*** v. 㺠º ºxº \º § ä ， , ;---- *** *** ëſ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡№ §§§ſſº∞ ѧ§§ ¿№ 5* …，~~ · º Ō ș. J. &. J.D. ſ. Jºy ſº ſº ſº º sº sº J. J. . .3, sº Nº. . . . º. º. sº [3 × == † ĒĒĒĒTĪTĪTĪĪĪĪĪĪĪĪĪĪĪĪĪĪİIIIIIIIIIIIIIIIIIIIIIIIIIIIĒźğ;№ſį įſiliſtùIIIIIIII # |His S 5 le|- C O N T A. I N I N G . . * O B S E R v A T I O N s º ** * . . . of THE º NORTHERN CIRCUMPOLAR REGION ; - roarrarº w IT # , * 3. **** >''< *. so ME Accou Nºt of THE INSTRUMENT wi TH w HIcH THEY WE A N D. "A N E W S E T OF T A B L E S, BY WHICH THEY WERE REDUCED TO THE MEAN POSITION FOR THE BEGINNING OF J A N UARY I 8oo. To W H I C H A R E A D DE D, * A FEW OTHER PAPERS AND PRECEPTS, * * WHICH IT WAS IMAGINED MIGHT BE AccEPTABLE TO THE PRACTICAL ASTRONOMER, By F R A N C I S W O L L A S T ON, F. R. S. Es T QU o D A M P R o DIRE T E N U S S I No N D A TU R U L T R A. &ºt * L. O N ID O N : Printed by Luke Hanſard, Great Turnſfile, Lincoln’s-Inn Fields, AND SOLD BY G. WIL, KIE, N° 57, PA TER - N O S T E R - R OW ; A N D * D, BRE MNE R, IN THE S T R A N D. *sº I 8oo, §[CN COLLEGE). LI B R.A. RY. * …? -º-º: *= - - - - - - ------------ºs got p ºr Green ºf YHR PREs, DENT AND GOVERNOR6 193 ). QEntered at $tationetà iſ)äli, º $exº~e. \ 2 - –4 l 3 *, . . .” ** 44 Iss G O N T E N T S. ; * #. C ***, * ". * * PAGE ãº.º. The Origin and Deſign of the Work : An Examination of the ׺ Northern Circumpolar Region by Meridian Obſervations: Together with the Latitude and Longitude of the Station where they were made - - - 1 * - is e ve tº CHAP. II. The Obſervations of each Star claſſed together: With an Account of ſuch Particulars as are known to the Author concerning it - - - - 7 **. III. A Catalogue of ſuch Stars as have been obſerved : Brought up to § the Beginning of January 1800, and claſſed in ſmall Zones - - - - - 233 Sº s §CHAP: IV. Remarks on the preceding Catalogue: With an Account of a Set § of Maps which have been engraved from it - - - - - - - - - 245 Q char. V. On the Tranſit-Circle with which the Obſervations were made - - 249 P A R T II. CHAP. VI. On a Portable Azimuth Altitude and Tranſit-Circle; with ſome Inſtrućtions concerning it - - - - - - - - - - - - - - - 3 CHAP. VII. On ſome peculiar Advantages of an Azimuth Altitude and Tranſit-Circle - - - - - - - - - - - - - - - - - - Io *, A P P E N D I X. § PART I. Containing Tables, &c. by which the Obſervations were reduced - 21 PART II. containing fundry Inſtrućtions and Tables, which the Author appre- hends may be found of Uſe to thoſe who feel themſelves to ſtand in need of them -- - - - - - - - - - - - - - - - - - - - $9 c H A P T E R I. *I HE ORIGIN AND DESIGN OF THE WORK: AN EXAMINATION OF THE NORTHERN CIRCU MPOLAR REGION BY MERIDIAN obSERVATIONS: TOGETHER WITH THE LATITUDE AND L O N G ITU D E O F T H E S T AT I O N W H E R E T H EY WERE M A DE. IN a General Aſtronomical Catalogue, publiſhed in the year 1789, a propoſal was made, that Aſtronomers of all nations ſhould concur in ſome regular method of obſerving the heavens; each taking ſuch a portion as might ſuit him beſt, and communicating the reſult of his obſervations to one common ſtock. The Author had thrown out a hint of that nature in a paper read at the Royal Society in 1784: and ſoon after the publication of his General Catalogue, he laid down all the ſtars it contains which are viſible in England, on the ſcale propoſed in the Advertiſement at the end of his Catalogues, of which a Plate is there given. This he did, with the deſign of ſelecting a certain diſtrict for himſelf; which he then intended to ſweep with a night Teleſcope, preparatory to the obſerving of the Right Aſcenſion and Polar Diſtance of each ſtar in it, with the Syſtem of Wires recommended in another paper communicated to the Royal Society in 1786. But in this he proceeded a very little way. For, having in the year 1787, conceived the idea of an Inſtrument, which promiſed to be far more uſeful than any which had come to his knowledge; and having mentioned it to Mr. Ramſden in the beginning of the year 1788, in the hope that his fertile genius would ſoon improve upon the hint ; an expectation had been entertained that ſome great change would be made in MERIDIAN INSTRU- MENTs ; whereby they might aſcertain at the ſame time, and with very ſmall additional trouble, the Zenith Diſtance as perfectly as the R. Aſcen- fion of every object to which the aſtronomer ſhould raiſe his teleſcope. B In 2. origin and Deſign of the Work, [CHAP. I. In the expectation of ſeeing that undertaken and brought to perfection by others, the propoſer was diſappointed. But he was not diſheartened. He knew well the Principle upon which ſuch an inſtrument ought to be conſtrućted; and accordingly gave directions for one in the Spring of the year 1791, ſuch as he had formed in his mind; and then waited for its completion before he ſat down in earneſt to take a ſhare in the propoſal he had himſelf thrown out in the Preface to his General Catalogues. The Inſtrument was delivered to him November 5, 1792; a full deſcrip- tion of which was read’d at the Royal Society in May 1793. From the time he determined upon having it, he thought it right to alter his diſtrićt; and reſolved to undertake the leaſt known, but moſt difficult portion of the heavens, and the greateſt trial of an inſtrument; the Circumpolar Region : the reſult of which obſervations is here laid before the Public. In the courſe of them, ſome difficulties had ariſen early, which have been mentioned in the deſcription publiſhed in the Philoſophical Tranſačtions for 1793. Some others have occurred ſince; the inveſtigation of which has occaſioned a great deal of trouble to the author: but the obſervations. themſelves as here ſtated, will ſerve to ſhew the general merit or demerit of his Inſtrument, and at the ſame time fully prove the great advantage of a TRANSIT CIRCLE in Aſtronomy. The objećt propoſed was, to aſcertain the mean RA and PD of every ſtar that could with convenience be obſerved above and below the North Pole. This ſoon determined itſelf, both as to the extent to which it ſhould be carried, and the ſize of the ſtars. The Top Plate of the Inſtrument pre- vented the going much nearer to the Zenith than 25 degrees of Polar diſtance, when the face of the Circle was turned towards the Eaſt, which it was certainly deſirable ſhould at times be done; and 25 deg. below the Pole, was full as low as one ſhould wiſh to go, on account of the variable- neſs of refračtion. This ſettled the Range that ſhould be undertaken. The Size of the ſtars which ſhould be obſerved was determined by neceſſity. The eye of an old man, turned of threeſcore before he engaged in the work, obliged him, with a Teleſcope magnifying about 40 times, to confine. *imſelf to ſtars, not in general below the 7th magnitude. . , ºf © The Char, I.] Origin and Deſign of the Hork. 3 The method of obſervation was this. The motion of ſtars near the Pole was ſoon found much too ſlow for an an obſerver to loſe his time in waiting for their paſſage over the 5 perpendicular wires in the Teleſcope. Indeed, after a little practice, it was perceived that a ſufficiently accurate obſervation could be made by uſing only the Meridian Wire; at leaſt to all within. 10' of the Pole. The other wires were therefore only attended to, when time happened to admit of it; as a cheque upon the others, and for the completing of an obſervation which might at any ſubſequent time prove incomplete. - - -- The Tranſit Clock being kept to ſidereal time, and going very regularly, there was really no great occaſion for examining it each night ; but there were very few evenings indeed in which that was not done. It was an aſſurance of the rate of the Clock, and of the Tranſit Circle itſelf remaining truly in the meridian before its ſteadineſs was known. The error of the clock on each evening, being applied with a contrary ſign to the obſerved tranſit of a ſtar, was conſidered as giving the apparent RA of that ſtar at that inſtant. Thoſe are the numbers ſet down in the obſervations contained in the next Chapter. Each ſtar, as ſoon as ever it had paſſed the Meridian Wire, was carefully biſe&ted or covered by the middle horizontal one, and afterwards as carefully read'd off with both the Microſcopes. One of theſe giving the Zenith Diſtances, and the other the Altitudes, the ſum of thoſe two readings ought to make exačtly 90 degrees. I will not affirm that to have been always the caſe, though it was ſo very frequently. Where it was not, the difference was halved, and the mean ſet down for the truth; unleſs it was in any part where an error was ſuſpected or known to exiſt in the diviſions on the circle itſelf, or in the ſetting of either microſcope, which then was applied accordingly. Theſe are not ſet down in the following liſts of the Obſervations, as they appeared on theſe readings. For the error of the Inſtrument in collimation has been applied to each ; in order to ſave trouble to thoſe gentlemen who may chooſe to compare the obſervations with each other, or to examine the Catalogue deduced from them. B 2 - To 4. Origin and Deſign of the Woré, towar. I. To publiſh the whole ſeries of the Obſervations themſelves might have been eſteemed an unneceſſary parade in a private man. It would have ſwelled the book to a larger ſize, and called for a greater expenſe, without anſwering any adequate purpoſe. The method here purſued, of claſſing together the apparent R. Aſcenſions and Z. Diſtances of each ſtar, as they were deduced from the obſervation of ſeveral nights; following each with the ſtate of the Barometer and the Thermometer at the time, and the magnitude of the ſtar as it was judged during its paſſage through the field of the Teleſcope, it was imagined, would be much more acceptable to the Aſtronomer. For though another column has been added of the apparent Polar diſtance of each, as deduced from that obſervation ; yet, with the Data here given on which that was founded, every one may examine the truth of the dedućtion. And indeed, in the Lower Meridian, there may be reaſon to ſuſpect that the Refračtions uſed, have not been quite ſuitable to the place. Though ſeated on the top of a hill, about 300 feet above the level of the Thames, the Obſervatory at the Parſonage at Chiſlehurſt is quite on the ground, with the axis of the Teleſcope but about 6 feet from it, and very little fall of the earth either way. Whether trees which inter- cept the horizon, both to the North and South, may have any influence upon the Refračtions, I will not pretend to ſay ; but I have a ſuſpicion, that when obječts are low, Dr. Bradley’s Table ſcarcely gives quite enough for my fituation. Yet I have not been able, or found time or inclination to aſcertain it. In the following account of the Obſervations, each ſtar is placed nearly in the order of RA as it paſſes the Meridian above or below the Pole; with a little hiſtory annexed to thoſe obſervations which I have made of it. If it is one in Hevelius's Catalogue, its mean RA and PD, as given by him for 1661, are ſet down on the left hand page, together with his deſcription of it, as ſtated in Flamſteed's Hiſtoria Coeleſtis, Vol. III. Where it has been obſerved by Flamſteed, the mean RA and PD are ſet down likewiſe, as they ſtand both in the edition of the Britiſh Catalogue, publiſhed by Dr. Halley in 1712, and in that of Flamſteed himſelf of 1725; though the name and number of the ſtar is ferupulouſly retained as it ſtands in the edition of 1725. To theſe are likewiſe added, a reference to the dates of thoſe ob- ſervations of Flamſteed, from which his Catalogue was formed. Theſe reſearches have not been made without trouble; but ſome curious parti- • * culars • , , ..CHAP, I.] Latitude and Longitude of the Station. - 5 culars diſcovered by them, have ſerved to repay the pains they coſt. Where it is a ſtar which has been obſerved by Ptolemy, Ulugh Beigh, Tycho Brahe, or William Prince of Heſſe, the reſult of their obſervations has been noted down likewiſe. - - A great part of the obſervations which I have made myſelfare here omitted: becauſe about 500, which were made between Jan. 19, 1793, and June 25, 1794, were not to be truſted for RA, without taking a mean between thoſe made with the face of the circle Eaſt, and others with it turned towards the Weſt: the cauſe of which error gave me a great deal of trouble to diſcover, and loſt me a great deal of time. The Zenith Diſtances indeed were not ſo circumſtanced, being alike equally good throughout : yet I thought it unneceſſary to lay them before the reader. I have acquieſced in a difference of 2 or 3 ſeconds of a degree in the Altitudes ; and a few tenths of a ſecond in time in the R. Aſcenſions between one night and another; which I thought I might do. Some perſons may look for greater preciſion; and errors might have been gloſſed over, to make a Íhew of more exact correſpondence than is true : but I have choſen to ſtate facts, on which Aſtronomers may comment as they pleaſe. Thoſe really practiſed in obſervation themſelves will be moſt candid. That a judgment may be formed of the Polar Diſtances of the ſtars in the following Catalogue, it will be neceſſary to ſubjoin (what may not be known to every one) the Latitude of the Parſonage at Chiſlehurſt, where the obſervations were made; which I conſider as 51. 24. 33." North ; or perhaps more ſtrićtly 51. 24.' 33,"3. From a mean of obſervations in 1770 and 1771, with a 12-inch Quadrant made by Mr. Bird for the late Earl of Macclesfield, . // I deduced my Latitude to be as ſtated already - - - 5 1. 24. 33. From a mean of others in 1791, with the ſame Quadrant, on a ſtone pier in a new obſervatory then made, which ſtands 2 I feet North of the ſtone in the former obſerva- . tory, it turned out to be - - - - - - - - - 51. 24, 33,25. And from a mean of ſeveral, made afterwards with the . A f/ Tranſit Circle on the ſame new pier, the reſult was - - 51. 24, 33.35. 6 Latitude and Longitude of the Station. . . [CHAP. I, s The coincidence of theſe was beyond any expectation I could have formed. But from the whole I think I may with pretty good confidence ſtate it as 51.” 24, 33,"3 North. - - The Longitude is immaterial to this purpoſe: But fince it may prove of ſome conſequence in reſpect of other obſervations, it may be as well to ftate that too. - By a ſet of Triangles I had formed, from bearings taken in 1770, 1771, and 1772, and calculated from the diſtance of St. Paul's and of the Monument from the Royal Obſervatory (given to me by the preſent Aſtronomer Royal, as deduced by Dr. Bradley from a Baſe he had meaſured - in order to transfer his obſervations at Wanſtead to the Royal Obſervatory at Greenwich) my Longitude from the Royal Obſervatory // was ſettled as - - - - - - - - - - in time - 18,5. Eaſt By ſome Rockets ſent up at Loam Pit Hill, June 24, 1775 A / . it ſeemed to be - - - - - - - - - - - - - I 9,02. By Maj. Gen. Roy's Triangles - - - - - - - 18,6. This laſt proved a great confirmation of my original calculations, and of Dr. Bradley's Baſe on which they had been formed. - - C H A P T E R II. THE OBSERVATIONs of E Aeh star class E D to GETHER, WITH AN ACC OUNT OF SUCH PARTICULARs as ARE KNOWN TO THE AUTHOR CONCERNING IT. P. HE method of arrangement here purſued, it was imagined would be more ſatisfactory to the inquiſitive Aſtronomer, than a confuſed ſeries of mere obſervations. At the ſame time, it would not only bring them together for more ready compariſon with each other; but would afford opportunity for placing in the ſame view what has been colle&ted concerning each Star from the obſervations of the antients. More, no doubt, might have been gleaned, had they been ſought. But theſe were not collected without ſome trouble: and theſe it was thought might ſuffice. The antient Catalogues having been examined by Flamſteed, and cor- rečted by him, as he tells us himſelf; the following particulars have been extracted from his Hiſtoria Coeleſtis, vol. 3. and not from the works of the authors themſelves. All that need be ſaid here concerning them, is the Date to which each of them originally belongs. Ptolemy's is ſuppoſed to be adapted to the year 137. But through a miſtake which he made in the Praeceſſion to be added to the Catalogue of Hipparchus to bring it up to that time (ſee Flamſteed's Prolegomena, p. 16) it is more nearly ſuited to the year of Chriſt 63. Ulugh $ 8 The Obſervations of ead ST A R claſſed together. [CHAP. II. Ulugh Beigh's is calculated for the year 841 of the Hejera. This really correſponds moſt nearly with the year 1437 of the Chriſtian aera ; and not 1463 as Flamſteed has ſtated it, forgetting the ambulatory nature of the Mohammedan year. * Tycho Brahe's Catalogue is expreſsly declared to belong to the year 1600 compleat, or the beginning of 1661. \ And that of William Prince of Heſſe to 1593 or 1594. In order to form ſomé compariſon between theſe Extracts and the Ob- ſervations of Hevelius in Flamſteed, it was neceſſary that the Longitudes and Latitudes of the latter ſhould be ſet down likewiſe. Thoſe of Hevelius were adapted by him to the end of the year 1660; and Flamſteed's to the beginning of I 690. They have been inſerted in the following Liſt, where- ever occaſion called for it. All the Longitudes are brought up to the beginning of the year 1800, by the addition of ſuch quantities taken out of Dr. Maſkelyne's General Tables (Nº XL.) as correſpond with their reſpective dates, or diſtances from that epoch. It is not pretended that any of them have been calculated afreſh from the obſervations. The additions have been, Q / A/ To the Longitudes of Ptolemy - - - - - - 24, 16.47 Ulugh Beigh - - - - 5. 4, 35 Tycho Brahē - - - - 2.46. 58 William Prince of Heſſe - 2. sa. 5o Hevelius - - - - - 1. 56. 36 Flamſteed - - - - - I. 32. 16. t References are likewiſe made to Dr. Herſchel's Catalogues of Double Stars; where, from his account, I apprehend that they occur in this diſtrićt. But no Particulars are here ſtated concerning them. For having been cen- 2. ſured CHAP. II.] The obſervation, of each STAR claſſed together. 9 .*.*.* * * . . * fured by him for the manner in which they were inſerted in my General Catalogue; where I could not give the deſcriptions in his own words, but inſerted them to the beſt of my apprehenſion in ſuch a way as the ſpace afforded, referring each of them (as I did in my Preface, p. xii.) to his own more accurate account; practical Aſtronomers muſt excuſe me for not being guilty of the like offenſe again. Io Particulars concerning each STAR, deduced from other Authors, [Char, II. —º. * ºf w -º-, -u º: * =-r-z: º-ºº: * &T =Tº •º. zº. rº-s * Yº * * * *-*--—-º- *—. -º- x —smºs-- *-*- -º-º: DRACONIS HEVELII 4. vel CAMELOPARDALI HEVELII 31. R. A. In Time. P. D. Mag. } © 4 // h / // Q / // Drac. Hev. 4. 178.54. I 5 II. 55-37 Io.29. Io 5 || Sup. Caud. ſeq. Bor. Cam. Hev, 31, 178.54.41 II. 55,39 Io. 29.2O 5 || Ad Caput, t Theſe, brought up to Jan. o. 1800, are, R. A. 12° 2'50". P. D. 11° 15' 41". 52 5 I This Star ſeems not to have been obſerved by Flamſteed. º CHAP. II.] The Obſervations of each STA R claſſed together. I I ~-rºr →r- =r-rºr- —r-t—r—= T- - +–--- -wºrr-, THE Apparent Right Aſcenſions here ſet down, are ſuch as they turned out, after making Allowance for the Error of the Tranſit Clock at that Time. The Zenith Diſtances alſo, are ſuch as they appeared, from a Mean of the Readings by both the Microſcopes, correóted by the Error of the Inſtrument itſelf, but without any Allowance for Refraćtion. All the Obſervations were made with the Face of the Circle turned towards the Faſt ; excepting ſuch as are marked with a W. to denote its being to the Weſt. Such as are below the Pole, have the cuſtomary Mark S. P. or Sub. Polo. -*-*- –º- —w- DRACONIS HEVELII 4. vel CAMELOPARDALI HEVELII 31. l |R. A. obſerved, Z. Diſt. obs", Apparent Date of Of" or ... Bar. Ther. Polar Diſtance Mag. Obſervation. App R. A. | Appº Z. Diſt. deduced. h / // O Z // O / // Nov. 9. 1795 | 12. 2.27,6 49,49.30 30,02 45 II. I 5.23 6.7 || S. P. Oćt. 24. 1796 2, 202 I 49.37 29,8o 46 15.17 6.7 || S. P. Theſe Obſervations do not agree ; and I have no mere. When reduced to the mean Poſition for Jan. 1, at o” O’ o', or Jan. o. 1800, the Differences are much greater than ought to be ; viz. Me. Rp A. An. Var. Me. P. D. An. Var. Mag. h / // // O / // // | size Tang. Sec. The 1ſt - - 12. 2.46,5 : +3,co8 || 1 1. 16.44,4| +20,04 || 6.7 ||,981 5.015 5.1 cy 2d - - 36, I 23, I Date of Obſ. R. A. obſerved Z. Diſt. obs". Bar. Ther. Appº P.D. deda. Mag. h / // O A // © * A/ | Qćt. 25, 1795 | 12, 5.12.6 || 57.13.56 29,53| 53 18.39.58 6.7 | S. P. Nov. 3. 5. I 3 I 3.48 372 || 4 I 39.53 6.7 || S. P. Hence the mean Poſition for Jan. o. 1800, ſeems to be, Me, R. A. An. Var. Me. P. D. An. Var. Mag. h / // /* o A WA // Sine. Tang. Sec. ~ I 2. 5.3O, I + 2,982 I 8.40. I4. +2O,C4 6.7 || >947 2,95o 3, 124 I 2 Particulars concerning each STAR, deduced from other Authors, ſchar. II. * —w ~– ~~ --- * *-* *** ** .* .* ** wº-ºº: —r r º r -ºry ºx D R A C O N I S- H E V E L II 5. R. A. In Time. P. D. Mag. *~. o f // h A // © f £/ Drac. HeV. 5. 18o. 54.53 I2. 3.38 I 2.54.5 I 6 || Sup, pen. Caudae ſeq., Auſtr. This brought up to Jan. 18oo is, R. A. 12° 10' 24”. P. D. 13° 41' 15". This Star ſeems not to have been obſerved by Flamſteed. * CHAP. II.] The obſervatiºns of each STA R claſſed together. I 3 r— ſ Date of Obſ. R. A. obſerved. Z. Diſt. obs". Bar. | Ther.|App"P.D. ded".|Mag. h / // O / // O / . // Nov. 7. I795 12, 5.53 54.52-54 29,80 49 | 16. I 8.48 7 S. P. IC. 52 58 3O, IO. 42 53 7 S. P. - r Hence the mean Poſition for Jan. o. 18oo, ſeems to be, R. A. An. War. N. P. D. An. Var. Mag. h / // - // O / // // Sine. Tang. Sec. 12. 6. 9,6} +2,948 | 16.20.18.2 | +20,04 || 7 || 1959 || 3,412 3,556 D R A C O N IS H E V E L II 5. Date of Obſ. R. A. obſerved. Z. Diſt. obs". Bar. Ther Appº P.D. ded". ww. h / // o / // o / // Nov. 26. 1794. 12, 9.24 52.16.24 29,31 || 48 13.42. Io 6.7 || S. P. - - W. 27. - 24- 24. 257 || 4 I 12 6.7 || S. P. - - W. Nov. Io. 1795 26 44- sº 4-2 32 6 || S. P. t Hence the mean Poſition for Jan. O. 1800, ſeems to be, R. A. - An. Var. N. P. D. An. Var. Mag. h / // // ! o / 2. // *:A Sine. Tang. ' Sec. 12. 9,43,4| +3,261 I 3.43-42.59 +2O,O3 5-6 || ,971 4,092 || 4,213 Date of Obſ. R. A. obſerved. Z. Diſt, obs". Bar. T her App P. D. ded Mag. h / // o / // - - o f Z/ Oćt. II. 1794 | 12. 13.57,7| 39.44.44 29,34 54 I. Io. 4 || 7.6 || S. P. Nov. 9. I4. 6 48 27O 43 8,6 6.7 || S. P. 1 2. II 5O ,69 || 45 I 2 7 S. P. l Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. Am. Var. N. P. D. An. Var. Mag h a // // i o A // // | Sire Tang Sec º ! : ; \* * S • * * - w . I 2. I 5. 6,0 —o,867 I, I I-35,5 ~4-2O,O I 7 ,9998 Asºo 48,91 I4. Particulars concerning each STAR, deduced from other Authors. [Char, II, Žs -º- ~ --- zº——r- →r **- -ºr--ºr- -ºr-º- ^, 13, C A S S I o P E E. * R. A. In Time. P. D.; Mag. o , , h e // o / // Caſſ. 13. , 1712 3.32. 3O O. I4. Io 25. I 1.45 || 7 || I 3. I 725 3.32-3C O. I 4. IO 25. II.45 6 Obſerved by Flamſteed Oét. 11, 1693, and only that one time. This brought up to Jan. o. 18oo, is, R. A. o” 20' to",9. P. D. 24° 35' 5". Mag, 7.6. It is not in Hevelius’s Catalogue. The Obſervations of each STAR claſſed together, I 5 Date of Obſ. R. A. obſerved. Z. Diſt. obs". Bar. | Ther. App P.D. ded". Mag. - h / // O / // - O / // Nov. 25. 1794. 9. 14.18 27.29.56 29.30 5o 1 1. 5. 1.5 6.7 || W. Nov. 3, 1795| 22. 3o. 1 7 372 4. I .4.40 || 7.8 7. 27 : : I 5 | ,8o 49 42 7 Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. | An. Var. Mag. * h / // // o e // } // Sine. Tang. Sec. O. I4.3 I, I + 3,507 II. 3.24.9 - 20,0I 7 || 398 I 5, I I 7 | 5, 2 I 3 Date of Obſ. R. A. obſerved Z. Diſt. obsº. Bar. Ther Appº P.D. ded". Mag - h º A/ © / // © / // Nov. 9. 1794 o. 18. 8,2 l 24.28.24 29.70 || 43 | 1.4. 6.37 | 6.7 1 2. 7 27 ,6of 45 34 || 7 | 18. 6,5. 29,5 345 || 36 3 I 6 | * | Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. Am. Var. N. P. D. An, Var. Mag, ; h A WA // e Z // // || Sine. Tang. Sec. o. 18.20,8} +3,490 14. 5. 1,5 | – 19,97 6.7 || >97o 3,986 |4, 109 *— | Jſ 13. C A S S I O P E AE. p | | || Date of Obſ. R. A. obſerved. Z. Diſt, obs". Bar. Ther.|Appº P. D. ded". Mag. - h & // 0. A A/ O / // Nov. 3. 1795 o. 19.5o: 13.58.39 29,72 41 24-36.34 8 7. 5o 4O 38o 49 33 7.8 Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An. Var. Mag. h / f/ f/ O Z // // Sine. Tang. Sec. O. 20. 222 +3,324. 24.35. 16 - I 9,97 8 || 3909 || 2, 185 | 2,493 16 - Particulars concerning each STAR, deduced from other Authors, [CHAP. II. *— •rr, * – -*** 4. D R A C O N I S. This Star is not in Hevelius's Catalogue. R. A. In Time. P. D. | Mag. O * & h e / 2/ © / // 3 Drac. 1712 184. 5. O 12. 16.20 I9. 5. O 6 4. Drac. 1725 184. 3.3o 12. 16.14 19° 5' 5 6 - i Obſerved by Flamſteed Ap. 12, 1694. This brought up to Jan. o. 18oo, is, R. A. 12° 21' 23",3. P. D. 19° 41' 38”. Mag. 6. 12° 21' 17",3. 19° 41' 43". 6. R. A. In Time. P. D. Mag. o / // h / // O £ // | 16 Caſſ. 17 I 2 4. I 3. O o. 16.52 24.57.5 O 6 16 Caſſ. 1725 4, I 3. O o, 16.52 24.57.5O 6 | Obſerved by Flamſteed Oét. I 1, 1693. - This brought up to Jan. o. 1800, is, R. A. o' 22" 56",9. P. D. 24° 21' 13". Mag. 6. ‘CHAP. II.] The Obſervations of each STAR cliffºd together. 17 4. D R A ‘C O N I S. Date of Obſ. R. A. obſerved. Z. Diff. obs". Bar. Ther. Appº P.D. ded". Mag. H 7. // 6 º' // \ Q & // Nov. 24. 1794|12. 20.57,9| 58.13.33 29,3O || 48 || 19.39.37 6 S. P. Face W. 26. 57.25 4. I 242 || 44 46 6.5 || S. P. - - W. 27. 58 4235 º 4. I 47 6 S. P. - ... W. \\ Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An. Var. Mag. h A // /? o / // // Sine, Tang. Sec. 12. 21.15,5|| -- 2,724 | 19.41.19.8 + 19,96 || 5.6 || ,941 2,794 2,968 Date of Obſ. R. A. obſerved. Z. Diſt. obs". Bar. Ther. Appt P. D. ded". Mag. h A A/ O f // e - A // Nov. 8, 1795 o. 23.47.7 | 15.23. 4,5 29,94! 47 | 23.1.2. 6,5 || 7.8 * | Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. War. N. P. D. An. Var. Mag. * * h / // A/ © f ºf | /P Sine. Tang. Sec. / O. * +3,392 || 23. Io.34 - I 9,97 7.8 || 3919 || 2,333 2,538 *m-. * * i This therefore is not 16 Caſſiopeas. 18 Particulars concerning each STAR, deduced from other Authors, [CHAP. II, x- ~r— *-ºsmºs- =# ~5. , D R A C O N I S. * * Long. 18oo. Lat. | Mag. S o / / | S o z º. © W // , sº 3o Ptol. 3. I9. Io, o 4, 13.26.47 6 I. I 5. O 3 || Juxta Caudams- 3o Ul. Beg. 4. 8.37. O I 3. I 2.35 54. O 3 3o Tych. 4. Io.26. O 13. I 2.58 33. C. 3 || Penultima Caudae. go Pr. Heſſ. 4. IO. 24.3C I 3. I 7.2O 43.3 O’ 3 6 Hev. 4 • II. 23. I4. I 3. I 9.5 I 44-5C 3 || Penult. 4 Fl. I 712 4. II.5.1.58 I 3.24. I4. 43.4C 4 || Penult. 5 I 725 4- I. I. 5 I •4C 13.23.56 43. 2.O 3 || Juxta Caudams ! - * R. A. In Time. P. D. Mag. O f // h A // o A // t 6 Hev. I 84.4 I.35 12. 18.46 18. 18. 7 4. Fl. 1712 I 84. 57.30 I 2. I 9.5o 18.3O. O 5 I725 184, 56.2O I2. I 9.45 I8.30. 5 Obſerved by Flamſteed with the Sextant, - Dec. 27, 1681. with the Mural Arc, Ap. I 2, 1694. 5 Fl. 1725, brought up to Jan. o. 1800, is, R.A. 12° 24′ 41°. P. D. 19' 6' 40". Mag. 3. An. War. 2",661. - Zach makes the R. A. 1860, 12° 24′47",65. 6. D R A C C, N I S. R. A. In Time. P. D. O / // h / // O Z 7. 5 Dr. 1712 185.2 I.30 12. 21.26 18. I 5.45 6 Dr. 1725 I 85.20.2O I 2. 2 ſ. 2 I I8. I 5.55 Obſerved with the Sextant, - Dec. 27, 1681. with the Mural Arc, Ap. I 2, 1694. 6 FI. 1725, brought up to Jan. o. 18oo, is, R. A. 12° 26' 13",6, P. D. 18° 52° 28°. - **. * Char. II.] The obſervations of each S TAR cloſed together. º I 9 5. , D R A C O N I S. Date of Obſ. R. A. obſerved. Z. Diff. obs". Bar. Ther. App P.D.ded. Mag. | * * * o / // o z // Nov. 9. 1794 |12. 24.33,2| 57.38.59 29.70 || 43 | 19. 5. 2 3 || S. P. - 12. 3334 59 ,6o 45 | 2 || 4.3 || S. P. 18. 34. 39. 4. | ;45 || 36 7 4 || S. P. Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An. War. Mag. A 2 / WA o / // ºf Sine. Tang. Sec. 12. 24.5o,8 || --2,658 | 19. 6.16,9 | + 19,94 || 4-3 || ,945 * 3,055 i - 6. D R A C O N I S. Date of Obſ. R. A. obſerved. Z. Diff. obs'. Bar. Ther. App P.D. ded. Mag. - h , , o Z // • , a Nov. 26. 1794|12. 25.54 $7.24:51,5| 29,31 || 48 || 18.50,53,5 || 6 || S. P. Face W. 27. 5.325 52 257 41 54 6.5 || S. P. - - W. Hence the mean Poſition for Jan. o. 1800, ſeems to be, || { R. A. An. War. N. P. D. Am. Var. Mag. h / // •AA o y // // Sine, Tang. Sec. 12. 26.11.3| +2,627 | 18.52.27,8 | + 19,92 || 6 ||,946 2,925 3,091 $– Particulars concerning each STAR, deduced from other Authors. [CHA P, ff. . . º º, -urº- 2O. -- Caph. Hev. 42 Fl. 21. Caſſ. 1712 } 1725 21. C A S S I O P E F. R. A. o / / /* 6.27.42 6.39. o In Time. h A /* o. 25.51 o. 26.36 Obſerved by Flamſteed oã, 11 , 1693. Fl. 1725, brought up to 1800, is, R. A. oº 33' 18". P. D. 16' 6' 54". FI. 23. Caſſ. 1712 23. I 725 R. A. O A. Af 7. II.4O 7. II.39 23. In Time. h a Z/ o. 28.47 28.46 P. D. o /* // 16.58.53 16.43.20 P. D. o / // 16.51.49 16.51.40 | 6 || Inter ped, ſin. et ſeabellum Caſſiopezºs. 6. C A S S I O P E AE. Mag. 6 6 Obſerved by Flamſteed Oét. 11, 1693. R. A. doubtful. Fl. 1725, brought up to 1800, is, R. A. o' 35' 32". P. D. 16° 1 5' 17". Char, III > The Obſervations of each STA R elaſſed together. * -*. -ms- m-r- z Date of Obſ. Nov. 9. I794 I 2. Dec. 23, 1795 R. A. obſerved. 2. c Ass I o P E E. Z. Diſt. obs". Bar. Ther.|Appº P.D. ded". Mag. fi / // . | O A // O / // o. 32.26,2 22.27. Io,5 29,70 43 | 16. 7.53 6 25,4 IO ,6o 45 53 6 27, 3 32,5 . ,83 || 46 28 || 6 | | Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. War. N. P. D. An. Var. Mag. H / // // o / // - //- # Síne. Tang. Sec, o, 32.41,3} + 3,718 || 16. 6.19,7 | – 19,85 6 º 3,463 3,605 } ſ 23. C A S S I O P E JE. Date of obſ, R.A. obſerved z. Dit, obº. Bar. Ther. App P.D.ded. Magi - h / // O / // - Q & // Nov. 12. 1794. o. 34.24 22.18.42,5 29,60 45 | 16.16.20,5 | 6 Dec. 23. 1795 34-2533 I9. I I 583 45 15.53 | 6 Hence the mean Poſition for Jan. o. 1,800, ſeems to be, R. A. An...War. N. P. D. An. Var. Mag h / // // o / // // Sine. i Tang. Sec. O. 34.40 | +3,739 || 16.14.45 - 19.82 | 6 || >96o | 3,431 3,574 == 42 Particulars toncerning each STAR, deduced from other Authors. [Char. If: º *—4- -* *- c o M E S P o L A R I s. Not in Hevelius; nor in the Britiſh Catalogue of 1725. R. A. Im Time. , P. D, Mag, - • 2 // h A // . o & /* Fl. I. Urſ. Min. 1712 5.15. OF. o. 2 I. o 2.39.39 7 || Paul. Post contigº. Obſerved by Flamſteed Dec. 9, 1689, above and below the Pole. Dec. 3, 1690, above and below. 11, - - - above. * I 2, - - - above. Sept. 19, 1693, above. Yet it is not in the Catalogue of 1725. That of 1712, brought up to 1800, is, R.A. o' 35' 58%. P. D. 2°2'45". 7. D R A C O N I S. R. A. In Time. P. D. Mag. O , ſº 2. h / // | o / // Fl. 183. Urſ. Maj. 1712, 188.35. o 12. 34.20 21.30. Io || 6 7 Drac. 1725] 188.37.29 || 12. 34.29 21.30-30 | 6 Obſerved by Flamſteed Ap. 12, 19, 27, 1694. Theſe brought up to 1800 are, R. A. 12° 38'59". P. D. 22' 6' 27”. I 2% 39' 8’’. 22° 6/ 47". CHAP. II.] The Obſervations of each STA R claſſed together, 23 --~ C O M E S P O L A R I S. Date of obſ. R. A. obſerved Z. Diff. obs'. Bar. Ther. App. P.D.ded. Mag| - - h / // ... O / // i O / // Nov. 9. 1794 o. 35.47,2| 36.29.49 29,70 43 2. 4.56 7 - 26. 44 495.5 242 || 44 55 || 7 || W. - 27. 42 48,5 | >57 41 55 || 7 || W. Dec. 1. 4.222 47 247 | 38. 57 || 7 W. Nov. 3, 1795 | 5O 3O. I >72 || 4 I 43 || 7.8 E. 7. 49 29.56 ,89 || 49 49 || 7.8 8. 48," 3O. I 394 47 43 7.8 IO. tº sm sº 2 30, iO || 4-2 41 7.8 || I I. 53: 5 || 2 , I 3? 44 42 7.8 14. 54. 5 29,67| 42 4O || 7 || I 5. *: 5724. 5 999 || 38 38. 7.8 Hence the mean Poſition for Jan. o. 1800, ſeems to be, | R. A. An. Var. N. P. D. An. Var. Mag. h , ºr //. o / // z/ Sine. Tang. Sec. o. 36. 6,3| +8,886 2. 3.25.4 - I 9,8o 8.7 || ,999 || 27,837| 27,855 7. D R A C O N I S. Date of Obſ, R. A. obſerved. Z. Diff. obs". Bar. Ther. Appº P. D. deda. Mag. | - -- - h / // O A // O / // Nov. 14. 1795|12. 39, 6 || 60.39.33 29,79 || 38 22. 5.49 || 6 S. P. I 5. | - - - - 34. 399 || 38 53 6 S. P. Dec. 23. 8,3 49 ,83 45 6. 2 6 : S. P. May. 16. 1796 Io,2 | 16.29.53 568 49 5. 7 6 Face W. ^ - I 9. I. I 53 >53 || 58 17 6 - – W. Hence the mean Poſition for Jan. O. I Soo, feems to be, R. A. An. Var. N. P. D. An. Var. Mag. h A // // O / // A/ Sine. Tang. Sec. 12. 39.18,4| + 2,509 22. 6.47.7 + 19.76 || 6 || ,926 2,461 2,657 24 Particulars concerning each STAR, deduced from othérº Authors. Ic HAP, II, C E P H E I H E V E L II 43. - Ceph. Hev. 43. \ Fl. 2. Urſ. Min. 1712 <5t. uare—Whether theſe mean to be the ſame Star or not. 6 A Af 7.25. O In Time. h *z aſ o. 30.37 In Time. h sy ºf O. 29.4O P. D. o y jºy 5.33.49 P. D. o , ºf ./A 5.24. 5 Obſerved by Flamſteed Sept. 19, Dec. 5, 19, 1693. It is not in the Brit. Cat. of 1725. * That of Hevelius brought up to 1800 is, R. A. o' 43’ 6”. - - o° 40′ 53°. Flamſteed's |Mag, | In fimbriá tunicae trium ſequentium - inferior. * 6 Quae ſupra Polarém. *~, &mº P. D. 4° 47' 47". - 4° 47'59". * —a- - Chap. II.] the Obſervations of each STAR clºſed together. t 25 *A C E P H E I H E V E L II 43. Date of Obſ. R.A. obſerved. Z. Diff. obs". Bar. Ther. App. P.D. de: Mag| h / A/ o / // o f Z/ Nov. 9. 1794 o. 43.30.2 || 33.43.58,5| 29.70 || 43 4.50.5o,5 5 I 2. | 3O,O 44. I ,6o 45 º 47 5 | | Hence the mean Poſition for Jan.o. 1800, ſeems to be, | R. A. | An. Var. | N. P. D. An. Var. Mag. w | h a Z/ // • , , , // Sine. Tang. Sec. . . o. 43.36,7| +6,066 4.49. I 5, I - 19,69 5 || >996 | º 11,899 l f - mºr |. * --------- l | mº" Date of Obſ. IR. A. obſerved Z. Diſt. obs". | Bar. Ther Appº P.D. dedē. | Mag, - - h ºf A/ O / // { o / // - Nov. 8, 1795 o. 44, 9,7| 28. 1.12 || 29,94 47 | 10.33.44 || 7.8 3. 24- IO | - 2O 28,74 || 44 | 38 7.8 || Face W. | - - }. Hence the mean Poſition for Jan. c. 1800, ſeems to be, R. A. An. War. N. P. D. An. Var. Mag, | h > // A/ • , z, // Sine. Tang. Sec. | o. 44.24,2| +4,438 Io. 32.29 – 19,63 7.8 º 5,374 5,466 -yºur Date of obſ, R.A. obſerved z. Diº, obº. Bar. Therlapp P.D. ded: Migj h , , O / // O / // Nov. 26, 1794 o. 45.37,5| - - - || 29,42 || 47 | - - - || 7.6 || Face W. - 27. } - - - 34.37.35 357 || 4 || || 3.57. I 2 7 – – W. , Dec. I. 353.7 37 47 | 38 I O 6 – – W. 3. - - - 36,5 . . .40 || 48 If I 7 || - - W. | Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An. Var. Mag. h 2 // A/ . O A A/ Aa' º | Sine, F Tang. Sec. * # O. 45,5735 +6,941 || 3:55.42.4 | - 19,65 6.7 sºlº E. 26 Particulars of each STAR, deduced from other Authors. TCHAP. If. ~& *— * * - º --~ - ºr 8. D R A C O N I S. R. A. In Time. P. D. Mag. O A // h A // | o & Aſ $ 187 Urſae 1712 I 90.37. O I 2, 42.28 22.52.25 6 8 Drac. 1725 I 99.40.2O || 12. 42.49 22.52. I9 6 & Obſerved by Flamſteed Ap. 12. 19. 1694. Theſe brought up to 1800 are, R. A. 12° 46' 51". P. D. 23° 28′ 43”. * 12° 47' 12". 23° 28′ 28”. wº- < —r— .* r— CA ME LO PA R D A L I H E V E L II 32. Double. R. A. InTime. P. D. Mag, O K // h / // O / // Cam. Hev. 32. 192. 9.54 I2. 48.4O 4,45.30 5 || In cervice ſeu dextra aure. Not in Flamſteed's Catalogue. This brought up to 1800 is, R. A. 12° 48' 54%. P. D. 5°30' 55". This is one of Dr. Herſchel's double Stars, IV. i 5. *...*. s CHAP. II.] The Obſervations of each STAR claſſed together. 27. 8. D R A C o N I S. * Date of Obſ. | R. A. obſerved. Z. Diſt. obs”. Bar. Ther'App"P.D.ded". Magºl h A // 6 A' A'A *** o A // Nov. 3. 1795 |12, 47.14 62. o.43 29,72 || 41 || 23.27. 6 6 S. P. 7. g I435 48 ,8o 49 6 S. P. Fº l Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. War. N. P. D. An. Var. Mag. h, ſº // // . . . * // Sine. Tang. Sec. 12. 47.28,6 | +2,441 || 23.28.28,2 | + 19,63 6 || >917 | 2,3Oo 2,509. CA. M. E L O PA R D A L I H E V E L II 32. Double- F I R S T S T A R. Date of obſ, IR. A. obſerved! z. Diff. obs'. Bar. Therlapp P.D.ded". Mag. h / // o A // o Z // May 7, 1793.12. 47.44 || - - - || 29,89 |42 | - - - || 7 || Face W. I3. 46,8 || 33. 7.41 ,68 53 5.27- 9 || 7 || - - E. I4. 4732 Nov. 15. 1795 32,4|44. 3. 435 | >99 || 38 28.35 || 7 || S. P. 28. 31, 5 7 25o 36 k 37 || 7 || S. P. Dec. 23. 3723 | tºp ſ H * * l S F, C O N D S T A R, h / / / o z // Bar. Ther. • * * Mag. May 7. 1793.12. 47.52,5 33. 7.20,5 29,8o 42 5.27.29 6 || Face W. I 3. 55,8 2O ;68 || 53 3O 6 - - E. I4. 56,2 2O 287 47 3O Nov. I 5, 1795 4224. h N. * 28. 4 Ix2 || 44, 3-27 ,5o 36 28.57 6 S. P. Dec. 23. 46,8 35 583 45 29, 3 6.5 || S. P. The R.A. in the Three firſt Obſervations of each of theſe Stars, is not to be depended upon, - excepting as a compariſon between the Stars, or by taking a mean between thoſe with the Face *E. and W. for the reaſon which will be explained in Chap. W. But they are here ſet down, ſince they may have their uſe ; though almoſt all the Obſervations made before June 25, 1794, have been laid aſide. The Iſt - 2d - R, A. h / //- I 2. 47,453.2 I 2, 47.5437 +o, 190 A/ & N. P. O / 5.29.50,4 5.3O. D. // 959 An. Var. // + 1 9,62 E. r). -aš3 Hence the mean Poſitions for Jan. o. 1800, ſeem to be, An. War. Mag' 7 . 6 ... Sec. Io,438 Sine. Tang. 2995 |º * *E*. 2.8 Particulars eoneerning each STAR, deduced from other Authors. \ ~–º. re-r-z ** *s-, --~~~-s=Ex- *f; v-x-w -E 3. º *Y- 9. D R A C O N I S. R. A. In Time. P. D, Mag. to f */ h / /* o / // 9 Drac. 1725 I9 I. 57.2O I 2, 47.49 2 I, 43.4O 6 It is not in the Edition of 1712. Obſerved by Flamſteed Ap. 12. 19. 1694. wº This brought up to 18oo is, R. A. 12° 52' 9". P. D. 22°19'33". CHAP. II.]: The Obſervations of each S T A R thaſed together. * 29 ºr- - *—i-ºº-----i-º-º: --- *— acº-º: T- * Date of Obſ. R. A. obſerved. Z. Diſt. obs". Bar. |Ther|App P.D.ded". Mag| * h / // O * // O / // i>ec. 30, 1795 |12. 49. 3.2 6o. 13.22 29,93 || 41 || 2 I-39.37 - 7 S. P. | |- Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. || An. Var. Mag. h . / /? A/ o ºf // // Sinc. 12. 49, 14 |- + 2,368 21.40.43,4 || -- 19,61 7 || 929 2,516 2,797 Tang. Sec. t |. 9. D R A C C N I S. Date of Obſ. R. A. obſerved. Z. Diff. obs'. Bar. Ther.App. P.D. ded. Mag| a h A // O / ,” O f // Dec. 30, 1795 |12. 52, 7,3| 60.52. 8,5| 29,93 41 22.18.28 6 || S. P. May 19, 1796 Io,7 | 16. 18.5o,5 >53 58 I7.4O 6 || Face W. º Two Obſervations do not agree; and I do not ſee any reaſon to prefer the one to the Other, The mean Poſition for Jan. o. 1800, is, R. A. An. War. N. P. D. An. Var. Mag. B h 2 ” */ 9 / / / // Sine. [.. Tang. Sec. y the 1ſt - -|12. 52.18,3 22. I 9.343 I is * 2,435 | 2,632 2d - - I9,8 + 2,334 18.56, I + I 9:53 6 || ,925 2,436 2,633 3G> Particulars. concerning each S T A R, deduced from other Authors, [CHAP. II. *— -º- —l- 2^ P O L A R I S., Long. 18oo. Lat. Mag. o ºf // S O / // O A // ! T Ptol. f 2. o. Io, o 2. 24.26.47 º 66. O. o 3 || In extremitate Cauda. TJl. Beg. 2. 20. I9. O 2. 25.23.35 66.27. O Polaris. 1 Tych. 2. 23. 2.3O 2. 25.49.28 66. 2. O 2 || Polaris. Pr. H. 2. 22.48. Io 2. 25.41. O 66. I. 15. 2 T2 Hev. 2. 23.51.22 2, 25.47.59 66. 3. O 2 || Polaris. 3 Fl. 1712. 2. 24, 14.41 2... 25.46.57 66. 4, 1 I 2 1 Fl. 1725. i, 2. 24. 14.43 2, 25.46.59 66. 4. Io 3 - . d d II. R. A. In Time. I P. D. |Mag. N ---, ** o & // h f // to / // rz Hey. Urſ Min. 7.22.8 O. 29.29 2.3O.3O 2 3 Fl. 1712 8. I 5. O O. 33. O 2.2 I.2O 2 : 3. 1725 | 8, 17.3O O. 33. IO 2.2.1.20 3 |- z | º Obſerved by Flamſteed with the Sextant 44 Times, between Jan. 26 and May 27, 1682:. with the Mural Arc 104 Times, between Sept. 18, 1689, and Dec. 18, 1699, | R. A. P. D. Flamſteed 1725, brought up to Jan. o. 18Oo, according to • z z. 6 / // his own Calculation, is, - - - - - - - - s º O. 5 I.2523 | 1.45, 6,8. As obſerved by La Caille (fr. Conn. 1788) - - - - - o.52. I 5,4 | 1.45.36,6 by Maſkelyne (fr. L. Lande) -- - - - - O-52. 2333 St. D° given by himſelf to Gen. Roy - - - - || - - - - 1,45.34,65. by Brinkley -- - - - - - - - - o.52.24,6 * &’ l t As Dr. Maſkelyne has not given us any reſult from his Obſervations of this Star in R. A. :- nor has Dr. Hornſby given us any reſult from Dr. Bradley's, either in R. A. or P. D.; I have not preſumed to ſelect from either of them ; but leave it to Aſtronomers to do that for. themſelves. . y \ *CHAP. II.] The Obſervations of each STA R claſſed together. S. P O L A R I S. Date of Obſ. | R. A. obſerved. Z, Diſt. obsd. Bar. Ther Appº P.D. deg|Mag. h / ?/ o / // 3 Z // IXec. I I. 1792. O. 51.28,3| 36.47. 8 29,55 | 40 | 1.47.35,4| 2 I 5. 29,5 825 | 35o 43 35 2 I . 2733 5 355 || 36 38 *. 22. 25 7 28,75 39 37,6 23. 23,3 7 29, 20 | 29 | 35,8 27. 22,6 8,8 22 O 32 33,8 3O. 737 6 37 36 35 Jan. 6. 1793 I 32.2 8,5 ,8o 34 34. *- - - Face Vºſ. 8. - 6,4 9 265 | 38 33 - || - - - - E. June 27, 1794 o. 51.29,7| 40.22.38: 30,00 | 66 I,47.59 2 S. P. Face W. 28. 3 I 39 34,5 | >O3 | 69 | 56 || 2 || S P. - - E. 29. 29,6 26 29,89 64 47 2 S. P. Nov. 1-2. 52. I | 36.47.44 360 45 46.59 2. 24- 52. O 34 - || 235 | 48 55 : | 2 || - - - - W. 25. 5 : . 572.7 38 ,27 | 46 59 2. - - - - W. 27. 53 4. I > 57 || 4 | 47. 3 || – || - - - - W. Dec. 3. 5o,6 38 24O || 48 4. 2 - - - - W. | Ju 2. 1795. o. 51.16,7 | 40.22.16 238 56 36 2 S. P. – W. 3- 18,4 I 2 245 58 35 * S P. - E. I3. 26 I 2 255 | 55 35 cº S. P. Aug. 17. 52. 8,O 5 * ,22 | 66 27 º S. P. 3 I. I O 2 ,88 7o 23 Gº S. P. Sept. 2. 9 2 I.58 353 | 68 I 8 º S. P. Nov. 7. 6 36.47.52 ,89 || 49 46.53 2 8. 557 48 394 || 4-7 57 8. | 2 I : ; 49.2 I-35 | 30,00 || 44 57 tºy S. P. I O. 9 || 36.47.52 : , I O || 4-2 5O : I O. I I * * * * * - I sa * * *m. º S. P. I I. I I 54 5 i 3 || 44 49 23. 435 59 29,40 || 42 45 2. - - Face W. 24. 3 5795 28,74 || 44 46.5 | - - - - - W. May 17. 1796|o. 51. 4,8 4O.2 I-5 I 29,8o 54 47. I 3 2. S. P. - - W. 18. º 6,3 || - - - || - - || - * * = º S P. - - W. Ju. 21. * * * 5O 244 || 58 I O º S. P. - - E. Nov. 12. 52. I7 : 36.48.17 53C 42 46.29 1 3- - - - || 40.2 I. 16 33 I 4C 29 º S. • 17. I5 || 36,48.16 28,91 || 39 29 3Oe I 3 18, 5 29,52 28 24. º - - - - W. * | | 32. Particulars concerning each STAR, deduced from other Authors, * [CHAP. II. *~Tºg xx; C E P H E I H E V E L I H 44. R. A. In Time. P. D. Mag. || o / // h ºf Z/ o -4. AA t Ceph. Hev. 44. # I. 18. I 9 O. 45. I 3 I2. 9.5o 6 || In tibia finiſtra ſuperior. *-*. This brought up to Jan. o. 1800, is, R. A. o° 55' 34",4. P. D. 11° 24′ 31”. Mag. 6. It ſeems not to have been obſerved by Flamſteed. Char, II.] rhe obſervations of each STAR claſſed together. 4- 33 m- —- --ºr- 3. *& Po LAR I s—continued. Date of obſ. (R.A. obſerved z Dil. ob." | Bar. Ther. App P.D. dei Mag. h / // \ 6 / // o / // Ju. 25. 1797 o' 51.39 40.21.21 | 29,65 63 | 1.46.55 | 2 || 3: P. Jul. 5. 44. 4.O ,22 || 62 4.7. O tº S. P. I 5. ºn tº *- 32 ,56 | 8o 46.5 I * S. P. Aug. 2 I. 52. 16 23 ,50 | 66 47 - S. P. 3O. 22 I 5 ,4O | 66' 35 º S. P. Face W. Sept. I. - - - 16 ,93 || 64. 38 &- S. P. - - E. Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. War. N. P. D. An. War. Mag h / // // 9 / // r By Obſ. 1792 o. 52.26, 1 || - - - I. 45-35, 2 I 793 25,2 - - - 35; I ! I794 28,6 - - - 36, I 1795 28,6 - - - 39 1796 27,5 - - - 36,9 *797 27,6 - - - 38,7 | º: 4 // Sine. Tang. Sec. Mean - - - O. 52.2733 + 12,957 1.45.36,7 | - I 9,52 2 || >999 32,593 32,599 * | Theſe turn out a few Seconds more in R. A. than thoſe from Maſkelyne or Brinkley ; as alſo 2” more in P. D.; but from what cauſe I know not. - All the Obſervations between Jan. 19, 1793, and June 24, 1794, are omitted ; though the mean reſults from the whole differ but o’,3 in R. A. and o', 1 in P. D. from thoſe here given. Tº C E P H E I H E V E L II 44. Date of Obſ. R. A. obſerved. Z. Diff. obs'. Bar. Ther.App. P.D.ded". Mag. h * // | O / // YC / // Nov. 7. 1795. o. 55.16 27, 9.52 29,8o 49 11.25. 5 6.7 I 5. I6,4 Io. 6 999 || 38 24.5o 6.7 * 24. I6 9.59 28,74 || 44 59 6.7 || W. | Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An. Var. Mag. h / // 7// O / // // Sine. Tang. Sec o. 55.31,2 +4.628 I 1.24.43.9 – 19,47 6.7 || ,98o 4,951 5,052 34. Particulars concerning each STAR, deduced from other Authors. Echáp. tr. * *** * * *- ** aſ r=-ºr- ** : * rººm 2. U R S AE M I N O. R. I S. R. A. In Time. P. D. Mag. © A // h /* // O / /* 2 Urſ. Min. 1725 9-39. 3O o. 38.38 3.26.30 6 This brought up to Jan. o. 1800, is, R. A. o° 52' 51",7. P. D. 2° 50' 27”,6. I doubt much concerning this Star; and can find no Obſervations of it in Flamſteed. It is not in the Edit. 1712. Indeed what Stars are near this place, are much too ſmall for Flamſteed's. inſtrument. Yet Dr. Herſchel (Phil. Tranſ. 1783, p. 254.) ſays this ought to be ſtated as of the 5th Magn. He muſt have miſtaken ſome other Star for it. 31. C A S. S I C P E AE. – R. A. In Time. * P. D. Mag. o / // h / // o / // Caſſ. Hev. 22. I 2. 7. I O. 48.28 23. 5-5C 5 | In fimbria tunicae prima præc. The Pol. Diſt. of this is ſet down 5° 5' 50”; but from the deſcription and the latitude it muſt mean to be, as ſtated above, 23° 5' 5o". R. A. In Time, P. D. Mag. o f Z/ h /, // O / // F}. I 7 I 2. 3O. a. I 2. 34.3C O, 5.o. 18 22.5.3. O 5.6 In ſcabelli parte auſt, pracca- 1725, 3.I. I 2.32. 3O o, 5o, Io 22.53. O * **- | k Obſerved by Flamſteed Dec. 8 and 16. 1691, and Oét. II. Dec. 5. 1693. Theſe, when brought up to Jan. c. 1800, give, From the Edit. 1712, R. A. o' 57' 16",9. P. D. 22° 17' 14",6. Mag. 5.6- I 725, o° 57' 8",9. 22° 17' 14”,6. 6. This is one of Dr. Herſchel’s double Stars, (IV. 17.) --> CHAP. II.] The oºrvations of each S T A R claſſed together. 35 x -º- *w- ATA, ºur- *r 2, U R S AE M I N O R I S. Date of Obſ, R.A. obſerved. Z. Diff. obs'. Bar. Ther. Appº P.D. ded". Mag. h / // O / // O / // Nov. 28, 1795. o. 55.54,7| 36. 4, 8 || 29,50 || 36 || 2:30.36 9. Io l ! In conſequence of what Dr. Herſchel had ſaid concerning this Star, I have often looked carefully for it ; and on one very clear evening obſerved it as above, but ſo faint that it was fearcely diſcernible. - | Its mean Poſition for Jan. o. 1800, ſeems to be, | R. A. An. Var. N. P. D. . An. Var. Mag. h / // // - o / // // Sine. Tang, Sec. o. 56.18, 1 || + Io,494 || 2.29.25,8 – 19,45 9.1o ** 23,015 31. C A S S I C P E AE. Date of Obſ. R. A. obſerved. Z. Diſt. obs".| Bar. Ther.|App P.D. deda. Ma h / // O / // O / // Nov. 26, 1794 o' 57. o.5 | 16.16.16 29,42| 44 22.18.54 6 || W. 27. i I I 9 357 || 4 | 5 I 6 || W. Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An. Var. Mag. h 7 // // O / // // Sine. Tang. Sec. o. 57. I 8,2 | + 3,870 22. I 7.2 ,7 - I 9,43 6 || 1925 2,44o 2,637 i 36 ***, *s *. * ...” Q & * *~ ^4. * =& -, * * s: ~ * * * Particulars concerning each STAR, deduced from other Authors. [CHAf. If, Yx -x ºr ¥- —r wº * rº-rº. CHAP. II.] The obſervations of each STA R claſſed together. 37 --- *… *—-i-4- —-ºf- Date of obſ, R. A. obſerved. z. Diff. obs'. I Bar. Ther!App P.D. ded. Mag. h / // O / // O / // Nov. 7, 1795 o. 59, 7,5 27.24. I4 29,8o 49 II. Io.43 7 || I 5. 8,4 I 8 99 || 38 39 7.8 || b- Hence the mean Poſition for Jan. o. 18Oo, ſeems to be, || R. A. | An. Var. N. P. D. ſ. An. Var. |Mag| h / // // o A // //r Sine. Tang Sec. o. 59.23,O | +4,796 || II. 9.27,5 || - 19,38 7 || 398 I 5,069 5, 167 Date of Obſ. R. A. obſerved. Z. Diff obs'. Bar. Ther. App P.D. ded Mag. h / // O / // O / // Nov. 26. 1794. I. I.45 I9. I4,26,5 29,42 44 || 19.20.40 | 6.7 || W. 27. ºrg 45 3 I >57 || 4 I 36 7.6 || W. Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An. War. Mag. h / // // O / // // * rººt Sine. • Tang. Sec. I. 2, 3,3 || -- 4,086 | 19. 19. 7, I – 19,3O 6.7 || ,944 2,852 3,023 Date of Obſ. R. A. obſerved. Z. Diff. obs". Bar. Ther. App P.D. deda, Mag. h / // O / // O / // Nov. 13, 1793. I. 3.40 25. 3.37 28,99 || 46 13.31.24 7 W. Dec. 3. 4.334 3.35 292.89 3O 23 7 || E. Hence the mean Poſition for Jan. o. 1860, ſeems to be, R. A. An. Var. IN. P. D. An. Var. Mag h Z. // // O / // // - S’ ne Ta tº e Ing. NOR. C. I. 43 534 +4,593 I 3.29.35, I — 9,28 7 || >972 4, 164 4,282 – t * * * 38 Particulars concerning tech: STAR, deducedfºnsºr ºuthers. . . [Ghºpſ, --- * * > -ºº-ºº: ~! 3– *- & * †. º *- * º: ...t x-r ******** -ººrº, e. .* -- —r- y ---TE–1 *** * **º-x.º. * * as--ºr * 3. y- -vi *~. r − x; g * xx x . +----s: Kº Tºr ** >~~~~ *, *.*.*.*.*.*.*.*.*.*… -3- }~~ + -º *** * ~ *-* ~ *…* a ~ . ** ** *-* * * * & * *** *~ **** - ~~~ *- : *-is **- º i * $ § * - *: * * * "... * { * ge ** * * * * % * *& • * “s *. * 3. 3. wº *r -- ** X. * **. & i --- # & *- 3. x * --- * ** ** * * * * * * **** --- t * -- —K-—-r 3. * ** * *a sº * * * * * * ...? ** * * * * * * * * *__º___* < * * * * -rºr r º: i * sº * {. ...” & - ** *º- * *, -º- .# & ---r f 4 **** -—---º: *º- —a. ¥ -*. #4. ** - * --. f char. II.] The Obſervations of each STAR claſſed together. 39 Date of Obſ. |R. A. obſerved. Z. Diff. obs". Bar. Ther. App P.D. ded". Mag. h / // o A // , ... O A // Nov. 26, 1794 | 1. 6.19,2 26.13.48,5| 29,42 44 12.21. Io 7 W. 27- I. 6.19 49 257 || 4 I. 9 || 7 || W. # c | Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An, War. N. P. D., An. War. |Mag. h . . /r // o / "//* AA" Sine. Tang. Sec. I. 6.39;0 | +4,794 | 12.20.394 | - 19,21 || 7 || ,977 || 4,569 || 4,677. Date of Obſ. R.A. obſerved. Z. Biff. obs". Bar. Ther. App P.D. ded: Mag.ſ h /* // O. /* // . G / Z/ Pec. i. 1794 | 12. 7.37.7 || 54,40.53 29,47 4o | 16. 6.48 7 S. P. Facé W. Nov. 24, 1795 34 || 4 I. I I 28,74 || 44 7. 2 7 || S. P. - – W. 28. 3437 2 I 29,50 || 36 17 7 S. P. - - E. Dec. 23. 37,3 39 ,83 || 45 33 7 || S. P. 3O. 37, 3. 36 393 || 4 | 32 || 7 || S. P. l *... Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. War. N. P. D. An. Var. Mag. h A //* /A: . o / // 2. Sine. Tang. Sec. 13-7.46,5| + 1,722 | 16. 8.38,0 + 19, 18 7 || >961 * 3,596 40 Particulars concerning each STAR, deduced from other futhors, ICHAP. II. *—-------- ---. *- *~ 3. *— -aº- $–a–-a & ---4- r——- Y-- * * § -zº; *T* Nº. 3: ... sº * --- ~~~~ Fº - *-e ** *Yºr, $º tº **** Long, 18oo, | Lat. Mag, S o / // s • * Z. a / º 1 5 Tych. J, 1. 19.28. o 1. 22, 14.58 52.48. o | 6 || Qes in rea, ºre lines sum is tº º 25 Hev. I. 20. I I .50 I. 22. 8.27 52.46.5o 5 In fimbria Tunicae 2*. *: 35 F). 1712 I. 20.39.4o | I. 22. 1.56 52.49-54 6 36 1725 I. 20.39.40 I. 22. I 1.56 52,49.5o 5.6 | R. A. i In Timie. P. D. Mag, . ." o A // h / // o / // : * f 25 Hev. J. 5.39. 12 I. 2.37 23.42.45 5 . 35 Fl. 1712 | 16. Io. o ! - 4.4.O 23-3 O. O 6 36 I 725 16. Io. o I • 4-40 23.3O. o 5.6 } * | Obſerved by Flamſteed Dec. 16. 1691–Oét. 11. Dec, 5. 1693. Flamſteed's brought up to Jan. o. 1800, is, R. A. I* 17 57",6, P. D. 22" 54 51°, i. This is one of Dr. Herſchel's double Stars. (V. 83.) 38. C A S S I O P E AE. Long. 18oo. Lat. t Mag. S o / // S o / /? b / A/ 17 Tych. 1. 22.33, o 1, 25.19.58 54.27. O 6 || Media Scabelli. 37 Fl. 1712. As I. 23.28.45 I. 25. I. I 54. II.2.2 6 || In Scab. Bor, parte præc. *. 38 1725 I. 23.28.44 I. 25. I. o 54. I 1.20 || 6 «s | d | Not in Hevelius's Catalogue, R. A. In Time. P. D. Mag. O / // h / // b / // iº - * 37 Fl. 1712. A. . 17. I 5. O I. 9. O 2 I-23. O 6 38 I 725 I 7. I 5. O I. 9. G 2 I. 23. O 6 *::: l Obſerved by Flamſteed Oét. 11. 1693. This brought up to Jan. o. 1800, is, R. A. 1° 16' 36%0. P. D. 20° 48' 4",4: CHAP. II.] The Obſervations of each STAR claſſed together. 4. I 36. J C A S S I O P E AE. Date of Obſ. R.A. obſerved. Z. Diſt. obs". | Bar. |Ther. App P.D. ded". Mag ſ h / // | o / // e / // Nov. 26, 1794 | 1. 11.40,5 . 15.38.30 29,42 || 44 22.56.41 6.5 || W. 27. 4C25 34 257 || 4 I 37 6.5 || W. Dec. 23, 1795 43,8 39. O ,83 || 45 5.4 || E. 3O. 42,7| 38.59 393 || 4 I I 2 6.5 } | | | Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. War. N. P. D. An. War. Mag, A , ºr // o / // // Sine. Tang. Sec. I. 12. 9, 1 | +4,045 22.55. 8,5 - 19,07 || 6.5 || 92.1 | 2,365 2,568 38. C A S S I O P E AE. Date of Obſ, R.A. obſerved. Z. Diſt. obs". Bar. Ther. Appº P.D. ded". Mag h / // o ſº Z/ e / ?/ Nov. 26, 1794 | 1. 16.14,5| 17,47.24,5 29,42 44 | 20.47.44,5 | 6.7 || W. 27. I 5– 46.37,5 357 || 4 I 48,31 || 6.7 || W. Quaere the Z, D. Dec. I. I437 || 47. I935 347 4O 47.49 || 6 || W. 3. I433 3O. 34o || 48 39 || 6 || W. Nov. 24, 1795 I 8 43. 28,74| 44 27 6 W. 28. I7,7 48. 29,50 || 36 20 7.6 || E. Hence the mean Poſition for Jan. o. 18oo, ſeems to be, R. A. " An. Var. N. P. D. An. War. |Mag h / // // o / // A/ Sine. Tang. Sec. I, 16.33,4| *H4,265 20.46. I3,6 – 18,95 6 3935 º 2,82O 42 Particulars concerning each STAR, deduced from other. Authors. [CHAP. II, C Ass I O P E E H E V E L II 28. R. A. In Time. P. D. Mag. || o f ºz h / // . • 2 // | > 28 Hey. 17.28.38 1. , 9.55 23.26. 5 || 6 || In fimbria Tunice sº. This brought up to Jan. o. 1800, is, R. A. 1° 18' 55",6, P. D. 22" 42' 3". It was not obſerved by Flamſteed. - y 40. h. C A S S I O P E JE. * R. A. In Time. P. D. Mag, || - o / // h / // • 2 // - - - 29 Hev. I8. 3. I I. I 2. I 2. 18.43.36 6 || Præc. 2". Bor...extra Scab, 39 Fl. 1712 I 8.42.3O I - I 4.5O 18.33.5o 6.5 || Borea in Scabello. - 4.O I 725 18.4 I. o I. I.4.4.4. 18.33.3O * : * Obſerved by Flamſteed with the Sextant, - Aug. 18, 1 68o, twice. - - Mur. Arc, Dec. 16, 1691 ; Dec. 5, 1693. Theſe of Flamſteed, brought up to Jan. o. 1800, are, 1712. R. A. 1° 23' o',o. P. D. 17° 39' 12". I 725. 1° 22' 54",o. 17° 38' 52", 2. char. II.] 43 The Obſervations of each S T A R claſſed together. C A S S I O P E AE H E V E L II 28. Date of Obſ. |R. A. obſerved. Z. Diſt. obs". Bar. Ther.|App" P.D. ded. Mag. h / // . o / // - o / // - Dec. 23. 1795 I. 17.49,3| 15.56.40 || 29,83 || 44 22.38.31 || 6.7 3O. 4937 36 || 29,93 || 41 | 35 | 7 Hence the mean Poſition for Jan. o. 18oo, ſeems to be, R. A. An. Var. N. P. D. An. Var. Mag. * h / // . // • O / // // Sine. Tang. Sec. I. 18. 6,5 || --4,135 | 22.37.27,9 || – 18,90 6.7 || ,923 || 2,399 || 2,599 Date of Obſ. R. A. obſerved. Z. Diff. obs'. Bar. Ther. App P.D. dejº. Mag h / // o / // o / // Nov. 28. 1795|13. 20.50,7| 55. 7. 6 29,50 | 36 | 16.33. 4 || 7 S. P. Jan. 9. 1796|| 55 I 8 3 IO || 44 13 6.7 || S. P. May 16. 5957 22, 2.35 ,68 || 49 32.29 7 || Face W. I7. 59,8 37 ,8o 54 27. | 7 || - – W. - ! Hence the mean Poſition for Jan. o. 1800, ſeems to be, *... R. A. An. War. N. P. D. An. War. Mag. h / // // O / // // - Sine. Tang. Sec. 13. 21. 2,5 + 1,496 | 16.33.52,O | + 18,81 7 wº 3,397 3254. I 40. h C A S S I O P E E. Date of Obſ. R. A. obſerved. Z. Diſt. obs". Bar. Ther. Appº P.D. ded". Mag. h / // o 2 // O / // 4. Dec. I. 1794. I. 22.27,7 20.34.26 29,47 || 4 || | 18. O.39 6 || W. 3. 28,6: 32 340 || 48 || 34 6 || W. Nov. 24. 1795 32 47 28,74 || 44 I 9 6 || W. 25. 32 44 . 379 || 4O | 22 6 E. Hence the mean Poſition for Jan. o. 18oo, ſeems to be, R. A. An. Var. N. P. D. An. Var. Mag. - h A // // O / // // Sine. Tang. Sec. | 1. 22.48,4| +4,522 17.59.1 1,3 — 18,76 6 || º 3.ogo 3,238 G 2 44 Particulars concerning each S T A R, deduced from other Authors. [CHAP. II, R. A. In Time. O / Z/ h & //, 41 Fl. 1725 19.56. O | 1. 19.44 This brought up to Jan. o. 1800, is, R. A. 1. 27' But it is not in the Edi 41. C A S S I O P E AE, -m: >-2. --wºº. P. D. - Mag. o z za - . 6 18.57.5o 56”,3. P. D. 18° 23' 28”,8. t. of 1712; nor among Flamſteed's Obſervations; nor viſible at preſent. ºr. ‘. . , *- i * 42. g C A S S I O P E AE. R. A. In Time. P. D. Magi o , ºr h / //, o z & 3o Hev. b I 9.2 I. 52 I. I.7.27 21. 7.15 5.6 || Piac. 2. Aut, in med, sedili. 40 Fl. 1712. g I 9.57.3O F. I 9.5o 20.58. IO | 5.6 || In Bor. Scab, media. 42 1725. 9, | I9.57. 30. I. I 9.5o 20.58. Io 6. | - Sextant, - Aug. Mur. Arc, Dec. This of Flamſteed, brought up to Jan. o. 1800, R. A. I* 27° 46”,2. Obſerved by Flamſteed with the 43. C C A S S I Long. 18oo. - S O /* // I’ S O a z/ 18 Tych. I. 2 I-58. C I. 24.44.58 41 Fl. 17 2. & I. 22.34.5 T | I. 24. 7. 7 43 I 725, C. I. 22.34-53 I. 24. 7. 9 } Not in Hevelius’s Catalogue. - R. A. In Time. O / Ay h / - // 41 Fl. 1712. to 2O. I. O I. 2C. 4- 43 1725. C 2O. I - O T. 20. 4. Obſerved by Flamſteed with the Sextant, - Aug. Mur. Arc, Dec. This brought up to Jan. o. 1800, is, R. A. 1" 27° 43',4. P. D. 22° 58' 49”,8. 18, 1680, twice. 16, 1691 ; Oét. I I, Dec. 5, 1693. is, P. D. 20° 23' 48’’,8. O P E AE. Lat. | Mag - 52. 8.30 6 In Scab. proxime ad plantam pedise. 51.5o. 16 6.5 || In Scab. Auſt. med, ſeq. 5 1.5o. 12 6 ſº P. D. Mag O f : A/. 23.33. Io. 6.5 23.33. IO 6 || 18, 1680, twice. 16, 1691 ; Oét. I 1, 1693. chap. II.], - . The Obſervations of each STAR claſſed together. 45. $ *...* , x.º. º. -- v. “ * . ." • ,-- . wº", * ... < * ~ *fºra ºf ..." & " - - rº- -º-º-S --> -- " - - - - ". . . * * * * ~ : -- ~~~... • -- ~x ºr - * *** - wº., †. 41. C A S S I C P E AE. No T WIS I B L. E. 42. g C A S S I O P E AE. Date of Obſ. R.A. ºbſerved. z. Diff. obs'. Bar. Ther. App P.D.ded'ſ Mag. - | h ’ ºr o ºf // or A // iſ Nov. 28. F795. I. 27.22,7 | 18. Io, 16 29,50 || 36 | 20.24.52 6 || Dec. 23. 2.223 27 ,83 || 44 41 6.5 3Qe - * 23 * 4. I 44. 6 Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. - An. Var. | N. P. D. An. Var. Mag.[ h a wº // o ſº Z/ AA" Sine. 2,689 2,870 -- Tang. Sec. : 1. 27.39,9| +4,411 | 20.23.39.1 | – 18,61 6 || 937 *- - Zº- 43. c. C A S S I O P E AE. Date of obf R. A. obſerved. z. Diff. obs'. Bar. Ther.App. P.D. ded. Mag| H / // • * * - A. o 4 // Dec. I. F794. I. 27.22,7| 15.35. I I 29,47 || 4 || || 23. o. o 6 W. 3. 23, I 19,5 340 || 48 22.59.52 6 W. Nov. 24. 1795 26 29 28,74 || 44 43 6.7 || W. 25. 27 | 28 || >79 || 4o 43 || 6 E. Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. Am. Var. N. P. D. An. Var. |Mag h / /?” A/ o A // // sine. 2,358 2,562 Tang, Sec. I. 27.42,4| +4,244 22.58.33,5 | – 18,60 | 6 || ,921 | | 46 Particulars concerning each STAR, deduced from other Authors. [CHAP. II. *-a-jº- 46. d C A S S I O P E AE. R. A. In Time. P. D. Mag, 0 º' ſº h / // o / " w 32 Hev. 22.33. 6 I. 3O. I 3 23. O.3O 5 || In fimbria tunicae 4th infima. 44 Fl. 1712 23. I O. O I. 32.4O 22.51.5o 6.5 || In Seabello Auſt. * 4 ſequens. 46 1725 23. IO. O I. 32.4C 22.5 I.5o Obſerved by Flamſteed with the Sextant, - Aug. 18, 168o. - Mur. Arc, Dec. 16, 169 I ; Oét. I I, Dec. 5, 1693. This brought up to Jan. O. 1800, is, R. A. 1" 4o' 41%6. P. D. 22° 18' 16",3. * __* - chap. II.] The obſervations of each STA R claſſed together. 47 Date of obſ, R.A. obſerved. z. Dit, obº. Bar. Therlapºr.D. dºlºs h / // O / // © / // Nov. 24. 1795|13. 32.12 || 56.17. 4 || 28,74 44 || 17-43. 9 | 7.6|| S. P. Face º: 25. I 2 9 279 4O 5 7.6 || S. P. - - E. Hence the mean Poſition for Jan. o. 1800, ſeems to be, - R. A. • An. War. N. P. D. An. Var. Mag. h / // // o / // // Sine. [ - Tang- Sec. ||13. 32.22,4| +2,433 || 17.44. I, I | + 18,46 || 7-6 || >952 3,127 3,283 ^ - - * ſ Date of obſ, R.A. obſerved z. Diff. obº. Bar. Ther. App P.D.ded. Mag| h / // O / // O / // z Nov. 24, 1795||13. 35. 3 || 62.42.17 28,74 44 24. 8.38 7 || S. P. Face W. 25. - 3 3O 379 4O 54 7.8 || S. P. - - E. 28. 327 31 29,50 || 36 56 7 S. P. | |- A. k. }* Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. | N. P. D. An. Var. Mag. h / // // O / // A/" Sime. Tang. Sec. 13. 35.14.1 + 1,868 24. Io. 6,9 + 18,37 7 || ,912 || 2,228 |º 46. d C A S S I C P E AE. Date of Obſ. R.A. obſerved. z. Diff. obº. Bar. Ther. App P.D. ded. Mag. h / // o / // , o / // Dec. 1, 1794. I. 40,19,2 | 16.15.25 | 29,47 || 4 || 22.19.45 6 || W. 3. I 8,9| 3 I 340 || 48 39 6 || W. Nov. 24. I795 23, 5 | 43 28,74 || 44 28 6.7 || W. 25, 23 47 579 || 4O 24. 6 || W. * Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. * An. War. N. P. D. An. Var. Mag. h / // A/ O / // // Sine. Tang. Sec. \ I, 40.39,4 +43455 22.18.17,6 cº- I 8, 15 6 592 5 || 2,438 2,635 48 * Particulars concerning each STAR, deduced from other Authors. [Chap. t - ~– →--—s. *--d-: 47. C A S S I o P E JE. | R. A. In Time. P. D. |Mºl - O / fº h / y/ o , ºr º | - - * . . . 45 Ceph. Hev. 23.44. I4. 1. 34.57 || 14, 17.5 I | 6 || Sub Faſcia precedens. 45 Caſſ, Fl. 1712 24. O. o I. 36. O 14, 14.3o 6.5 || 47 I725 : ; 24. O. O. I. 36. O || 14.14.39 || 5 | Obſerved by Flamſteed Dec. 16, 1691. * - This brought up to Jan. o. 1800, is, R. A. 1° 45' 48",3. P. D. 13° 41' 13”, This, I believe, is one of Dr. Herſchel's Double Stars. (V. 84.) - 48. e C A S S I C P E AE. R. A. In Time. P. D. (Mag| a. * * o z // h & /? 0 7 A/ S 33 Hev. C 23.45. IO I. 35.4O 20.48.38 4.5 || Infima scabelli. - r Quære-Whether this is the Stars 46 Fl. 1712. C 24.2O. O I. 37.2O 20.37. 5 4.5 || In Bor. Scabello ſeq. Auſtr. 48 I725. e 24.2C, C I. 37.2O 20.36. 5 5 || - Obſerved by Flamſteed with the Sextant, - Aug. 18, 1689. Mur. Arc, Dec. 16, 1691 ; Dec. 5, 1693. This of 1725, brought up to Jan. o. 1890, is, R. A. 1' 45. 46",9. P. D. 20' 2' 51",2. That of 1712, - - - - - - - - - - - - - - - - - a 20° 3' 51",2. See (p. 50) the note on Nº. 5o. f Caſiopeº. Ca AP. II.] The Obſervations of each STA R claſſed together. 49 47. C A S S I O P E AE. Date of Obſ. R.A. obſerved. Z. Diff. obs". Bar. Ther. App P.D. ded". Magſ * h / // O / // - o / // Dec. 1. 1794 I. 45. Io,4| 24.52. 6 29,47 | 40 || 13.42.54 6 || W. 3. I O, I I6 4o 48 44. 6 W. Nov. 24. 1795 16 23 28,74 || 44 38 6.7 || W. 28. I 525 29 29,50 sº 3 I 6 || E. | Hence the mean Poſition for Jan. O. 18oo, ſeems to be, | R. A. An. War. N. P. D. An. War. Mag. h / // // O / // Z/ | Sine. Tang. Sec. I. 45.34.9 || --5,506 || 13.41.28,O | – 17,95 6 || 971 || 4,105 || 4,225 | r -ºr-r-mºr | _s=---º-º-º- ~~ 48. e C A S S I O P E AE. Date of obſ, R.A. obſerved z. Diff. obs'. I Bar. Ther. App P.D.ded..! Mag. h / // o / // … O / // Dec. 30, 1795 | 1. 45.28,7 | 18.29.57 29,93 || 41 | 20, 5.1o 5 Jan. 8. 1796 28,3 56.5 24-2 || 44 I I 5 Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. War. N. P. D. An. Var. Mag. h & // // Q / // S // | Sine. Tang. Ssc. I. 45-49,3| +4,709 2O. 4, 8,7 – 17,90 5 sº 2,737 || 2,914 5o Particulars concerning each S T A R, deduced from other Authors. [CHAP. II. *~~~ 87. U R S AE, vei Io. i D R A C O N I S. Long. 18oo. * Lat. Mag. S o / // S o A // º A /? - 28 Drac. Ptol. i 4. 7.2O. o 5. 1.36.47 64.40. o | 4. || Piaecedens złum. Ul Beigh. 4, 27.25. O 5. I. 29.35 65.2 I. o 4. 28 Tych. i 4, 29.17. o 5. 2. 3.58 65. I 8. o 5 || Quae flexm ſeq; 24a. Pr. H. 4, 29. 3- C 5. F. 57.5O 65.21.5o 4. 7 Drac. Hey. i 5. O. 5. O 5. 2. I. 37 65.2 I. 5 5 || Prope 1" Cauda parva. 5 Fl. 1712. i 5. o.31, 19 || 5. 2. 3.35 | 65.21.56 5 || Ante penultimam prac. 1 O I 725. i 5. O-3 I - 5 5. 2. 3.2 I 65.21.38 5 || Duarum praec. { i || R. A. In Time. P. D. Mag. O A // h / // O / // 7 Drac. Hev. i 205.25. O I 3, 4 I.4O 23.35-35 5 5 Fl. 1712. 205.37.30 I 3, 42.3O 23.44. O 5 I O. I 725. I | 2O5-37. O I 3. 42.28 23.44. O 5 | Obſerved by Flamſteed with the Sextant, - Dec. 27, 1681. Mur. Arc, Mar. I 3, 1694. This brought up to Jan. o. 1800, is, R. A. 13° 45' 40",6. P. D. 24° 17' 1",7. 5o. f C A S S I O P E AE. R. A. In Time. P. D. Mag. || 6 > ,7/ h / // Q A // 34. Hev. 23.56.48 I. 35.47 I 9. 14, 18 4.5 || Media Scabelli. 48 F1. 1712, f 24, 29. O I. 37.56 I9. 6.2O || 4.5 || Borea Scabelli. 5o 1725. f 24-29. O I. 37-56 19. 6.2O || 4.5 | l Obſerved by Flamſteed with the Sextant, - Aug. 18, 168o. Mur. Arc, Dec. 16, 1691 ; Dec. 5, 1693. This brought up to Jan. o. 18Co, is, R. A. I* 46' 38”,9. P. D. 18° 33' 9",5- N. B.-N* 33 of Hev. refers to N* 18 of Tycho ; and this Star to N° 17 of Tycho; and moſt probably they do relate to their reſpective Stars, as well as to N° 48 and 50 of Flamſteed: yet the differences are ſo great, there muſt have been ſome error in the redućtion; for Flam- ſteed's Catalogue correſponds ſo well with my Obſervations, that there is no reaſon to ſuſpect a change of place in the Stars themſelves. Flamſteed's Catalogue does not refer to Tycho. ------------ -------- -º-º: -º-º-º-º-º-º-º: -- 3- sº º-º-, *-*.*-º xºtºxº-rees. -º-º-º- —y --~. thap. II.] The Obſervations of each S T A R claſſed together. 5 I $ 87. U R S AE, wel Io. i D R A C O N I S. Date of Obſ. R. A. obſerved. Z. Diſt. obs". * Bar. Ther. A pp. P.D. ded". Mag ſ / h a *// O / // o A // Jan. 9. 1796 || 3: 45.26.2 62.49.57 | 29, Io 44 24, 16.20 5 || S. P. I I • 27 5Q. 2 , I 2 46 25 5 S. P. Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. | An. Var. N. P. D. An. Var. Mag. h / // // _o / // // Sine. Tang. Ses. 13. 45.35,0} + 1,738 24.17.22,O + 17,90 5 || 9 || 1 || 2,216 2,431 i i 2" 5.o. f C A S S I O P E AE. Date of obſ, R.A. obſerved. Z. Diff. obº. Bar. Ther.App. P.D. deg|Mag. --- h A // O / // Q * // Jan. 16. 1796 | 1. 46.19,2| 20. o.48 29,89 || 53 | 18.34.18 4. I7. I 9,0 5 I ,85 46 I 5 4. Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. War. N. P. D. An. Var. Mag || N h A // ,”/ o ſº AA // - Sine T S ; Inº, ang, &C - 1. 46.38,9| +4,847 | 18.33.16,5 || – 17,95 4 || >948 2,98o 3,143 ww.rrºw--> 52 Particulars concerning each STA R, deduced from other Authors. [CHAP, II. -mſ- 49. c Ass I o P E E. Not in Hevelius’s Catalogue. R. A. In Time. r P. D. Mag. || O / // h / 2. o a ze w 45 Fl. 1712 24. I4. O I. 37.36 || - 15.24.5o 5 49 I725 24. I4. O I. 37.36 I 5.24.5C 6 | | || Obſerved by Flamſteed Dec. 16, 1691; Dee. 5, 1693. - This brought up to Jan. o. 1800, is, R. A. 1° 47' 6",9. P. D. 14' 51' 39";7. 51. C A S S I O P E AE. Not in Hevelius’s Catalogue. R. A. In Time. - P. D. |Mag. - © / // h / // O A £/ { 49 Fl. 1712 24.55. 9 I. 39.40 16.56. O | 6 5 I I 725 24.55. O 1. 39.40 | 16.56, o | 6 | | - !. Obſerved by Flamſteed Dec. 16, 1691. The Zen. Diſt. doubtful. No other Obſervation. This brought up to Jan. o. 1800, is, R. A. 1° 48' 52".5. P. D. 16° 22′ 57%4. 54. C A S S I O P E AE. s. - R. A. In Time. P. D. Mag. || ſ O A //" h / aſ I o / /A j 52 Fl. 1712 25.52. O I. 43.28 19.56.40 7 || - 54. I725 25.52. O I. 43.28 19.56.4o 6 || - * - Obſerved by Flamſteed Oét. 11, 1693, and no other time. ; This brought up to Jan. o. 1800, is, R. A. 1° 52' 11", 2. P. D. 19° 23' 53",7- caar II.] The obſervations of each STA R claſſed together. 53 49. C A S S I O P E AE. Date of obſ. (R.A. obſerved. Z. Dit. obsd, Bar. Ther.|Appº P.D. ded". Mag. p h f // O. / // O Z // May 27, 1796|I. 46.24.6 53,26.58 29,45 57 || 14:52.47 6 || S. ; 3O. 28,2: 27. 7: 28,8o 5o 55: | 6 || S. P. 3I. 2725 26.59 28,87 52 48 6 || S. P. Hence the mean Poſition for Jan. o. 18oo, ſeems to be, R. A. An. War. N. P. D. An. Var. Mag. h / // // O A //* // Sine. Tang. Seg. 1. 46.52,8| + 5,319 || 14.51.22.9 || – 17,95 || 6 || >967 3,771 3,901 51. C A S S I O P E AE. Date of obſ, R.A. obſerved. z. Diff. obº. Bar. Ther.App. P D.ded Mag| t h / // o A // o 2 // * May 25, 1796|| 1. 47.40,5 . $4.58.47 29,43 58 | 16.24.40 || 7.8 || S. P. Scarcely viſible. t 27. - 433.5 44.25 245 57 | 38 7.8 || S. P. Hence the mean Poſition for Jan. c. 1800, ſeems to be, | R. A. An. Var. N. P. D., Anvar. Mag. h . . A/ * O Z // # // Sine. Tang. Sec. * | 1.48. 5,3| + 5,125 | 16.23. I4, I - 17,37 || 7.8 || >959 || 3,400 || 3,544. { 54. C A S S I O P E AE. Date of Obſ. R. A. obſerved Z. Diſt. obsº. Bar. Ther. Appº P.D. ded". Mag. / // . w O / /A O A // Dec. 3. 1794. I. 51.44,6: 19. Io. 2 | 29,40|| 48 || 19.25. 5 || 6.7 || W. Nov. 25. 1795 5O | I 2 28,79 || 4O 24-55, 5 || 6.7 || E. Dec. 30. 4-952 23 29,93 || 4 I 43 7 Jan. I I. 1796 5O | 223.5 , 12 || 46 44, 5 7.8 || Scarcely viſible. l | * Hence the mean Poſition for Jan. o. 18oo, ſeems to be, R. A. Am. Var. N. P. D. An. Var. Mag. h /* // *A O / // A/ Sine. Tang. Sec. I. 52, 9,6|| +4,845 | 19.23.44,6 - 17,70 7 || >943 2,84O 3,OI I -m- 54 Particulars concerning each STAR, deduced frºm other Authors. *fchap , II, 55. C A S S I O P E AE. R. A. In Time. P. D. Mag. o / // h / // o º ſº t 53 Fl. 1712 27.4O. O 1, 50.40 24.57.5o 6 55 I725 27.4O. O I. 50.4O 24,57.5o | 6 Obſerved by Flamſteed Oét. 1 1, 1693. This brought up to Jan. o. 1860, is, R. A. 1° 58' 50", 5. P. D. 24° 25' 34",6. CHAP. II.] The Obſervations of each S T A R claſſed together. * 55 —m- There is a Double Star of Herſchel's Cat. III. 61. about R. A. 13° 52' o”; P. D. 24° 24′ o”; which comes on the Meridian about this time. - 55. C A S S I O P E AE. Date of obſ, [R. A. obſerved. Z. Diff, obs'. Bar. Ther. App P.D.ded.|Mag| 1 / / o Z // Q / // Jan. 17. 1796|| I. 58.40 | 1.4. 9.14 29,85 || 46 24.25.58 6 May 25. 37.5 63. O.22 || 43 || 58 26.45 6.7 || S. P. 26. 37, 5 2 I 34o 58 44. 7 || S. P. 27. 36,6 | 24. 245 57 46 || 7 || S. P. | Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. | An. Var. N. P. D. An. War. Mag. h / //" // o / // i/? •- s Sine. Tang. Sec. - I. 58.57,8. +4,542 24.25.22,3 - I'7,44. 7 º 232O2 2,419 H Particulars concerning each STAR, deduced from other Authors. [CHAP. II. 29 Ptol. Cº. U]. Beg. .29 Tych. & Pr. H. 8 Hev. (2. 7 Fl. 1712. & I I I 725 & 8 HeV. O. 7 Fl. 1712. & I I I 725. & iS Long. O /* - // II. I.O.. O O. 34. O 2. I O.30 I. 34. O 2.32.36 3. 3. A I 3. 2.43 R. A. O / // 298.49. 16 2O9. 2. O 209. O. O Long, 1800. S O / // 5.26.47 5.33.35 4.57.28 4.26.5o 4.29. I 3 4.35.27 4 34.59 In Time. / // I 3. 55. 17 I 3. 56. 8 I 3. 56. O I I. o. D R A C O N I S. Obſerved by Flamſteed with the Sextant, - Dec. 27, 1681. This brought up to Jan. o. 1800, is, According to 1712 According to De la Caille's Obſervation Bradley - I725 Zach - - - R.A. 13° 59' Mur. Arc, Mar. I 3, Ap. 19, Lat. Mag -Q / // 65.30. O 3 66.27. o | * 66.36. O 2 || Quae flexm prox. ſeq. 66.21.45, 3 66.21.20 2 || Prima Caudae. 66.2 I. 43 3 || Ante penult. Caudae. 66.20.52 2 P. D. |Mag. O / // 23.58. O 2 24. 7-4-5 3 24. 8. 2 || 2 || 1694. -- 6",5. P. D. 24° 33’ 58". - - 13° 58' 58',5. - - 24° 34' 14”,8. - - 13° 39' 6".5. - - 24° 34' 3",8. sms ºn 1.3% 59' 2", 5. * ºt 24. 34' 5",8. - - 13° 58' 58”,88. Mr. Pigott, Phil. Tranſ. I'783, p. 254, ſays, this has certainly leſſened in ſize. In Phil. Tranſ. 1786, p. 208, he ſays, it is only a bright 4". So it has appeared to me. . Dr. Herſchel has ſuſpećted it to be variable. Yet is that not aſcertained. - chap. H.] The Obſervations of each STAR claſſed together. 57 * ~. +– - ---- Y - ** • * - - * ~ * > * re-r- ... " - y------ ~ :--" - ar-ºr--- - -** : *. 2. - - sw-wº- 11. & D R A C O N I S. Date of Obſ. R. A. obſerved. Z. Diff, obs". Bar. Ther. Appt P.D. ded.] Mag| h / // O / // O ºf // & - - - | Jan. 9... 1796 |13. 58.5o,4| 63.12.4o | 29, Io 44 24:39. 7 || 4 S. P 1 I • * 5 I 43 , 12 || 46 H O 4. S. P. - sº \ | {} Hence the mean Poſition for Jan. o. 1800, ſeems to be, sº R A. Am. Var. N. P. D. An. Var. Mag. h / // // O / // // Sine. 13. 58:58,6| + 1,612 24.40. 4,6 || + 17,36 4. * 58 Particulars oncerning each STAR, deduced from other Author. [CHAP. II, 3. U R S A. M I N O R I S. Not in Hevelius’s Catalogue, R. A. In Time. P. D. Mag. O f // h y // Q / a Not in Fl. 1712. 3 Fl. 1725 || 2 II.24. O I4. 5.36 13.56.55 6 Obſerved by Flamſteed Ap. 10, 1704. This brought up to Jan. o. 1800, is, R. A. 14' 6' 10",2. P. D. 14° 28′ 16”. _*- t a -*- -1. *—a * & A. -*—º. —A------— -*- * - ~~ -**** —ºv- 4, b U R S A. M. 1 N O R I S. R. A. In Time. P. D. Mag. O f // h / // O Aſ (ſ/ 4 Hew. 2 I 3. O.4. I I4. I 2. 3 IO-54.24 6, Ad Humerum altera. 4 Fl. 1712. b 2 I 2.47. O I 4. II. 8 II. O.30 5 || Ante Hum" 2m praecedens. 4. 1725. b 213,46.30 14, 15. 6 II. O.4O 5 Obſerved by Flamſteed with the Sextant, - Dec. 31, 1681. - - Mur. Arc, Mar. I 3, 1694; Ap. Io, 1704. This brought up to Jan. o. 1800, is, - - , - By Edit. 1712, - - R. A. 14% 9' 56”,5. P. D. 11° 31' 7".2. 1725, - - - - - 14° 13' 54",5. - - - II* 31' 17", 2. t , *\,, ~. CHAP. II.] The obſervations of each STA R claſſed together. 59 3. U R S AE M I N O R I S. - r • Date of Obſ. R. A. obſerved. Z. Diſt. obs". Bar. Ther. Appº P.D. ded". Mag. h / // O ‘A’ // O / // Nov. 28. 1795] 14. 5.20,7 53. o.39 29,52 35 14.26.31 7.8 § P. Jan. 9, 1796 243.7 O-54. 2 I C | 44 42 7 || S. P. 16. 2232 I. I ,89 || 50 $o 7.8 || S. P. 17. 26 O.58 ,85 46 47 7 || S. P. Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An. Var. Mag. h / // // O / // . // Sinc. Tang. Sec. 14. 5.28,6 +o,397 14, 27.38,7 + 17, 9 7 || ,968 3,878 4,095 Date of Obſ. R. A. obſerved. Z. Diff, obs". Bar. Ther.|App P.D. ded". Mag. h / // O / // - O Z // Jan. 17, 1796 || 14, 8, 17 || 58. Io.4I 29,85 46 19.36.47 6 - S. P. June I. 21,4| 18.58.45 235 55 23 7.6 Hence the mean Poſition for Jan. o. 18Oo, ſeems to be, R. A. An. Var. N. P. D. An. Var. Mag. h / // // o / // // Sine. I Tang. Sec, 14. 8.22,9| + 1,681 | I 9.37.4 I,4 + 17,oo 6 || 947 2,806 2,979 4, b U R S AE M I N O R I S. Date of Obſ. R. A. obſerved. Z. Diff obs". Bar. Ther.|App P.D. ded: Mag. ~s *- h / // o / // O / // Jan. 9. 1796 || 14. 9.50,2 so. 4,27,5 29, Io 44 11.30. Io 5 || S. P. II • 5 I SQ 29 , I 2 46 I I 5 S. P. : | Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An. Var. Mag, h 2 // */ O / // // Sine. Tang. Sec. 14. , 9.5 Lo -o,465 I 1.31. 4,7 + 16,93 5 || 989 4,907 || 5,Co3 { - i I 2 6o Particulars concerning each STAR, deduced from other Authors, [Casp, II. *- - sº-i, C A S S I O P E AE H E V E L II 35. Long. 18oo. Lat. Mag. S o / // S o / // o 2 // 7 Ptol. 4 I. I.4.O. O I. 25.56.47. - 47.2C.. O 4 || In extremitate pedis, U1. Beg. 1. 20.46. O | 1. 25.5o.35 47.36. O - 7 Tych. i. 26.39, o | I. 29.25.58 48.54. O 4 || Extrema pedis. Pr. H. I. 26.35. O i. 29.27.5o. 48.52. 6 3 35 Hev. 1. 27.3C. 4. I I. 29.27. I 8 48.55. Q 4 || Extrema pedis. 54. Fl. 1712. I. 27.53.53 | I. 29.26. 9 48.57.31 || 4 || In extremo pede. Not in 1725. | } R. A. . In Time. P. D. Mag. O / // h . 2, o / // 35 Hev. So, 28.29 2. I. 54. 24. IO, 37 4. 54 Fl. 1712. 3O. 59.3C 2. 3.58 24. I. IO 4. - | Not in Flamſteed 1725. Obſerved by him Dec. 5, 1693, and no other time. 35 Hev. brought up to Jan. O. 1800, is, R. A. 2° 12' 41%3. P. D. 23° 36' 34";7. 54, Fl. 1712 º 2° 14′ 46". - - 23° 21' 8”. This, I believe, is a Treble Star of Dr. Herſchel's Catalogue, (I. 34.) N. B. He calls it Fl. 55; but Ptolomei is not 55 of Edit. 1725. *__ —— 36 Hev. § 5 Fl. 1712 Not in 1725. 37 Hev. brought up to Jan. o. 18oo, is, R. A. 54 F). 1712 -*-*- C A S S I O P E AE H E V E L II 36. R, A. O / // 3 I. 37. I 2 32.49.45 ſº-p tºº * In Time. h / // 2. 6.29 2. IO-43 Obſerved by Flamſteed Dec. 5, 1693. P. D. O / // 18.43.36 18.35. 3 2° 18′ 40”. 2° 20' 34". Mag." 5 || Sub Scabello praecedens. P. D. 18° 4' 39". gº * I 8° 4. 59°, char, I IJ The Obſervations of each S T A R claſſed together. 61 ==> r ,--- - - f : CA S S I C P E AE H E V E L II 35. IXate of obſ R.A. obſerved.| Z. Diſt. obs". Bar, Ther. App P.D. ded. Mag| w h / // O /* // O / // * Nov. 28. 1795 2. I 2.28,7| 15. 3.45 29,52 35 23.31.26 5 Jan. 8, 1796 28,3| 5O. 342 || 44 2 I 4. * t | Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. | An. Var. N. P. D. An. Var. Mag. Hi / // // o / // . // Sine. f Tang. Sec. 2. I2:47, I +4,747 | 23.30.23.9 — 16,83 4-5 || 39 I 7 2,299 || 2,597 C A S S I O P E AE H E V E L II 36. Date of obſ, R.A. obſerved z. Diff. obs'. Bar. Ther.App. P.D. ded. Mag. h / . // O / // O / // tº * Pec. 23, 1795 || 2. 18.59,8| co.3o. 7 || 29,83| 44 | 18. 4.58 5 Jan. 8. 1796 58,8 5 3 242 || 44 5. 3 Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. Am. Var. N. P. D. An. Var. |Mag. h A // - // O / // 2. Sine. Tang Sec 2. 19.20,3| + 5,401 | 18. 4. 4,7 — 16,47 5 || >951 3,066 3,224 62 Particulars concerning each STAR, deduced from other Authors. [Char, H. , * ºrersºns 5. a U R S A. M I N. O. R. I S. Long. 18oo. Lat. | Mag. | S o / // S o Z // 9. A // 8 Ptol. 3. I 3. o. o 4, 7, 16.47 7 I. I.O.. O 4 || Circa Urſin informis, U} {3. 4. O. 55. O || 4 - 5.59.35 7 I.45. O 5 He v. 4- 3 3-33 4. 5. O. I O 7 I. 23.24. 6 || Ad Homerum prox. 5 Fl. 17 2. 4. 4. O. 9 || 4 - 5.32.25 7 I.25. 4. 5 || Ante Hum, 2" ſeq. 5 I725. 4. 4. I. 9 || 4- 5.33.25 71.25.2O * - R. A. In Time. l P. D. Mag. - © / // h / // o a // 5 Fl. 1712. 2 I 7. 13.45 14, 28.55 12.56. O 5 5 I725. 2 I 7. I 5. O I 4, 29. O I 2.56.29 4. 5 Fl. 1712. a, brought up to Jan. o, 18oo, is, R. A. 14° 28′ 5 1",8. P. D. 13° 24′ 18”. 5 I725, a, Obſerved by Flamſteed with the Sextant, - Dec. 21, 1681. -- º wº •kº fºe 1.4% 28. 56”,8. * tº 13° 24' 38". with the Mur. Arc, Mar. 13, 1694, called o: ; Ap. Io, Ap. I 1, 1704. $º ch Ap. II.] The obſervations of each STAR clºſed together, * 63 ** * * → - - - - - PF - sº - r– *——º - * - - » • * > -º-º-º-º-º: -º- • -º- s, a U R S E M I No R I S. Date of Obſ. R. A. obſerved. Z. Diſt. obs". Bar. Ther. Appi P.D. ded. Mag. t h / // o / // o / // Dec. 2. 1795 ||14, 28. 2,6 || 51.58.26 29,50 46 || 13.24. 2 4.5 S. P. 23. 43.3 24. ,83 || 44 I I 4.5 || S. P. Jan. 8. 1796 6,3 28 242 || 44 I 3 4 || S. P. - - | | Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An. Var. Mag. h / // // o / // // Sine. Tang. Sec, I4. 28. 7,4 || -o,3Io 13.24.51,5 | + 16,OI 4 || 973 4, 193 4,31° Date of obſ, R.A. obſerved. Z. Diff obs'. Bar. Ther. App *** - - - b / // O / // o / // | Jan. 9. 1796 ||14. 39.42,2 || 48. 2.31 29, 19 || 44 9.28, 9 7 || S. P. * 6. 38,2 37 ,89 5O I 4. 7 || S. P. 17. 42,O 3 I ,85 || 46 8 7 S. P. - l | Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An. War. Mºg. h / // // O / // // Sine. | Tang. Sec. 14, 39.36,3| - 2,074 9.28.58,3 | + I 5,36 7 || 1986 5,966 6,069 | | S *--------ºr-t-...-------- *-*-** *- :------ - - – re. ~ J. ..., **... . . . .é. - , ~~~ ** ‘. . . . . *... 3. **, * * S$#& ... " 64 Particulars concerning each STAR, deduced; *: º, Y. - ^- - - º: 3. * s 3. - .” – - -- 1. –w * , - *----- - -º--- n - xx • - - - ~< * ~ :--y-- ~ : * 24.3° 32 ° g 3. *i. asº. º … . . º.º. - 8, x * - or ------sºrs wrºssrº s-a -º-ºr- * * x-sy '*** y * ...x. *4 * *Y. y - ; : - E---> --> s------------ s--> → - *xr- * wa ºr grº * * **ss . - *. - - * , —r- C E P H E I H E V E L II 47. R. A. •. In Time. - P. D. ~ § Mag. O / // h . 2, S 6 fº 47 Hev. 35.29.30 2. 21.58 12.22.29 7 | Sub pede fin, in faſcia præc. Not obſerved by Flamſteed. This brought up to Jan. o. 1800, is, R. A. 2° 37' 51%. P. D, 11° 45' 26%6. Quaere—Whether this be the ſame Star, "A i | 6. U R S AE M I N O R I S. R. A. In Time. P. D. Mag, o / // h A // O / A/ 6 Fl. 1725 22 I. Io.30 | 1.4. 444. 16.45.30 7 Not in Flamſteed 1712; nor in Hev. Obſerved by Flamſteed Ap. 10, 1704. This brought up to Jan. o. 1800, is, R. A. 14° 45' 2",5. P. D. 17° 13' 10". Char. II.] . . . The overealm ºf each STAR claſſed together. 65 - ^- - -, - == −-ur--ºr- Pr- C E PH E I H E V E L II 47. Date of obſ R. A. obſerved. Z. Diſt. obs". Bar. Ther.|App P.D. ded". Mag. ; ..] h / // o 2 // o z. z. June Io. 1796|| 2. 39.37,6| 49.59.17 | 29,53| 56 I 1.2456 6 || S. P. . . I 5. 36.9 I 2. 37 o 56 | 53 7.6 } S. P. Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. War. N. P. D. An. Var. [Mag. h z ze Z/ o / // y // "- Sine. Tang. Sec. 2. 40. Io,5| +7,329 || II. 23.40,8 || - I 5,36 6 || ,98o 4,960 5,060 - | - - | 6. U R S AE M I N O R I S. Date of Obſ. R. A. obſerved. Z. Diff. obs'. - Bar. Ther. Appº P.D. dedē. Mag.]] - h / // O / // 0 & // Dec. 30. 1795|14. 44.51,2 55.45.14 29.93| 4 || 17.11.13 7.8 || S. P. Jan. 9. 1796 5O22 2 I 2 IO | 44 19 || 7.8 || S. P. Hence the mean Poſition for Jan. o. 18oo, ſeems to be, R. A. An. Var. N. P. D. An. Var. Mag. h / // // o / // Z/ Sine. Tang. Sec. I4. 44.53,8 +o,230 17.12. 4,4 + 15,08 || 7.8 || ,955. *|†, Date of Obſ. R. A. obſerved..! Z. Diſt, obs”. Bar. Ther. Appº P.D. ded". Mag." *... h / // O / // o / // June Io. 1796|| 2: 46.36,6 44.25.58 29,53 56 5.51.25 6 | S. P. I 5. ſ 35,9 5 I ,7o 56 I9 6 || S. P. Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An. War. Mag. - h Z // // - O / // // i Sine. Tang, Sec. 2. 47.31,3 || -- I I,8o3 || 5.5o. I3,4 || - 14,93 6 || 1995 || 9,782 9,833 66 [CHAP. II. Particulars concerning each STAR, deduced from other Authors. 37 Hev. 56 Fl. 1712 Not in 1725. c Ass I o P E E H E V E L II 37. R. A. o f A/ 39. 5-58 39.58.15 –F– trº- In Time. h / 2. 36.24 2- 39-53 // Obſerved by Flamſteed Dec. 5, 1693. * T ===-w--> ==-----→E→ P. D. Mag. || O # // 16.57.47 6 16.51. I 5 5.6 =-------------- Sub Scabcllo ſequens. ==x-r 37 Hev. brought up to Jan. o. 1800, is, R.A. 2° 50' 15”,6. P.D. 16° 22' 37",6. Mag, 6. 56 Fl. - " - - - - - - - - - - 2° 56' 7". - - - 16° 26' 38". - - 5.6. 7. g U R S A. M I No R I S. Long. - 18oo. . Lat. Mig. S o z // S o ż. m o w ł - 6 Ptol. 7 3. I'7.2O. C 4. II.36.47 72.50. O | 2 || Auſtralis ſeq. lateris Dl". |U}. B. 4. 5.25. O || 4. IO-29-35. 73. O. O 6 Tych. 6 4- 7. 16.30 4. Io.23.28 72.5 I.30 2 || Inferior praecm. Pr. H. 4. 7.23.30 4. Io. 16.2O 72.56.40 3 || 6 H. v. 3 4. 8.2 I. 8 || 4. Io. I7.44 72.56.23 2 || Humerus. 6 F). 17 2, 3 4, 8.54.4o 4. Io.26.56 72.58. Io 2 || Clara in Humero. 7 1725. 3 4. 8.55. 8 || 4. Io.27.24 72.58.26 3 || Borea præc. lat. In Flamſteed's Edit. of Ptol, the letters of 3 and n are tranſpoſed. Hev. G Fl. 1712. 3 1725. (3 : Fl. 1725, brought up to Jan. O. 1800, is, R.A. § a Caille - Bradley – Zach - - R. A. O Z // 223. 5.4 I 223. 4.2O 223. 5.30 In Time. h / I4. 52.23 I4. 52. I7 // I4, 52.22 Dbſerved with the Sextant, - Dec. 21, 1681. Mur. Arc, Mar. I 3, 1694; Ap. Io, I I, I704. P. D. Mag. o & // 14.26. 9 2. I 4.35. IO 2. 14.35.2O 3 14° 51' 40",2. 14° 51' 29",7. 14° 51' 48", 2. 14° 51' 27",55. P. D. I 5° 2’ 12",8. - 15° 1' 22",9. • - I 5° I’ 29",9. Mag, 3. - - 3. . º - 3. CHAP. II.] The obſervations of each STA R claſſed together. - -ºº-ºº-ºº----- - ******-- - ---- - - - ---. -- º- º ~ *-**** --- --. - • * > --- - - - - --~~~~ : --- --~~~~ * ~ *- - ----- ~ * - - - - - - - - - - - - -- ~~~...~ -- a----- - - - - -- *-r--- ~~sºe. **-*-x-xx...:**_*- c Ass I o P E E H E V E L II 37. Date of Obſ. R. A. obſerved, Z. Diſt. obs”. Bar. Ther. |App P.D. ded". Mag. h / // © / // : * © /* // Dec. 3o. 1795 2. So. 14.2 22.11.16 || 29,93 || 41 | 16.23.47 | 6.5 Jan. 16, 1796 I 322 || 22 ,89 || 5o 4. I 6 Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. f Am. Var. N. P. D. | An. Var. |Mag. h / // // o a zz // ſ Sine. Tang. Sec. 2. 50.37.4 +6,140 | 16.22.55, I – 14,77 6.5 || 959 || 3,492 || 3,546 7. g U R S AE M I N O R I S. Date of Obſ. R.A. obſerved. Z. Diſt. obsº. Bar. Ther.|App P.D. ded". Mag. If - h / // O A z. : - o / // June 10, 1794|14. 51.27,6] 23:35.13 29,69| 54 || 14.59.49 || 2.3 || Face W. I I. 27,8 7 ,66 53 | 55 3.2 || - - W. 13. 3I I 7 ,62 6o 56 3 + - E. f4. 3 Ix2. 7 ,78 59 | 55 3 || 15. 3 I-5 8 ,89 53 55 || 3 || - k . Dec. 3o. 1795 || - - - , | 53.35. To 393 || 4 || | T 5. I. 3 3 || S. P. Jan. 17. 1796 2435 I6,5 ,85 || 46 7 3 || S. P. May 31. 31,6] 23:34.25 32O || 52 O.38 3 | Quete thi. - | Thoſe Obſervations which were made before June 25, 1794, when an Error ariſing from the touching of the foot of the Axis-Level was at its greateſt, are ſet down here, and a Mean calculated from them, in order to ſhew the compariſon, and how far thoſe Obſervations might be of uſe, if wanted, though they have been rejećted in this work. Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. - N. P. D. • An. Var. Mag. h / // // o z ze From 1794 - |14, 51.24,2| - - - | 15. 1.33,8 Jan. 1796 I4, 5 I.2459 - - - I 5. H. 52,7 May - - - ||14, 51.26,2| - - - || 15. o.44.9 | Quare. 3,724 Mean - - - ||14. 51.25,5| –o,320 15. 1.43 + 14,69 3 || 966 Sine. Tang. | Sec. 3,856 68 Particular concerning each STAR, deduced from other Authors. [Char II. sº- - --~~E-------------> --> - * D R A C O N IS H E V E L I I Io. R. A. In Time. P. D. Mag. o 2 zº h / // o / // Io Hev. 223.11.22 || 14, 52.46 22.40.20 | 6 || caput piecedens Auſtr. Not in Flamſteed's Catalogue. - This brought up to Jan. o. 1800, is, R. A. 14° 55' 14".7. P. D. 23° 13' 59°, C E P H E I H E V E L II 48. R. A. In Time. P. D. Mag. O A A/ h / A/ Q / // 48 Hey. 39.20.45 2. 37.23 I 3.49.5 I 6 || Sub faſcia ſequens. Not in Flamſteed's Catalogue. This brought up to Jan. o. 1800, is, R. A. 2° 53° 43',9. P. D. 13° 16' 18",3. —r 8. U R S AE M I N O R I S. Not in Hevelius's Catalogue. .* R. A. InTime. P. D. - Mag. O / // h / // O A // 8 Fl. 1725 224.47. O I4. 59. 8 13. 2.20 6 Obſerved by Flamſteed Ap. 10, 1704. . . This brought up to Jan. o. 1800, is, R.A. 14' 57 27%2. P. D. 13° 28′ 32”,2. *- sº- CHAP. II.] The Obſervations of each STA R claſſed together. 69 D R A C O N IS H E V E L I I Io. Date of Obſ. R. A. obſerved. z. Diff. obs'. Bar. Ther.|App. P.D. ded. Mag. h / .2/. O / // - o / // . Jan. 16. 1796 ||14. 54.20,2 61.49. 18. 29,89 5o 23.15.38 6.7 || S. P. I7. 2O,5 I4. ,85 46 33 || 6 S. P. | Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. War. N. P. D. An. War. |Mag. || h / // // • z z. // Sine. Tang. Sec. 14. 54.25,5| +o,926 23.16.21,8 + 14,53 6 || ,918 2,325 | 2,53 I C E P H E I H E V E L I I- 48. Date of Obſ. |R. A. obſerved. Z. Diſt. obs". Bar. Ther. Appt P.D. ded. Mag. - h / // O / // O / // June 4, 1796 || 2. 54.57,2 51.36.43 || 29,52 53 13. 2.27 6 S. P. 9. 57.27 43 365 55 28 || 6 || S. P. Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. War. N. P. D. An var. Mag. h / // // o / // // Sine. Tang. Seg. 2. 54,28,8 +7,057 | 13. I. I 8,8 - I4,48 6 || >974 4,325 || 4,489 Theſe Obſervations differ conſiderably from Hevelius ; yet I believe it is the ſame Star. 8. U R S AE M I N O R I S. I have made no Obſervation of this Star. -º-y- -ºr- 7o Particulars concerning each STAR, deduced from other Authors, [Char. II. *-wº 9. U R S AE M I N O R I S. Not in Hevelius. R. A. In Time. P. D. Mag. || O / # h * // o / // 9 Fl. 1725 225. 9. O 15. o.36 I7. 2. I 5 7 Not in 1712. - g - Obſerved Ap. Io and 11, 1704. * This brought up to Jan. o. 18oo, is, R. A. 15” o' 37",6. P. D. 17° 28′ 10”, 4. -Yº s sº-rºr ºr- *—- .*- C A M E L O PA R D A L I H E V E L I I I. * R. A. In Time. P. D. Mag. o f Z/ h A // % O / /* & I Hey. 42,39. 25 2. 50.38 25 .4o.40 5 In edućtione Caudae Ima, Not in Flamſteed's Catalogue. This of Hevelius brought up to Jan. o. 18oo, is, R. A. 3° 2' 16",o. P. D. 25° 7' 18". CHAP. II.] The Obſervations of each S T A R claſſed together. 7 t . 9. U R S A. M I N O R I S. Date of Obſ. R. A. obſerved z. Diff. obs'. Bar. Ther. App P.D.ded.|Mag| * h / // o / // - O / // - June 9. 1796 || 15. o. 21,2| 21. 9.17 | 29,65 55 17.25.48 || 7.8 IO. 2 I, I 9. O 353 56 26. 6 7 2 I • 2O,8 I 244 54. 5 7 Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An. Var. . . Mag. *- h / // // o / // A/ Sine. Tang. Sec. I 5. O. 18,3| +o,06O 17.27. I 5,4 + 14, 18 7 || >954 3, 181 3,334 Date of Obſ. | R. A. obſerved. Z. Diſt. obs”. Bar. Ther. Appº P. D. ded. Mag. h / // o / // o / // Dec. 30. 1795 3. 2. I5,7 | 34.32.12 || 29,93 41 || 4, 2.12 6 June Io. 1796 - - - || 42.37.18 ,53 56 2.42. 6 || S. P. I4. 1.53,8 16 ,59 56 4o 6.7 || S. P. I 5. 5239 16 ,7o 56 4. I 6 S. P. Hence the mean Poſition for Jan. o. 18oo, ſeems to be, R. A. An. War. N. P. D. An. Var. Mag. h / // // o £ A/ A/ Sine. Tang. Sec. 3, 3.12.9 + 16,683 || 4, 1.33,4 – 13,98 || 6 || 997 ||14,212 ||14,247 C A M E L O P A R D A L I H E V E L I I I. Date of Obſ. R. A. obſerved. Z. Diff. obs'. Bar. Ther. App P.D. ded". Mag| h / // o / // o / // Jan. 8, 1793 || 3: 1.59.6 | 13.27.59 29,65| 38. 25. 7.14 6.5 28. 58,4 28. 6 ,82 || 4 I 7 6 Feb. 3. 58 7 , IO 38 5 June 25, 1796 || - - - 63.40.26 380 63 6.5 I 5 || S. P. t - | Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. Am. Var. N. P. D. An. Var. |Mag. : h / // A/ o f a * . . " // Sine. Tang. Sec. 3. 2.32,5 | + 5,084 || 25. 5.37,o - I4, 18 5 || >996 || 2,135 | 2,358 * ~ *-*—2 *—F-º-º-º- 72 Particulars concerning each STAR, deduced from other Authors. ICHAP. II. 10. U R S E M I N O R I S. R. A. In Time. | P. D. Mag. o / // h / // O / // 1o Fl. 1725 226.57. O 15. 7.48 14.56.1o 7 Not in 1712. | | | | || Obſerved Ap. 10, 1704. This brought up to Jan. o. 1800, is, R. A. 15” 6’ 49",3. P. D. 15° 11’ 19°, 5. * 11. U R SAE M I N OR IS ; called by LA CAILLE y 1. Not in Hevelius's Catalogue; nor in Flamſteed's Edit. 1712. R. A. In Time. P. D. Mag. O A WA h / // © / // 11 Fl. 1725 229.26. O I 5. I 7,44 I 7, 3.5o 5 Obſerved by Flamſteed Ap. Io and 11, 1704. - This brought up to Jan. o. 1800, is, R. A. 15° 17' 22",3. P. D. 17° 27' 45%6. Mag, 5. Called by La Caille y 1. - - - - - 15° 17' 20",8. - - 17° 27' 56",6. - - 4. Between this Star and y (or y 2.) there is an imperfeót Obſervation in Flamſteed, of a Star 36 or 37 South of them; which I believe is the Treble Star of Dr. Herſchel's Cat. (V. 86.) sºrºrº- as ~17-v * -º- CHAP. II.] The Obſervations of each S T A R claſſed together. 73 Io. U R S AE M I N C R I S. Date of Oºf R.A. obſerved z Diſ. obº. Bar. Ther. App P.D. de Magi - h ºf Z/ o / // O / // | Dec. 30, 1795 | 15. 6.19,2 53.54. 2 29,93 41 I Š. I 9.55 7.8 S. P. Jan. 16. 1796 2 C32 I 7 ,59 5O 20. 9 8 : S. P. June 14. 25,8 || 23.15.26 ,59 5% I 9. 7 7.8 | I 5. 26,9 28 ,7o 56 35 | 8 | | & | ! | Hence the mean Poſition for Jan. o. 1800, ſeems to be, | R. A. An. Var. N. P. D. An. Var. Mag. h / // // o / /* // | Sir; e. Targ. S •c. | "J" as (TJ 15. 6.20,6 – O,471 15.20.44,O | + 1 3,77 | 7.8 || 965 3,635 | 3,8 9 - | | | - _º | • ; Date of Obſ. R. A. obſervedi Z. Diff. obs'. Bar. Ther.|App. P.D. ded Mag. h / // o / // O / // June 9. 1796 || 15. 8.41,2 | 17. 8.7 29,65 5; 21.26.52 || 6.7 IC). 4o,6 I6 353 56 54 7 Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An var. N. P. D. An. Var. Mag. h / // // o / // Z/ Sine. Tang. Sec. 15, 8.40,4| +o,574. 21.27. 56,6 + I 3,67 7 º 2,543 2,732 II. U R S AE M I N OR IS ; called by LA CAILLE y i. Date of Obſ, R. A. obſerved. Z. Diſt, obº. Bar. Ther. App' P. D. deid Mag h / // O A /? O / // June 27, 1794 || 5, 17.23,6|| 2 i. 9.37 30,00 53 || 17, 25.28 6.5 - - Face W. Dec. 30. I795 18,2 56. O.30 29,93 || 4 | 26.23 5 i S. P. - - E. June 14, 1796 26, 3 || 2 I. 9. O ,59 || 56 5 5 I 5. 25.9 9. O_ ,7O | 56 5 5 Hence the mean Poſition for Jan. o. 1802, ſeems to be, R. A. An Var. N. P. D. Aa. Var. M * h / ?/ // • / // e // Sºne fang. Sec. I 5, 17.22,2 -o, I 60 17.27. 7,6 + 1 3,05 5 || 934 3, 18 3,334 -*— | I. -ā- 74 Particulars concerning each STAR, deduced from other Authors, [CHAP. It, 3. ¥ *-- ºr ºs º-, -ºxº- —r---> —r. -------~~~-v-wi-r-r----- r—x---- * * * * * * - 2 7x ... -------------> - - —w-r--r—r x -- *. - -w •ºr - r - ¥ —r- t * - - * g >-ra- —-ºrg ~-wr—-3- rº-; * rea ºg x=-& xx-x-E- -º- ºr -rare.-- ºr —r------------------—r-s-s--- *I*-, r-y zz-ºr-tº-r-cºr—r- 3. tº . *- —a - - 13 y U R SAE MIN OR IS; called by La Caille y 2. J.ong. Long. 1800. ſ Lat. Mag. S O /* // : S. O / // O. £ /A: 4. Ptol. 'y 2. 29.2O. O || 3. 23.36.47 75.4O. O 4 || Auſtr. praec. lateris DI’. U 1. B. 3. I7. I 3. O 3. 22. I7.35 75.36. O 7 Tych. 'y 4. 14.4 I. O 4. I7-27.58 7.5.23. 3O 3 || Praec. in [].. inf. Pr. H. 4. I 5.32.4C 4, 18.25.3O 75.12.24 2. 7 Hev. y 4. 16.36.31 || 4, 18.33. 7 75. I4.30 3 || In Pećtore. 7 F1, 1712. Y 4. 17. I 1.56 4, 18.44, 12 75. I 3. I 5 3 || In Pećt. [] . Auſtra I 3 1725. Y. 4. 17.10.28 4, 18.42.44 75.13. I 3 || Auſt, præc. lat. Clº. ..:- R. A. F- In Time. P. D. . . Mag. O /. // h 2 /? - O / /? 7 Hev. y 23 O. 34.40. I 5. 22. Io 16.56.47 3 | 7 F1. 1712. y | 230.24.35 I 5. 2 .38 17. 4.45 3 I 3 1725. Y } 230-24. O 15. 21.36 I7 - 4.2O 3 Obſerved by Flamſteed with the Sextant, - Dec. 21, 1681. - Mur. Arc, Mar. I 3, 1694; Ap. Io, Ap, 1 1, 1704. FI. 1725, brought up to Jan. o. 1800, is, R.A. 15° 21' 9",2. P.D. 17° 27' 48", 1. Mag, 3- La Caille (which he calls y 2.) - - - - 15° 21' 8",6. - - 17° 27' 13", 1. - - 3. Zach - - - - - - - - - - - - 15° 21' 11",8. char. II.] - The Obſervations of each S T A R claſſed together. . 75 - - T - s - - ------, → ——w. ==– v - - - - - - - - - - - - - - - - Date of obſ, R. A. obſerved. Z. Diff. obs". Bar. Ther.App. P.D. ded. Mag | i h A // o / // © / // Jan. 9. 1796|| 5. 19. 17,2| 53.47.41 29, Io 44 I 5.13.31 7 || S. P. June 19. 24, I 23.21.54 345 64 io || 7.8 Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An. War. Mag h . . // // o / // // Sine. Tang. Sec. - 5. 19.19,7| -o, 14o | I 5.14, 13,5 | + 12, 16 7 ,965 3,671 3,871 13. y U R S AE M I N OR IS ; called by LA CAILLE y 2. Date of Obſ. | R. A. obſerved. Z Diſt. obs". Bar. Ther. App P.D. ded". Mag. h / // O / // o Z ºf June 27, 1794 || 5. 21.1 1,6] 2 i. 9.24 30,00 58 17.25.41 4 || Face W. July 7. Io,6 22 || 29,74 || 69 4-O 3 - - E. 8. II 24. Dec. 3o. 1795 6,2 - - - as aim * * * * * * 3 Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An. Var. Mag h / // - zz O / // // Sine. Tang. Sec. 15. 21. 8,4 -o, 188 17.27. 7,7 | + 12,89 || 3 || 3954 || 3, 181 | 3,334 H P. L 2. 76 Particular, concerning each STAR, deduced from other. Authors. [CHAP. II, -s K. wºr--ºr r-R *-ºs-y- * -- *r-º- x •r-y- I-r-z-y g = * y -v-sº -: w rº ~ ~3– *- ww. .# -zº -ā- * – a sº -x— T CAME LOP A R D A LI H E V E LII 5. R. A. In Time. P. D. Mag. o / /2. h z. z 9 / // 5 Hey. 48.27.20 3. I 5, 9 I9.48.27 5 || Inter tergum & primam Caudae. Not obſerved by Flamſteed. This brought up to Jan. o. 1800, is, R. A. 3° 28′ 58%9. P. D. 19° 18′ 53",4. \ C A M E L O P A R D A L I H E V E L II 7. R. A. In Time. P. D. Mag. || O / // h / // O / // - * | 7 Hey. 49.45. 7 3. 9. O 25.34.56 5 In Coxa praecedens. i | Not in Flamſteed's Catalogue. This brought up to Jan. O. 1800, is, R. A. 3° 31' 8",7. P. D. 25° 5' 53”, i. CHAP. II.] The Obſervations of each STA R claſſed together. **— $ Date of Obſ. Dec. 30. I795 9. 1796. Jan. June 19. R. A. obſerved. h / // 3, 26.55.2 53.5 5 I | Z. Diſt. obs". O / //" I5. 8. O 7.54 62. 1.2 I →- -r Bar. Ther. 29,93 || 4 I , I O || 44 ,4o 6o Appt P.D. ded". Mag. // Hence the mean Poſition for Jan. o. 1890, ſeems to be, R. A. An. Var. N. P. D. An. Var. Šíag h / A/ A/ O / //* // Sine T.,ng Sec 3. 27. I 5,4| + 5,485 23.26.35.2 — I 2,40 6 || 9 | 7 || 2,304 235 E 2 C A. M. E. L.O P A R D A L I H E V E L II 5. Date cf Obſ. R. A. obſerved. Z. Diff. obs". Bar. Ther.|Appº P.D. ded". Mag. h / // O / // O / // Dec. 22. 1795 3, 29. 5,5 | 19.16. I 5 29,35 59 | 19.18.52 5 Jan. 17. I796 6 I 9 ,85 46 48 5 June 25. 2,5 57.53. I 8 ,89 63 2 5. S. P. 29. |. 323 I 8. ,92 6o 2. 5 S. P. | Hence the mean Poſition for Jan. o. 1850, ſeems to be, R. A. An. Var. N. P. i.). An. War. Mag, i. h / // // O / // // Sine. Tang. | S & C. 3. 29.28,9| +6,083 I 9. I 8. I 3,3 – 12,27 5 # 9- * 2, S55 3,025 C A M E L O P A R D A L I H E V E L I I 7. Date of Obſ. R. A. obſerved. Z. Diſt. obs". Bar. Ther. 'App. P. D. de d. Ma- . h z. z/ o / // | O / // . } Dec. 30, 1795 || 3. 31. 1,2 13.28. O | 29,93 || 4 || || 25. 7. I 3 5 : Jan. 9, 1796 Q2.5 I. 3.10 || 44 I 2 5 - Hence the mean Poſition for Jan. o. 1 Soo, ſeems to be, R. A. An, Var, N. P. D. A. Var, lºng. h / // */ o / // // } c -T-- Q Sº Yo | l § . S 6°C. 3. 31.21,4| + 5,337 || 25. 6.30,4 - 2,28 5 | 995 2 sº 2,356 78 Particulars concerning each STAR, deduced from other Authors, [CHAP. II. == C E P H E I H E V E L I I 49. R. A. In Time. P. D. Mag. O / // h 2 // o f Z/ 49 He v. 49. I • 8 3. I 6. 4. IO. 23. I 2 6 Sub pede ſino in faſcia med. Not in Flamſteed's Catalogue. This brought up to Jan. o. 1800, is, R. A. 3' 36' 1",6. P. D. 9° 54′ i 1",3. 15. S U R S AE M I N OR I S. Not in Hevelius. R. A. In Time. P. D. Mag. | O / // h / // O / z. 8 F1. 1712. 3. 2.35: 24.5 O I 5. 4. I. 39 II. 39.3O 6 I 5 1725. § 235. 17.3O I 5. 4 I. IO II, 49.59 5 Obſerved with the Sextant, - Dec. 21, 1681. Mur. Arc, Ap. Io, 1704. This of 1725, brought up to Jan, O. 1800, is, R. A. I 5° 37' 22", 1. P. D. 12° 1 1/ o',7. —r- CHAP. II.] . **, The Obſervations of each STAR claſſed together. 79 - 3. 37.43,6| + I 5,21 5. O. 16,4 — I I, 2 I 7 C E P H E I H E V E L I I 49. Date of Obſ. R.A. obſerved. Z. Diff. obs". Bar. Ther.|App P.D. ded. Mag. h . 2, o z º. o / // sº Dec. 22. 1795 3. 36.48,5 28.4 I. I.3 29,35 | 5o 9.53.43 5 39. 47, 2 23 293 || 4 I 3? 6 Jan. 9, 1796 46,2. 19 , Io 44 37 6.5 Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. . An. Var. N. P. D. An. War. Mag, | h / // /* o A // A/ Sige. Targ. Sec. 3. 37.2O,8 -H 9,302 9.52. 59,4 - I I,7O 5 || ,985 5,740 5,826 i 15. S U R S AE M I N OR I S. ſ f ſ Date of Cbſ. R. A. obſerved. Z. Diff. obs". Bar. Ther. App P.D. deda. Mag. h / - // O. / // |- O / // | Jan. 17. 1796||15. 37.43 || 50.33.2 I 29,85 46 | I 1.59. 4 5 | S. P. june 25. 5o,2 25.36.29 ,8o 63 58.3O 4 29- - 5 I: 3 28 392 || 6o 3O 5 k ^. l Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An. Var. Mag. h /. 2. // O / // A/ Sine. Tang. Sec. 15. 37.39,4 || – I,978 II.59. 29.6 + 1 1,64 4.5 ,978 || 4,7c3 | 4,812 Date of obſ, R. A. obſerved. Z. Diff, obs'. Bar. Ther.App. P.D. desºlvig h Æ //- O A // O 2. // June 19, 1796|| - - - || 43.35.46 29.40 6o 5. I. 12 6 S. P. 2 I • 3. 36.33,8 53 244 54 I 9. 7 S. P. Hence the mean Poſition for Jan. o. 1800, ſeems to be, | R. A. An. Var. N. P. D. An. Var. Mag || H / //- // o / // - Ay’ Sine. Tang. I sce. 9996 || 1,382 || 1 1,416 8o. concerning each STAR, deduced from other Authors. [c Har, H. Particulars - :- —T----. 7 z-z-----> - --------—w *—---—w −-- y - —r- y - - - ---rº- * * * -- - -* CHAP. II.] The Obſervations of each S T A R claſſed together. 8 I pr 2.Tº wº---- - *** * y —º- Date of Obſ. R. A. obſerved. Z. Diſt. obs”. Bar. Ther. Appº P.D. ded". Mag. | * h Z // O / // O; / // June 21, 1796 || 3: 42.26,8|45. 19. 4 || 29,44 || 54 6.44:33 6 S. P. 25. 28, 2 5 ,8o 63 34. 6 S. P. Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. War. N. P. D. An. Var. [Mag. * h 2 // y/ O / // // Sine. Tang. Sec. 3. 43.33,2| + 12,445 6.43.37,2 – 1 1,25 || 6 || >993 8,478 8,536 Date of obſ, R. A. obſerved. z. Dit, obº. Bar. Ther. App P.D.ded. Mag. h Ž // o / // o / // June 25, 1794. 3. 44, 8 || 48,36.53 29,58 57 | Io. 2.29 || 7.6 || S. P. . 27. 754. 5 I :: 3O,Oo 58 27 7 || S. P. Face W. 29. 8,6 52 29,89 || 64 27 7 S. P. - - E. Hence the mean Poſition for Jan. o. 18oo, ſeems to be, R. A. An. Var. N. P. D. An. Var. Mag. h z // // O /* // PA Sine. Tang. Sec. 3. 45. 557 || --9,355 | 1Q. I. 457 | – I I, 16 || 7 || ,984 5,661 | 5,749 Date of obſ, R. A. obſerved. z. Diff. obº. Bar. Ther. App P.D. ded". Mag. h / /? O / // o º // June 19, 1796 || 3. 46.26 45.46.36 29,40 6o 7, 12. 6 6.7 || S. P. 2 I. 3O33 4O > 44 54 IO 6.7 S. P. 25. 2932 38 ,8o | 63 8 6.7 S. P. Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. Am. Var. . N. P. D. An. Var. Mag. h / // // o / // // Sine. I Tang. Sec. 3. 47.22 + I I,94o 7. II. I 3,6 | – Io,98 || 6.7 || ,992 || 7,929 7,995 M § 2, Particulars concerning each S T A R, deduced from other Authors. [CHAP. II. 16. U R S AE M I N OR I S. Long. Long. 1890. Lat Mag. S o / // | S o / // o / // *. 7 Ptol. § 3. 26. Io, o 4. 20.26.47 74.50. O 2 || Bor. ſeq., lat. [I] . U}. Beigh 4. I 3.55. O || 4, 18.59.35 75. 9. O -- 4 Tych. § 3. 2 I-29. O | 3. 24. I 5.58 75. O. O 4 || Sup, ſeq., in []. Pr. H. 3. 2 I. 3O. O 3. 24.22.50 75. 2.3O 4 8 Hey. § 3. 22.32.2 I 3. 24.28.57 75. 4.3O 4 || In Dorſo. 9 Fl. 1712. § 3. 23. 2. to 3. 24.34.26 75. 5.45 4-5 . 16 I 725. S 3, 23. 2.25 | 3• 24 34.4 I 75. 6.5o 4 || Borº ſº, at E. | There ſeems to be an Error in the Signs in Ptol, and Ul. Beigh. 8 Hey. 9 Fl. 1 7 I 2 I6 I 725 Obſerved by Flamſteed with the Sextant, - Dec. Mur. Arc, Ap. Ç R. A. o z // 239.26.40 239. 4, 20 239, 4-3C Pn Time. h / // I 5, 57.47 15. 56.17 I 5. 56.18 P. D. O / // I I. I. I. 5 O II. I 7.35 I 1. I 7.4O 21, 1681. Mag. H. IC, Ap. I I, 1764. This of Flamſteed 1725, brought up to Jan. o. 1800, is, R. A. I 5° 5'1' 35",9. P. D. I. 1" 36' 52*,2, -º-º-º-r- The Obſervations ºf each S T A R claſſed together. 16. U R S A. M I N OR I S. Date of Obſ. R. A. obſerved. Z. Diſt. chs". Bar. Ther. Appº P.D. ded". Mag. h / // O / // O / // June 25, 1794 || 5. 51.48 27. o.30 29,58| 57 | I I.34.29 4 : 26. 47, I 28 ,65 | 68 29 4. 27. 4734 33 : 3O,Oo 58 26 4. Face W. July 7. * 26 29,74 | 66 33. | 5.4 || - - E. Hence the mean Poſition for Jan. o. 1800, ſeems to be, * R. A. An. Var. .* N. P. D. An. Var. Mag. h / // // O / // // Sine. Tang. Sec. I5. 51.28,8 - 2,444 II.35.48,2 + Io,66 4 || 979| 4,872 4,973 Date of Obſ. R. A. obſerved. Z. Diff. obs". Bar. Ther. App P.D.ded". Mag. h / // O y // • O ~ / // June 29, 1794 | 3. 52. O,6 || 48.17. I I 29,87| 59 9.42.47 || 7.6 || S. P. 3O. O25 I I ,68 59 47 6 S. P. July 1. o,6 9 582 | 64 45 6 S. P. June 28, 1797 26,9 16.29,5 >59 || 59 4,5 6.7 || S. P. Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An. Var. Mag. h * // // Q / // y/ Sine. Tang. Sec. 3. 53, o,7| +9,725 9.41.28,O | – Io,54. 6 || >986 5,855 | 5,949 84 Particulars concerning each STAR, deduced from other Authors, [CHAP. II, —r- -> - +--- e – ~7 —r- - -—r ---> • T -º- rv-z- y --~~r Pi—w-r-Twº- 17. U R S AE M I N O R I S. * Not in Hevelius’s Catalogue. R. A. In Time. P. D. Ma O z // 2 h / // O / // S" 17 Fl. 1725 24O.5 I.3O 16. 3.26 I 3-33.55 7 Not in Edit., 1712. Obſerved by Flamſteed Ap, Io, 1704. This brought up to Jan. o. 1800, is, R. A. 16% of 19",o. P. D. i3° 52' I”,8. CHAP. II.] The Obſervations of each S T A R claſſed together. *. 85 Tºr Date of Obſ. R. A. obſerved. Z. Diſt, obs". Bar. Ther. Appº P. D. ded”, Mag. h / // O / // o Z // June 21. 1796 || 3. 54.53,8 53. o. 1 29,44|| 54 || 14.25.48 7 || S. P. 25. 5.532. 3 ,8o 63 5O 7 S. P. y Hence the mean Poſition for Jan. c. 1800, ſeems to be, R. A. An. War. N. P. D. An. Var. Mag. h / // // ' {} / // // Sine Tang Sec 3. 55.27,o +7,522 || 14.24,56,8 - Io,37 7 || >969 3,899 |. 4,016 17. U R S AE M I N O R I S. Date of Obſ. R. A. obſerved. Z. Diſt. obs". Bar. Ther. Appt P.D. ded. Mag. : h / // O / // O / // June 25, 1794 | 16. o. II,5 24.44.55 29,58 57 | 13.5o. 6 7 | . -> 27. 9,6 5 I 3O,OO | 58 I I 7 || Face W. July 7. 9,6 55 * 66 7 7 j - - E. i Hence the mean Poſition for jan. o. 1800, ſeems to be, | R. A. An. Var. N. P. D. An. Var. |Mag. h A // // O / // Z/ | Sinc. Tang. Sec. 15. 59.56, I | – 1,621 13.51.24,O | + 10,02 7 397 I 4,O54 || 4, 175 | * *- l | Date of Obſ. R. A. obſerved Z. Diff. obs". Bar. Ther. App P.D. deja. Mag. h . , // O / // O A &A Jan. 17, 1796|| 16. 2. o 43. 6.56 29,85| 46 4.32.23 || 7.8 || S. P. June 3o. 1797 I. 8 34. 2.49 ,7 I 6o I 6.7 - July 2. - I 2 | 4.5 368 || 6 I 4- 7, 8 || R. A. moſt ſatisſa Story. \ ~. | Hence the mean Poſition for Jan. o. i 8Co, ſeems to be, R. A. An. Var. N. P. D, An. Var. Mino. h / // // O A // AA Sine Tang. Sec, 16. I .22,7 — I I,480 4-32. SO, 5 + 1 o, º 2 7 s997 1 2257. I 2,614 86 Particulars cºncerning each STAR, deduced from other Authors. [CHAP. H. ºr F - * ++ º - =-ºr- -- CAME LO PA R D A L I H EV E L II 13. R. A. In Time. . . P. D. Mag.] O / // h A // O / f/ - 13 Hev. 57.4O.32 3. 50,42 25.44. O 6 | In cº-ºwn. Not obſerved by Flamſteed. This brought up to Jan. o. 1800, is, R. A. 4 3 22".5. P. D. 25° 15' 12",6. .CHAP. II.] 87 The Obſervations of each STA R claſſed together. Date of Obſ. June 3o. 1794 June 28. 1797 29- C AME LO PA R D A L I H E V E LII 13. R. A. obſerved. Z. Diſt, obs". Bar. Ther. Appº P.D. dedē. Mag. h / // o / // O / // 4, 1.26 63.57. I 29,63| 59 || 25.23.28 6 4234 56.18 259 59 22.44 || 6.5 42 23 259 58 49 6 | Hence the mean Poſition for Jan. o. 1800, ſeems to be, ; ; º h / // // O / // // 4. 2. o,25 | + 5,507 || 25.22. 8,7 | – Io,02 6 Date of Obſ. R. A. An. Var. N. P. D. An. Var. Mag. R. A. obſerved. Z. Diſt. obsd. Bar. Ther. Appº P. D. ded" |Mag. - Sine. Tang. Sec. | 29O3 2, IOS 23,333 } l —t h / // o / // O / // July 1. 1794 4. 9.51,6 56.30.58 29,82 64 17.56.55 6.7 || S. P. 4. 52 3 I. I 393 || 67 58 6.7 || S. P. Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An. Var. |Mag. A / // Ay O / // / Sine. Tang. – Sec. 4. Io. 33.3 || --6,733 17.55.46,9 || – 9,26 * 595 | | 32C92 || 3,249 Date of Obſ. R. A. obſervedl Z. Diff. obs'. I Bar. Ther. |Ap t P.D. dega'ſ M ag. - b / // - o / // O / // Jan. 24, 1796|16. Io. 26,7 || 51.14.32 29, 17 | 45 || 12.40. 16 6.7 || S. P. June 28. 1797 IO.35 | 25, 54.47 359 59 I 3 || 6.7 29. 37. . . 4-7 ,50 58 I 3 3O. 35 49 ,71 6o I 1 || 6.7 - Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An. Var. Mag. h / // // w O / A/ // . Sine T S 16. Io.33,8 – 2,202 || 1 2.46.49,0 ~9, 6.7 || 976 || 4,448 || 4,559 ‘. . . . . ... * * *s 88 Particulars concerning each STA R, deduced from other Authors. [CHAP. II. —º--º-º- —-assº --- & * A * *— * sº- 19, U R S A. M I N O R I S. Not in Hevelius's Catalogue. w a Nor in Flamſteed 17 I 2. - R. A. In Time. P. D. Mag. || || * O / // h / // o / // 19 Fl. 1725 245. 8. o 16. 20.32 - 13.22.30 5 Obſerved by Flamſteed Ap. Io and 11, 1704. - This brought up to Jan. c. 1800, is, R. A. rô” 16' 55",6. P. D, 13° 38' 13". Chap. II.] ºhe obſervations of each STAR clºſed together. N -º-º: sº-- * • *- : * * 2&s. ...~~ … • *~~~e?… r tº: ~ *…*- :- 4 - 4A-º-º-º: , ººº-ºº: ... … ººm-- rºº-ºººººººº- & 3 º' -- ******* * * *.*~ 4-ºxº~...~- - -, -º-º:2-x Date of obſ, R.A. obſerved. z. Diff ob." | Bar. Ther. App P.D.ded Mag. • h / // • z za • , , June 9. 1796|| 4, 12.22,2| 27.48. 8 29,08 || 43 | Io.46.49 7.8 17. 22 I 2 ,85 || 46 45 7 Hence the mean Poſition for Jan. O. 18oo, ſeems to be, R. A. An. War. N. P. D. An. War. Mag. h Z // // O / // // Sine. Tang. See. 4. 12.56,5 +9,339 || Io.46.18,4 –9, Io 7 || >982 5,257 5,351 Date of Obſ. R.A. obſerved. Z. Diff. obs'. Bar. Ther. App P.D. ded. Mag. - * h f y/ Q y A/ O / A/ July 2. 1797 |16. I 5.19 32.45.47 29,68 || 6 || || 5.49. 5 || 7.8 3• 22. 43 337 59 9 7.8 Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. Am. Var. N. P. D. An. Var. Mag. h A // 2, O / // // Sine. Tang. Sec. t |16. I4.45,9| —8,666 5.49.45x I +9, Io 7.8 || 995 || 9,795 || 9,846 *- 19. U R S AE M I N O R I S. Date of Obſ. R. A. obſerved. z. Diff. obs'. Bar. Ther. Apps P.D. ded". Mag. f h y // O * // O y // June 29, 1797 16. 16.56 24.58. 6 || 29,5o 58 || 13.36.55 6 3O. 55 5 ,71 6o 56 6.7 Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. War. N. P. D. An. Var. |Mag. h A // // o / // | // * Sine. Tang, Sec. 16. 16.46,o - 1,962 | 13.37.30,2 +8,79 6 || ,972 4,128 || 4,247 90 Particulars concerning each STAR, deduced from other Authors, [Char. II, –––H– z-tº- – 20. U R S A. M I N O R I S. R. A. In Time. P. D. Mag. O / // h / // o / // , 20 Fl. 1725 245. I 5.3O 16. 21. 2 14, 3, o | 6 Obſerved Ap. Io, Ap. I I, 1704. This brought up to Jan. o. 1800, is, R.A. 16° 17' 52%5. P. D. 14° 18' 26",2, CEPH E I H E V E L II 50. perhaps : but Quaere. R. A. In Time. P. D. Mag. o / // h A // G ſº AA - $o Hev. 57.5 I.4. I 3. 5 I. 27 9.4. I-24 6 || Sub pede fin, in faſcia ſeq. Not obſerved by Flamſteed. - This brought up to Jan. o. 18oo, is, R. A. 4° 14′ 32",5. P. D. 9° 18′ 32",5. PHence it may be doubted whether this is the ſame Star. CHAP. II.] - The obſervations of each STAR claſſed together. 9 : 2O. U R S AE M I N O R 1 S. Date of Obſ, R. A. obſerved. Z. Diff, obs, Bar. Ther. Appº P.D. ded". Mag. h z 2, o " .. 2, C / // June 29, 1797 || - - - 24.17.39 29,50 58 || 14.17.22 || 7 July 2. 16. 17.53 49 ,68 61 13 | 6.7 | Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An. Var. Mag. h / // // o A // // Sine. Tang. Sec. 16. 17.43,7| – I,668 14, 17.49,4 | +8.63 6.7 || ,969 3,927 4,052 Date of Obſ. R. A. obſerved, Z. Diſt. obs". | Bar. Ther. App P.D.ded. Mag| ‘h Z // o / // O / // Jan. 9, 1796 |16, 17. 58,2 54.41. 4 || 29,08 || 43 | 16. 6.57 6 || S. P. 17. 59 I I ,85 || 46 7. 4. 6.7 || S. P. | Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. War. N. P. D. An. War. Mag." h / // ze O / y/ ** Sine. Tang. Sec. I6. 17.57,7| – I, Io9 | 16. 7.27,2 +8,63 6 || 1961 | 3,459 || 3,600 CEPH E I H E V E L II so. perhaps : but Quære. Date of Obſ. IR. A. obſerved. Z. Diff. obs'. Bar. Ther. App P.D. ded". Mag. h 2 // o z z. O / // June 30, 1794 || 4, 22.28,5|47.46.26 29,68| 59 9.12. I 6 S. P. July 1. 28,6 23 582 64 II. 57 5 S. P. 4. 28,8 22 * 6 I 57 6 S. P. - Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. Am. Var. N. P. D. An. Var. Mag. * h 7 º'/ // . o 2 Z/ */ | Sine. Tang, I Sec. | 4. 23-34.8 + 1 O,61 I 9. IO-52,5 –8,23 5.6 || >987 6, 185 | 6,265 N 2 92 Particulars concerning each STAR, deduced from other Authors. [CHAP, II, Obſerved by Flamſteed with the Sextant, - Dec. 21, 1681. Mur. Arc, Ap. Io, I704. That of 1725, brought up to Jan. o. 1800, is, R. A. 16° 21' 45",9. - - I 6% 23' 45°. That of 17 12 ſeems better - P. D. 13° 48' 40". 21. n U R S A. M IN OR I. S. - Long- 1800. | Lat. Mag. if S o / // S o / // • 2 we | 5 Ptol. 6 3. 3.40. o 3. 27.56.47 77.4O. o 4 || Bor, præc. lat. [] . . U1. Beigh 3. 24. I5. O | 3. 29. 19.35 78. o. o 5 Tych. * 3. 24.52. O | 3. 27.38.58 77.38.3O 5 || Infer, z. in [] ſeq. Pr. H. 3. 24.28. O 3. 27.20.5o 77.45. O 4. + 9 Hev. % 3. 25.52.36 3. 27.49. I 2 77.47.43 5 || In latere ſeu ventre. I I Fl. 1712. A 3. 25.26.25 3, 26.58.41 77.49.28 || 4.5 || In lat, clarior. 2 I 1725. A 3. 26, 18.22 3. 27.5o.38 77.44, 15 5 || Auſtr. ſeq. lat. [I. t l - In Flamſteed's Edit. of Ptol, the letters of 3 and n are tranſpoſed. R. A. In Time. P. D. Mag. O / // h / // O / // 9 Hev. 'M 246.48.36 16. 27. I4. I 3.33. O 5 1 i Fl. 17 I 2 246.49.5o 16. 27. 19. I 3. 33.4C 4-5 2 I I 725 246.2O. o I6. 25.30 I 3.33.49 5 -ºr- 20 Tych. A 17 Hev. A I 1 Fl. 17 2. A 15 I 725. A 17 Hev. 1 1 Fl. 1712 I 5 I 725 I 5. Long. O / // 29.44-3O O. O.22 O. 42 - 4. O.48.52 i R. A. O / // 247. I 9. I 9 247.25. O 247. 7.3O | | A D R A C C N I S. 18oo. O / // 2.3 I. 28 1.56.58 • 2. I 4.2C 2.2 I. 8 :S In Time. h / // 16. 29.17 16. 29.40 16. 28.30 Lat. O / // 8 I. 4.30 81. 2.36 8 I. 6. I I 8 H. O. 5 P. D. O A. // 2O.28. 5 2O.33.4C 2O.33.5o Obſerved by Flamſteed with the Sextant, - Dec. 27, 1681. Mur. Arc, July This brought up to Jan. o. 1800, is, R. A. 16° 28′ 8",5. ~r- ~ - I, I 703. '4; Mag. In flexu nodi 3". In flex. 3. praec. In flex. 3. Borea. ^*. P. D. 20° 48' 8", 1. — Chap. II.] The Obſervations of each ST A.R. claſſed tºge her, *.*. -, * ** **, . 93 21. n U R S AE M I N OR I S. Date of Obſ. R. A. obſerved. Z. Diſt. obs". Bar. Ther. App P. D. ded". Mag. - - h z 2, o / // O / // June 26, 1794|16. 23.44,8| 24.48.43 29,78 57 | 13.46.18 || 5 || 27. 44,6 42 | 3O,OO | 58 19 || 5.4 || Face W. 28. 4539 44 so3 56 I6 || 4 || - - E. 29. 45.4 41 29,87 || 59 2O 5 June 29. I797 43 8 ,5o 58 53 5 July 6. 42,6 I 5 524 56 47 5 Hence the mean Poſition for Jan. o. 18Oo, ſeems to be, R. A. Am. Var. | N. P. D. An. Var. Mag. h / // // O / // // Sine. Tang. Sec. 16. 23.30,6| – I,881 | 13.47.22,4| +8,17 || 4.5 || ,971 || 4,074 || 4,195 15. A D R A C O N I S. Date of Obſ. R. A. obſerved. Z. Diſt. obs". Bar. Ther. Appº P.D. ded". Mag, . h z z. o / // . . . .” June 26, 1794|16. 28.29.3| 17.48.14 | 29,78 57 | 20,46.53 4. 27. |. 28,6 I6 30,00 || 58 53 4.5 || Face W. 28. 29,9: I 5 : ,03 || 56 53 4: || - - E. 29- 28,6 I 2 29,87| 59 57 5.4 Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. War. , N. P. D. An. War. Mag. ^ h . z. // o A // // Sine. Tang. Sec. 16. 28.25, 2 | -o, 17o 20.47.56,4 +7,8o 5.4 || >935 | 2,632 2,816 94. Particulars concerning each STAR, deduced from other Authors, [CHAP. II. * * v * * * * * - - * * * - - -xxx +-ā- - - aº - +--- T -- - •Tº - - * This is one of Dr. Herſchel's Double Stars, if I have not miſtaken his deſcription II. 92, .*. by which I looked for it here. CAM E L O PA R D A L I H E V E L II 17. R. A. In Time. P. D. Mag. O / // h / // o / // 17 Hev. 65. 2.57 4, 20. I 2 24.2 I - O 4 || In ventre. 5 Urſ. Maj. 1712 65.5.2.1 5 4, 23.29 24. I4-45 || 4-5 9 F]. *~~~~ - - - - 24. I4 - 5 4-5 - Obſerved by Flamſteed Jan. 25, 1696, as in Perſeus. Hev. brought up to Jan. o. 1800, is, R.A. 4° 33' 35",8. P. D. 24° 2' 35". Fl. 1712 º tº- sº - cº - es º º Q- 4” 35' 3”. º ºma º 24° 1' 25". z This I take to be the Star mentioned by Herſchel as of 5 or 6 Mag. in his deſcription of the Double Star, II. 92. above, in Camelopardali clune. - * . *—-º-A CHAP. II.] The Obſervations of each STA R claſſed together. 95 Date of obſ, R. A.obſerved. Z. Diff, obs'. Bar. Ther. App P.D.ded"|Mag. h / // O A //- O /, // June 29. 1797 || 4, 30. 9:: 62.24. 4 || 29, 5o 58 23.50.23 7.8 || Scarcely viſible. July 6. 7,6 52 , 24 56 12 || 7.8 Hence the mean Poſition for Jan. O. 18co, ſeems to be, R. A. An. Var. N. P. D. An. Var. Mag. h /* //. // o / // // ' Sine. Tang. Sec. 4. 30.27,6| + 5,863 23.49.47,8 -7.67 || 7.8 || 9 || 5 || 2,264 2,475 C A M E L O PA R D A L I H E V E L II 17. Date of Obſ. R. A. obſerved. z. Diff. obs'. Bar. Ther. App P.D. ded. Mag. * h / // - O / // O / 2. June 29. I794 || 4, 33.40,6| 62.35.54 29,87| 59 24. 2. I 5 4 || S. P. 3O. 4. I 54,5 | 68 59 I 5 4 || S. P. July 1. 40,6 54 ,82 | 64 14 | 6.5 || S. P. June 29, 1797 57 24. 35o 58 I.44 || 4.5 || S. P. Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. | An. War. N. P. D. An. Var. |Mag. h / // // o / // // - Sine. Tang. Sec. 4. 34.19,3| +6,354 24, 1.18.5 -7,27 5.4 || 913 2,244 2,456 Date of obſ, R.A. obſerved z. Diff. obs'. Bar. Ther. App P.D.ded Mag| h / // o / // O / // . July 15, 1794 || 4. 36.2425 | 54:39.25 29,75|| 62 | 16. 5. 16 6 || S. P. I9. 2554. 27 * 75 I7 6 S. P. *- * Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. War. N. P. D. An. Var. |Mag. h A // // O / // // Sine. Tang. Secs- | 4, 37. ro,o +7,402 | 16. 4.16,2 —7,24 6 || 961 || 3,468 3,613 Particulars concerning each S T A R, deduced from other Authors. ſchar. II, 22 Ptol. U1. Beigh 23 Tych. I 8 Hev. 12 Fl. 1712, 18 Fl. I725. I 8 Hev. I 2 F1. 1712 I 8 1725 Obſerved by Flamſteed with the Sextant, - Dec. 27, 1681. Mur. Arc, July : Long. O / // 9. O. C. 28. I. O 28.22. O 29.18.37 29.49. O 29.45.58 R. A. O / // . 249.42.25 249.46.30 249.4 I.2O 18. g D R A C O N I S. 18oo. O y // 3.16.47 3. 5.35 I. 8.58 -1.2.1.16 I. I 8. I4. i In Time. h A // I6. 38.5o I6. 39. 6 16. 38.45 I. I 5. I 3 || | : Lat. O f // 8 I. I 5. O 81.57. O 81.41. O 8 I.38. I 5 8 I.39.25 8 I.37. Io P. D. O / // 24.47.25 24.4.9. O 24-49. I 5 I, I 7 O3. Fl. 1725, brought up to Jan. o. 1800, is, R. A. 16° 39' 25",8. 4” —r ----> --> :- - Trium aſtration. Poſt flex. 3m. 4* parvula. 3m in reëta ſeq. Auſt. P. D. 25° o' 55",9. - * wº " . . £ ºf . a * Å. . . w Chap. II.] 7%e Obſervations of each STA R claſſed together. -- 97 \ *re- Date of Obſ. R. A. obſerved] z. Diff. obsº. Bar. Ther.|Appº P.D. ded". Mag. | h & // O f // O Z // July 2, 1797 || 4, 39. 4 || 55. 8.21 29,68| 61 | 16.34.14 7 || S. P. 6. 4,6 26 324 56 | . Io 7.6 || S. P. Hence the mean Poſition for Jan. o. 18oo, ſeems to be, R. A. An. War. N. P. D. An. Var. Mag. | h f // // O Af // { // ſº Sine. Tang. Sec, # 4, 39.28,8 +7,282 | 16.33.43.o –6,92 || 7.6 || ,958 3,361 3,507 | K. *- -s” 18. g D R A C o N I S. Date of Obſ. R. A. obſerved. Z. Diſt. obsd. Bar. Ther. App P.D. ded. Mag." h /* // O / // Q /* // June 28, 1794 || 6. 39.33,9| 13.34.21 || 30,03| 56 25. o.52 5 : July 4, 3,6 f I7 29,93 || 6 I 36 || 5 | H. Hence the mean Poſition for Jan. o. 1800, ſeems to be, •r---- * R. A. | An. Var. N. P. D. An. Var. |Mag. // hi A /? A/ O / A/ |-6, 39:33.5 +9,383 23, 1.5°.5 +691 || 5 || 996 || 2,140 2,361 Tang. Sec. - 98 Particulars concerning each STAR, deduced from other Authors, [Char. II. C A M E L O P A R D A L I H E V E L I I I 8. R. A. In Time. P. D. Mag. O f // h / A/ O º // 18 Hev. 66.45. I3 4, 27. I 16:34.19 6 || In tergo. Not obſerved by Flamſteed. / This brought up to Jan. o. 1800, is, R. A. 4° 43' 39";7. P. D. 16° 18′ 42",5: CAM ELO PA R D A L I H E V E L II 19. R. A. In Time. P. D. Mag. O / // fi / // O / // 19 Hev. 66.49.17 4, 27. I 7 I I. I.7. O 5 || Supra tergum. TNot in Flamſteed. This brought up to Jan. o. 1800, is, R. A. 4° 48' 46",9. P. D. 11% of 42",5. CHAP. II.] - *The obſervations of each STA R claſſed tºgether. 99 - & *------- * * -1. *** Date of Obſ. R.A. obſerved z. Diff, obs'. Bar. Ther. Appº P.D. ded". Mag. | * h / // o / // - o / // June 29, 1794 || 4, 38.54,6| 54.5o.3o 29,87| 59 | 16.16.21,5 7 S. P. July 1. | 53,6 35 ,82 64 27 7 S. P. I 3. 54 38. 352 7o 28 7 S. P. I 5. r 54 sº sºme * --|--|-- lº Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An. Var. |Mag. h / // z/ - o z // // Sine. Tang. Sec. 4. 39.39,7| +7,373 | 16.15.31,8 – 6,89 6.7 || 960 | 3,430 3,572 =–4–3– - * –" +-- - - -*— - - - _* C A M E LO P A R D A L I H E V E L II 18. -ºr- Date of Obſ. R. A. obſerved. Z. Diſt, obs". Bar. Ther. App P.D. ded". Mag, h / // o / // O / // June 30. 1794 |4. 46.34 || 54.55.30 29,68 59 | 16.21.23 6 || S. P. July 1. 33,6; 3o ,82 64 23 6.7 || S. P. I 3. 3+ 34 352 7o 24. 6 S. P. July 2, 1797 52 3 ;68 || 61 2O. 55 6 S. P. l \- Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. War. N. P. D. An. Var. |Mag. h / // // o A // // Sine. Tang. Sec. 4. 47.2O,O | +7,392 | 16.20,30,5 –6,33 6 || 3959 º 3,552 CA ME LOP A R D A L I H E V E L II 19. Date of Obſ. R. A. obſerved. Z. Diff. obs". Bar. Ther. App. P.D. ded". Mag. * Th / // o 2 // - o Z // * July 4, 1794 || 4, 48.56,7| 49.37.31 29,93 || 6 || || 1 1. 3. Io 5.6 || S. P. 7. 57, I 32 ,74 | 66 Io 5 S. P. 9. 57 27 sº 61 6 5.6 || S. P. | Hence the mean Poſition for Jan. o. I 8oo, ſeems to be, R. A. An. Var. N. P. D. Am. Var. Mag. h / // // O / / / AA Sine. Tang. Sec 4. 49,56,7| +9,607 | I I. 2. 18, 2 –6,03 5 || 398 I 5, 128 5,225 | - • - - -º- O 2 IOC Particulars concerning each STAR, deduced from other Authors. [CHAP. II. * -, *— —a- 19. h D R A C O N I S. Long. Long. 18oo. Lat. |Mag. || | S o z º. S o / // o e // , | 23 Ptol. 5. 9.2O. O | 6. 3.36.47 80.2O. o 3m in reëta media. h 5 Ul. Beigh 5. 27.31. o 6. 2.31.35 84. O. O 22 Tych. h 5. 28.2 I. o 6. I. 7.58 83. 18. O 5 || Quae 24 ſequitur. 26 Hev. h 5. 29.28.27 6, 1.25. 3 83. 19. I5 5 || Poſt flex. 3" 3”. I 3-Fl. 1712. h 6. o. Io.58 6. I.43. 14 83. 19.35 6 || I 9 1725. h 6. o. 7.47 6. I.40. 3 83.17.43 | 5 | R. A. In Time. P. D. Mag. - O / // h A // • , , 20 Hev. 2.53.35. 7 | 16. 54.2O 24, 18. I5 13 Fl. 1712 2.53.39. O 16. 54.36 24.22.55 #9 1725 | 253.34.30 16. 54. I 8 24.23. O | - | } Obſerved by Flamſteed July 1, 1793. - That of 1725, brought up to Jan. o, 1800, is, R.A. 16° 54'45", 5. P. D. 24° 33' 21",4- - - *——r-1–- —1– - ** w —r-— ...” 20. D R A C O N I S. Not in Hevelius, R. A. - In Time. | P. D. Mag, - . . g h f ºf o € // } & 14 FI. 1712. h 2, 253.47. I 5 16. 55. 9 24.28.4O 6 || 2O I725. 253.42.49 16. 54.51 24.28.5o 6 Obſerved July 1, 1703. This is a Double Star of Dr. Herſchel's I. Claſs, N° 19 ; the moſt minute of all the Double Stars he had then found. It requires the moſt favourable circumſtances for it to be ſeen at all. char II.] The obſervations of each STAR claſd together. . I O I. Af Á - - If . * ------------------——t----- T. M. --- zºº F -->m-Gº-y- Tº J - * - wº - - * ~ * * * - v-- - - ... .º. ... e. . ...--, --~~~~~ *r- * * * * * 19. A D R A C o N I S. Date of obſ, R.A. obſerved z. Diff. obs'. Bar. Ther. App P.D. ded: Mag. - h / // o / // 9 / // - - - June 3o. 1794 |16. 54.58 14, 2.34 29,68 59 24.32.40 6 July 1. 58,6 26 ,82 64 47 5 4. 58. R 44. 293 6 I 29 5 M 7. 57.6 35 ,74 | 66 j. 38 9. 57,2 || - - - ems ºn sºme sº I º ºs º 5 IO, 57 • * * H. - - I -, - I - - - 5 || | - * - Hence the mean Poſition for Jan. o. 1800, ſeems to be, | sº. R. A. | An. War. N. P. D. An. War. Mag. } h / // // o / // - , a - 1} Sine. Tang. Sec. 16. 54.56,7| +o,259 24.33.28,6 + 5,61 5 *|† 2,406 | | Theſe Zenith Diſtances differ more than they ought from a hurry in reading off, to prepare for the next Star, which did not ſucceed from the ſame cauſe. *—r ----- x -- -*- 20. D R A C O N I S. Date of Obſ. |R. A. obſerved. Z. Diff. obs, Bar. Ther. App. P.D. ded". Mag. H h / // o Z // ; o / // - July 1o 1794 |16. 55.25 | 13.57. o 29,90 59 24.38.13 || 7.8 | I 5. - 29 3 375 62 I O 7 I 9. k 28,4 O ,6o 75 13 7 Hence the mean Poſition for Jan. o. 1800, ſeems to be, || R. A. An. War. N. P. D. An. Var, Mag. || h / // // G / // // * Sine. Tang. Seq2 16. 55.2799 || --O,27O || 24:39. 4,4 + 5,58 7 || >999 2, 179 3,397 - i HO 2. Particulars concerning each STAR, deduced from other Authors. . [CH ar. II.' 2 . . . f 22. a U R S AE M I N O R, I S. Long. Long. I 8oo. Lat. | Mag S O / // S O / // O / // 3 Ptol. . . . 2. 16. o. o 3. Io. 16.47 74. O. O 4 || Ante edućtm Caudae, U1. Beigh 3. O. 55. O 3. 5.59.35 73.45. G 3 Tych. 6 3. 3.24. O | 3. 6. IO-58 73.5O. O 4 || In Caudae radice. Pr. H. 3. 3.22. O | 3. 6. 14.5o 73.49. 2 4. Io Hev. 6 3. 4.2.1.5o 3. 6.18.26 73.5 I. 8 4 || 1" Caudae. T - 12 Fl. 1712. a 3. 4.45. 5 || 3. 6.17.2 I 73.53.36 4 || In origine Caudae. 22 1725. 6 3. 4.55.25 | 3. 6.27.4 73.53. 8 4 || Ante eductm Caudae. \ | R. A. In Time. P. D. Mag (O / // h A A/ O f f/ Io Hev. 26o.40.2O I7. 22.4. I 7.30. I 5 12 Fl. 1712 259.55. IO I 7. I 9.4. I 7.32.40 22 I 725 259-33. O 17. I 8. I 2 7-32.45 Obſerved by Flamſteed with the Sextant, - Dec. 21, 1681. Mur. Arc, Ap. I I, 17 O4. Fl. 1725, brought up to Jan. o. 1800, is, R. A. 17° 5' 52".6. * wºmº- P. D. 7° 40'. CHAP. II.] The Obſervations of each STA R claſſed together. 103 k Sº- Date of Obſ. R. A. obſerved. Z. Biſt, obs'. Bar. Ther. App P.D. ded'. Mag. h 2 / . o / // . * o / // - July 6, 1797 || 4, 58.16,6 50,49.25,5| 29,24| 56 12.15. 1 || 7.6 || S. P. Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An. Var. Mag. h / // // o z 27 // Sine. Targ. Sec, 4, 58.46,9} +9,oo 1 || 12, 14.37,8 – 5,36 * wn 4,608 4,722 Date of Obſ. R. A. obſerved. Z. Diſt, obs". Bar. Ther. App P.D. ded"Mag. j h Z // o z 2, o z // . Jan. 17, 1796|| 17. o.21 55. 8.37 || 29,85| 46 | 16.34.33 6.7 Hence the mean Poſition for Jan. o. 1803, ſeems to be, R. A. An. War. N. P. D. An. Var. [Mag. h 2. // o / // Z/ Sine. Tang. Sec. | 17. O.19,6 – 1,270 || 16.34.35,6 + 5, 19 6.7 | ,958 * 3,595 ~ * -i- | arº. 22, a U R S AE M I N O R I S. Date of Obſ. R. A. obſerved. Z. Diff. obs". Bar. Ther. Appº P.D. ded Mag. h / // O / // to / // July 7, 1794 | 17, 7.40,6| 3.56.11.5 29,74| 66 || 7-38.42 || 4 8. 39,7 I 3 390 65 4. I 4- 9. 4 I 32 I I 3O,O7 61 42 4. 1 I. 4. I * * * : * - || = • i = ma me 4. - Hence the mean Poſition for Jan. o. 1800, ſeems to be, .** R. A. An. Var. N. P. D. An. Var. Mag. |} - h A // zz o / // // Sine. Targ. Seó. 17. 6.56,6 —6,606 || 7.39.24,2 +4,51. 4 || >99 I | 7,438 7,502 I C4 Particulars concerning each STAR, deduced from other Authors, [Chap. If. Obſerved by Flamſteed with the Sextant, - Dec. 27, 1681, 22. & D R A C O N I S. - Long. Long, 18oo. Lat. |Mag. S. o z // S o / // o z. z. || 24 Ptol. § 5. 8.20. O 6. 2.36.47. 84.5o. O 3 || Trium in reis Borea. U1. Beigh 5. 24.34. O 5. 29.38.35 | 85. I 5. O | - - 24 Tych. § 5. 26.51.30 5. 29.38.28 84.46. O | 3 || Polo vicinior mediocriter lucida. Pr. H. 5. 26.41. o 5. 29.33.50 84.51. O 3 || - 22 Hev. Ç 5. 27.28. o 5. 29.24.36 | 84.5o o 3 || Poſt flexin gam ſects. 16 Fl. 1712. & 5. 28.35.53 6. O. 8, 9 84.47.29 3 || Inflexu 3° ſeq. 22. I 725. § 5. 28.39. 5 6. O. II.2 I 84.47. Q | 2. Trium in rećta Bor, R. A. - In Time. f P. D. Mag o' / // h / // O / // 22 Hev. 257. 7. I 9 17. 8.29 23.48.25 16 Fl. 1712 257. 3. I 5 I 7. 8. 3 23:53.50 I6 I 725 257, 2.3O 17. 8. Io 23.54. IO - | | | || Mur. Arc, July 31, 1692; July 1, July 9, 1703. Fl. 1725, brought up to Jan. o. 1800, is, R. A. 17” 8' 25";2. P. D. 24° 2' 23”,8. —r- Not in Hevelius. *— - r—r. r 19. C A M E L O P A R D A LI. | R. A. 1 In Time. P. D. Magº .* o / // h y // o / // ... I' 15 Urſae, Fl. 1712 76.59. o 5. 7.56 26. 7. O 6 | I 9 Cam. Fl. 1725 76.54. O 5. 7.36 26. 6.30 6 | § Obſerved by Flamſteed Jan. 25, 1696. R. A. An. War, P. D. Am. Var. * h ./ // - / 4. o # // // Fl. 1725, brought up to Jan. Q. 1790, is - || 5, 17. Io, I | + 5,762 25.59.34 || –3,73 18oo, - - 5. 18. 7,7| - - - 25.58. 56,8 - This was omitted in my General Catalogue, Zone 25, though it is in the Catalogue in R. Aſcenſion. * - CHAP. II.] . The Obſervations of each STAR claſſed together. Io 5 5, 17.56.4 22. & D R A C O N I S. Date of Obſ. R. A. observed. Z Diſt, obs". Bar. Ther.App. P.D. ded". Mag. | h ’ ” . O / // a / // July Io. 1794; 17. 8.14 14.33.39 29,90 59 24. I.33 3.4 I 3. I 5 37 352 7 O 3 3 I 9. Rººm º ºr 4-3 ,6o 67 3O 2O. I 5 43 ,5o 58 29 3 - F. } l | Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D., An. Var. Mag 1 h z // // O / // // Sine. Tang. Sec. 17. 8.13.5 | +o, 132 24, 2.14,6 + 4, 5 I 3 || >913 2,242 2,454. * - | ** , H * . \ ––. -a- sºng-sºº 19. C A M E L O P A R D A L I. Date of Obſ. R. A. obſerved. Z. Diſt, obs". Bar. Ther.|App P.D. ded". Mag' \ s h * // o / // O 2 // July 7. 1794 || 5. 17.21, 1 || 64.34. 4 || 29,74 | 66 26. o.32 6 S. P. § | 20 4. ,90 || 65 33 6 S. P. 9. 2 I 32. 5 30,07 || 6 i 35 6 S. P. & \ Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. War. N. P. D. An. Var. Mag. h / // // O / / / // Sine. Tang. Sec. + 5,762 25.59.59,3 — 3,72 6 || ,899 * 2, 181 Ioé Particulars concerning each STAR, deduced from other Authors, [CHAP, If... ** Af .* —T- —rs x3- ~E~r * * **- : *** *. rº-" " -º-º-º: .* F-ra wr--- ~~~ -------ºr, x. * -vº x t - x **-xxº~E~~~xacº * rº-ºsmºgºr CHAP. II.] The Obſervations of each S T A R claſſed together. Io? Date of Obſ. R. A. obſerved. Z. Diſt. obs". Bar. Ther. App. P. D. ded". Mag. h / // O / // sº o / // July 1o 1794 5, 21.49 || 63. o.22,5 29,90 59 24.26.45 6.5 || S. P. I 9. 4934. 23 ,6o 67 44 6 : || S. P. 2O, 4925 25 25O 58. 47. 6 S. P. Hence the mean Poſition for Jan. o. 1850, ſeems to be, R. A. An. Var. N. P. D. An. Var. Mag. h / A/ // O / // // Sine. Tang. Sec. 5. 22.25,7| + 5,967 24.26. I I,7 -3532 6.5 || ,910 | 2,201 2,417 Date of Obſ. R. A. obſerved Z. Diſt. obsd, * Bar. Ther. Appº P.D. ded". Mag. h / // o / // O / // July 13, 1794 5. 30.47, 5 6o. I I, II 29, 52 || 7 O || 2 I. 37. I 8 6 S. P. 2O. 47 I 9 , 5o 58 29 6.7 S. P. 26. 49 I6 ,46 6o 26 6 S. P. - | - Hence the mean Poſition for Jan. o. i 8oo, ſeems to be, R. A. Am. Var. N. P. D. An. Var. Mag. h / // */ o / // A/ Sinc. Tan ºr . Sec. 5. 31.27, I | +6,409 21.36.58,3 - 2,53 6 || >929 º 257 4. P 2 1 o'S Particulars concerning each STAR, deduced from other Authors. [CHAP. II. 27. f D R A C C N I S. Long Loºg. 1800. Lat. |Mag . S O / ZZ S G / AY Q & A/ - - - ! 2 : Pio f 3. 2 .40. O || 4. I 5.56.47 86.5o. O 6 || Duorum prec- Uł, Beigh 4. C. 25. O 4. 5. 29.35 86.45. O on Fi. 17 t 2, f 4, 20.24.33 || 4. 2 .56.49 86.52.52 || 6 || 2" præc. 27 f7 - 5. f 4, 21.59.5o 4, 23.56. 6 86.59.45 5 || 2n antecedens. - \. Not in Hevelius. R. A. In Time. P. D. Mag, O / // h / /A O / // > * co FH. I 7 i 2. 263.28. O || || 7. 33.52. 2 I. 37.2O 27. i 725 263. 16. o l Z. 33. 4. 2.I .44-4C Obſerved with the Sextant, - Dec. 27, 1681. - . Mur. Arc, July 9, July 31, Aug. 1, 1793. That of 1725, brought up to Jan. o. 1800, is, R. A. 17° 32' 34";7. P. D. 21° 45° cº,9. CHAP. II.] The Obſervations of each STA R claſſed together. Io9 * - 27. f D R A C C N I S. Date of Obſ. (R.A. obſerved. Z. Diff. obs". Bar. Ther.|App P.D. deg'ſ Mag. h /. // O / // O. / // July 28, 1794 |17. 32.5o,2 | 16.51.28 29.51 65 21,43.42 | 4: 39- 49,8 29. ,52 63 4 I 5 Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An. Var. Mag h / // // o / // . // Sine. Tang. Sec 17. 32,46,o -o,263 21.44. I439 + 2,37 5 || >929 2,508 2,700 Date of Obſ. R. A. obſerved. Z. Diff. obs". Bar. Ther. App! P. D. ded". Meg. - - *. h / // 6 ºf // O / // 8- July 22, 1797 |17. 33. 6 | 18. 1948 29,75 6o 20.15.2 I S || Face W. - } - * - - |- Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. “ An, Var. N. P. EX. | An. Var. |Mag. h / /? Ax O / /* AA Sine. Tang. Sec. 17. 33. I,3| -o,528 || 20. 15.36,9 + 2,36 || 8 || ,938 2,7 Io 2,888 I HO Particulars concerning each STAR, deduced from ºther Authors. [CHAP, H. wº =- - • T-z-vº- t - vºr'. *** *** … . tº * 28, a D R A C O N I S. Long. | Long. 18oo. I Lat. , |Mag. S O Z // S O 7 // O / // 2O Pto). 3. 28.40. o 4, 22.56.47 87.30. O 6 || Duorum ſeq. Ul. Beigh 4, 11.40. o 4, 16.44.35 87.1 5. O 2 I Tych. & 4, 6.26. O 4. 9. 12.58 86.53. O 4 || Polo Zod. prox. 25 Hev. (v) 4. Io.22, 8 || 4, 12. I 8.44 86.55.30 || 4 || Polo proxima. 2 I Fl. 1712. aſ 4. 7. 18. It | 4, 8.5o. 27 | 86. 54.30 5 28 I 725. 0 4, 8, 13.33 || 4. 9.45.49 86.52. Io 4. || Polo Eclip. prox. l No letter in Ptolemy's Catalogue. R. A. In Time, P. D. | Mag. O / // h / // O / // 25 Hev. 264. 29.52 I 7. 37.59 2 i. 14.44 2 : Fl. 1712 264. 47.30 17. 39. Io 2 I. 6. Io 28 I 725 264 37. O 17. 38.28 2 I. 6.30 Obſerved by Flamſteed with the Sextant, - Dec. 27, 1681. Mur. Arc, July 31, Aug. 1, 1692; July 1, July 9, 1703. Fi. 1725, brought up to Jan. o. 1800, is, R. A. 17° g7' 46”,8. P. D. 21° 9' 39%3. - CHAP, II.] I I I The obſervations of each STAR claſſed together. Date of obſ, R.A. obſerved z. Diff. ob. Bar. Ther. App P.D.ded". Mag, _h / // O A // O / A/ Jan. I i. 1796 || 5. 35.30 | 18. 7.35 | 29,23| 46 20.27-33 .7 - r . Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An. Var. Mag, h / // //* O. / // //* Sine. Tang. Sec. 5. 35.54,9| +6,630 | 20.27.27,5 | – 2,15 7 || 3937 •ºse 2,861 # - - 28. & D R A C O N I S. Date of Obſ. R.A. obſerved. z. Diff. obs'. Bar. Ther. App. P.D. ded. Mag| h / // O A // O / // July 20, 1794 |17. 38.12 17.26.36 29,50 58 || 2 I. 8.33 5.4 26. I 2. 42 ,46 6o 27 4 : 3Q. I. I.33 42 >52 63. 28 5 Hence the mean Poſition for Jan. o. 1800, ſeems to be, - - R. A. An. Var. N. P. D. An. Var. |Mag. § h A /* // O / // - A/ * Sine. Tang. Sec. I7- 38. 7,2 -o,371 2 I. 8.59,5 +2,23 4.5 || ,982 | 2,584 || 2,771 I 2. Particulars concerning each STAR, deduced from other Authors. [CHAP. II. wº * - --- - - - - - - -*. *— - - * -- - —r—- -ºw 29. D R A C O N I S. Not in Hevelius’s Catalogue. Not in Flamſteed 1712. R. A. In Time. P. D. Mag, o / // h / / / 6 * // 29 Fl. 1725 265. 18. o 17. 41.12 I 5.36.35 6 Obſerved July 31, Aug. 1, 1692. This brought up to Jan. o. 1800, is, R. A. 17° 38' 5",9. P. D. 15° 39' 49”,8. CHAP. II.] - II 3 The obſervations of all St A R claſa tºgether. -g 29. D R A C C N I S. Date of Obſ. R. A. obſerved. Z. Diſt, obs". Bar. Ther. App P.D. ded". Mag. - h / // O / // O. / // | * Jan. 18. 1796 |17. 38.17 | 54.13.43 29.72 48 I 5.39.35 7 S. P. Hence the mean Poſition for Jan. o. 1800, ſeems to be, j R. A. An. Var. N. P. D. An. War. Mag. h / // // O / // . // Sine. Tang. Sec. - 17. 38.14,2| – 1,676 15.39.35,3 + 1,92 7 || ,963 || 3,567 3,706 Date of Obſ. IR. A. obſerved. z. Diff. obs'. Bar. Ther. Appº P.D. ded iMag. - h / // O A // O / // July 18. 1797 |17. 38.28,7 | 18.16.48 29,68 66 20. 18.21 7 23. 27 I7 - 4 ,75 6o 5 7 Face W. | - Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An. Var. |Mag. h A // // o 2 // // Sine. Tang. i See From July 18 |17. 38.24 -o,527 | 20, 18.35,5 +I,92 7 || 3938 || 2,703 || 2,882 - 23 22,5 : - - - I 9,5 § I H 4. Particulars concerning each STAR, deduced from other Authors, . [CHAp, II. * 31. J 1 D R A C O N I S, is a Double STAR. Long. Long. 18oo. Lat, Mag. S o / // S O / // O / // ~ 17 Ptol. t!, 2. I 3.2O. o 3. 7.36.47 84, 30. O 4 || Trium in A, ſeq. U1. Beigh 3. 4. I 3. O 3, 8, 17.35 | 84. I2. O | 17 Tych. t!, 3. 6.34.39 3. 9.2 1.28 84. 4.30 4 || In A ſeq. Pr. H. 3. 7.37.2O | 3. I O.30. Io 84. 5. O 4 || - 2 Hev. t!, 3. 8, 9.30 3. Io. 6. 6 84. 6.. 9 4 || Poſt flex. 2m 3tia. 23 Fl. 1712. l I | 3. 9. 19.29 || 3. IO-42.45 84. 7.35 || 4 || In A Pres, 3 I 1725. J. I 3. 9. I.5o 3. Io.34. 6 84, 7.40 7 || A miſtake in the Magn, in Flamſteed 1725. R. A. In Time. P, TX. Mag O / // - h / // O A // 2 Hew. t!, 267.14.56 17. 48.59 I7.4 I. I2 23 Fl. 1712. , i. 266.55.30 I 7. 47.52 I7.42.5o 266.58.30 17. 47.54 I7.42.25 3 I 1725. * | There is a miſtake in the R. A. in Hevelius, 167° for 267°, which has occaſioned it to be miſplaced in his Catalogue. But the error is very manifeſt in the tranſcriber, and is correóted here. obſerved by Flamſteed with the Sextant, - Dec. 19, Dec. 27, 1681. Mur. Arc, July 31, Aug. 1, 1692; July 9, 1793. That of 1725, brought up to Jan. o. 1800, is, R. A. 17° 45' 52',3. P. D. 17° 44' 30%2. Called Double by Herſchel, IV. 7. . The Second Star was obſerved by Flamſteed July 9, 1703: 2" following the Firſt, and 20" . South of it. The Firſt is there ſet down as 5 Mag, ; the Second as 7. *. . * ºr º: ººz º.º. º.º. Chap. II.] II 5 The Obſervations of each STA R claſſed together. • . ~~. Aºtº Ar. - * * * * - ** ---- ~ (...'. * - - • * -- ~~~~ *.*.*.* *- sº * c Date of Obſ. July 19. 1793 2O. 29. July 30. 3 I. Aug. 4. July 22, 1797 Date of Obſº July 19, 1793 2O. 29. July 30, 1794 3 I. Aug. I. 4. July 22, 1797 Or fr. July 1797 I794 R. A. | h A // I7. 4.5-3O34 31. J, I D R A C O N I S, is a Double STAR. R. A. obſerved. h / // 17. 454; 4C,5 39, 3 38,8 3955 37 Hence the mean Poſition for Jan. o. 1800, ſeems to be, The FIRST of the Two, and largeſt. Z. Diff. obs'. O / // 20.5o. 5 5O. I 2 An. Var. // Bar. Ther. 29,46 56 274 || 54 29.43 6o M. P. D. O / // I7.45.22, 1 Appº P.D. ded”. O / I 7.4.4.59 4-5. O // 44.54 An. Var. // | Mag. ; - ;: Mag. 4.5 The SEcon D, and ſmalleſt of the Two. R. A. obſerved. h / // I6. 45.443.5 44,8 42, 5 4 I 33 4O,7 38,5 4 I 35 | Z. Diſt. obsd. o / // 2C-5O.3455 36 452.5 4 I - 32 R. A. h Z I7. 45.32 17. 45.31,8 // An. Var. // — 1,096 Bar. 29,65 57 352 63 ,461 63 > I 4 || 59 ,75|| 60 N. P. D. O / // I7. 44.52 17.44,46,3 | // An. Var. // - | Ther. App P.D. dedi. Mag. | Hence the mean Poſition for Jan. o. 1800, ſeems to be, Mag. Sine. Tang. Sec. 2952 || 3: I 2 I 3,279 Sinc. Tang, Sec. 3, 124 3,28o 3952 I 16 Particulars concerning each STAR, deduced from other Authors, [CHAP. II, --- * ~ * -- y † zg- +–r— 36. C A M E L O P A RT A L I. R. A. In Time. P. D. Mag. O / // h / // O / // 2 I Hev. 85. I 3. I7 5. 4.O. I 24:43.45 6 || Inter pedes anteriores. 24 Urſae Maj. 8 FI. Mº 5.33.30 5. 42. I4. 24, 17.55 5.6 36 Cam. Fl. 1725] 85.27.15 5. 4. I.49 || 24. I7.55 6 || Inter pedes anteriores. Obſerved Jan. 15, 1696. Fl. 1725, brought up to Jan. o. 1800, is, R. A. 5° 52' 52", 1. P. D. 24° I5' 50",9. CHAP. II.] I 17 The Obſervations of each STAR claſſed together. m- Date of Obſ. Aug. 4, 1794 R. A, obſerved. h / 5. 38.23,5 // . * Z. Diſt, obsd. O / // 39.3 I.2O Bar. 29,43 Ther. 6o *~ Appº P. D. ded". O / // o:56.39 Mag. 7 Hence the mean Poſition for Jan. o. 1800, ſeems to be, S. P. Face W. R. A. An. Var. N. P. D. An. Var. Mag. h / // // O / // - // Sine. Tang. Sec. 5. 47. I,6| +84,949 o.56. 4,9 – 1, 17. 7 ||,9999|61,38o|61,392 36. C A M E L O P A R D A L I. Date of Obſ. R. A. obſerved. Z. Diſt, obs". Bar. Ther.|Appº P.D. ded. Mag. h / A/ O / // - o / A/ July 20, 1794 | 5. 5.2. 6 || 62.5o. 7 29,59 || 58 24, 16.27 6 S. P. 26. 7 8 ,46 | 6o 28 6 S. P. 3I. 8,7 I 3 ,46 | 63 34 - - || S. P. Aug. 1. 8,5 A 4- • I 4 || 59 34. 6 S. P. º: July 21. 1797 24. 49.43 ,8o 62 5 6 S. P. Face W. 22, 24 48 375 6o IO 6 S. P. - – W. Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. . . . An. Var. N. P. D. An. Var. Mag. h / // ... // To / // // Sine. Tang. Sec. 5. 52,43,6 | + 6,032 24, 16. 9,4 —o,69 6 * 2,218 2,483 Date of Obſ. R. A. obſerved. Z. Diff. obs". Bar. Ther.|App P.D. ded. Mag h / // O / // O / // Aug. 4, 1794 | 5. 54:38,5| 62.23.25 29,43 | 6o 23.49.43 6.7 || S. P. Face W. July 22, 1797 || - - - I 9 ,75 6o 4-O 7 S. P. - – W. Hence the mean Poſition for Jan. O. 1860, ſeems to be, R. A. An. Var. N. P. D. Am. Var. Mag. h / // // O / // * // Sine. Tang. Sec. 5. 55.14,9| +6,999 || 23.49.21,7 -9,52 6.7 || ,915 2,264 2,478 I 18 Particulars concerning each STAR, deduced from other. Authors. * , ºfty * jº, [CHAP. II. --→g —d- --ry -º- —-º-º-º: 35. D R A C O N I S. Not in Hevelius; nor in Flamſteed 1712. R. A. In Time. P. D. . [Mag. O / // h * // O / // 35 Fl. I725 27O.4O. O 18. 2.40 || 12.56.55 6 Obſerved July 9, 1703. This brought up to Jan. O. I 8oo, is, R. A. 17° 57' 37",9. P. D. 12° 56' 52”,7. N. B. This R. A. has been uſed in calculating the P. D. on the other page. CHAP. II.] The Obſervations of each STAR claſſed together. I 9 Date of Obſ. R. A. obſerved. Z. Diſt, obs". Bar. Ther. Appº P.D. ded”, Mag. ſ h / // . O / // A'." o 4 // July 20. 1794 || 5. 56.26 62.48.43 29,50 58 24.15. 3 || 7.8 || S. P. Aug. I. 26,5 49.2.2 2 I 4 59 42 7.8 || S. P. July 21, 1797 43 48. I3 ,8o 62 14,35 7.8 || S. P. Face W. 22. as sº m 23 ,73 || 6o 45 8 S. P. - – W. Theſe Obſervations do not coincide: yet I believe it to be but one Star. From July 21, 1797, the mean Poſition for Jan. o. 1800, ſeems to be, r R. A. Am, War. N. P. D. An. Var. Mag, h / / . // O / - Z/ // Sine. Tang. Sec. 5. 57. 2,6 || +6,034 24, 14.29,0 -O,35 | 7.8 39 I 2 | 2,22O 2,435 The R.A. I believe to be true; but the P. D. ſeems very uncertain. The Star was very faint: and the Obſervations not ſatisfactory. Date of Obſ. July 21. 1797 22. Hence the mean Polar Diſtance for Jan. o. 1800, ſeems to be, R. A. obſerved. R. A. 35. D R A C O N I S. Z. Diſt, obsd. O A // 25.33.53 5395 s An. War. Bar. 29,8o 275 Ther. 62 6o N. P. O / 13. I.15.3 App P.D.ded. O 2. // I 3. I. 7 7 D. // * An. Var. // +o,23 Mag. Mag. 6 Face W. - - W. Sine. Tang. Sec. 3974 || 4,331 || 4,448 I 2G) Particulars concerning each S T A R, deduced from other Authors. [Chap. II. . . l 37 Caſſiop. Tych. 22 Camel. Hev. 27 Urſae Maj. Fl. 17 2 22 Cam. Hev. 27 Urſae Maj. Fl. 1712 } } Long. o / A/ 26. I 5. O 27.45. I 2 28.10.15 2 R. A. O / // 85.32.56 86.23.2O Not in Flamſteed 1725. *- Long. 1800. O / // 29. I.58 29.41.48 29.42.3 I . 2. # In Time. h / // 5. 42. I2 5. 45.33 Lat. O / // 45.32. O 45.58.26. 45-52-52 P. D. O / // 20.33. 16 20.39.30 - Obſerved by Flamſteed Jan. 25, 1696, as in Perſeus. Trium in Borea 3tia. In pede ſin. praec. 37 Caſſ. Tych. Hev. brought up to Jan. o. 1800, is, R. A. $* 57° 33”. P. D. 20° 31' 12”. FI. 1712 - - - - - - - - - - 5' 37' 43% - - 20° 38' 15 // Q The Lat. in Flamſteed 1712 is called Auſtralis, but ſhould be Borealis. -A Not in Hevelius. 26 Fl. 1712. / 2 34 1725. J. r) * 34. p 2 D R A C C N I S. R. A. O / // 27O. Io. 45 27O. 12. O In Time. h / // I8. o.43 18, O.48 P. D. Q / // 17.58.5o 17. 59. IO Obſerved with the Sextant, - Dec. 19, Dec. 27, 1681. Fl. I 725, brought up to Jan. o. 1800, is, R. A. 17° 58. 52",6. P. D. 17° 59' 10”,8. Mur. Arc, July 31, Aug. 1, 1692; July 9, 1703. chap. II.]. The obſervations. of each 3TAR claſſed together, I 2. I —- ~ & v * : . .” -- ~ * * £º . . . . * f - - ~ * * * * *%--> . . . .* * * * *...* , , . T ~ * ==-z-z-z---------z-z-z-z-z-z-z-z- *Tºº FTT-FIF - - - + º- - - - º - →-- sº ºw =w Z- ~~~rºw--------> ſ g-z-z-ºr-ºw ---------rºr—as, F-------> ----------------------------. º, *. +---> *º- sº." - * ... ? - - ºr *- I have not obſerved this Star. 34. Q 2 D R A C O N I S. Date of Obſ. R.A. obſerved. Z. Diſt. obs". Bar. Ther.|Appi P.D. ded. Mag. R / // o / // . - - O / // . July 31, 1794|17. 58.47,7| 20.36.46 29,46|| 63 17.58.20 | 5 . Aug. Io. 47,6 44,5| >70 62 2125 5 - * : . t -> l Hence the mean Poſition for Jan. o. 18oo, ſeems to be, R. A. An...War. N. P. D. ' An. Var. Mag. | * * * // • * * // || Sine. Tang . Sec. 17. 58.38.8 - 1,059 17.58.43.0 | +o,09 || 5 |,951 3,081 || 3,239 1 22 Particulars concerning each STAR, deduced from ºf her Authors. [Chap. II, C E P H E I H E V E L I I 51. #. R. A. In Time, P. D. |Mag. o / // h , ºr o e º - 5 I Hev. 7o.5 I.4. I - 4. 43.27 2.5o,39 6 Ad Stell, Pol. inter pedes Auſtra Not in Flamſteed. This of Hev, brought up to Jan. o. 1800, is, R. A. 5° 53' 26", P. D. 2° 41' 23%2. CA ME LO PA R D A L I H EV E L II 23, R. A. In Time. f P. D. Mag. || o & Z/ h / // . o . A // * \ Not in Flamſteed. - This brought up to Jan. o. 1800, is, R. A. 6° 11’ 3”.4. P. D. Io' 12' 5". • Char. II.] 123 The obſervations of each STAR cloſed together. Fºr ... -- *—r –– ºr- à * a - *----------_ ºt---------------~~~ +––––a–– **--> w" A'.…tº * C E P H E I H E V E L I I st. wº--- F Date of Obſ. R. A. obſerved. Z. Diff. obs". Bar. Ther. App P.D. ded". Mag. ^. h a ze O / // 4 O / A/ July 26, 1794 || 5, 59.31 |41.18.30 29,46 6o 2.43.51 5 || S. P. - 3O. * 36,3| 28 ,52| 63 5o || 5 || S. P. Aug. 1. 3455 35 2 I 4 59 56 || 5 || S. P. • * 9. 34,5| 23 ,8o 6o 45 5 || S. P. Face W Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. War. N. P. D. An. War. Mag. h . 2, s // o / // // Sine. Tang. Sec. 6. 2.5o,7| +31,124 2.43.32,6 + O, 24. 5 | ,999 || 2 I sooo; 2 ſ, O40 Date of Obſ. R. A. obſerved. Z. Diſt. obs". - Bar. Ther. Appº P.D. ded". Mag - h / // O / // o A // . . . . July 29, 1794 6, 4,40;6: 48.52. 9 || 29,55 64 || 10.17.46 || 7 || S. P. 3O. 4. I23 9 ,52 | 63 46 7.8 || S. P. Aug. 17, 1795 55 | 8,5| 3o 61 ; 44 || 7 || S. P. Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An. Var. Mag, h S / // ze O / "A AA Sine. | Tang. Sec. 6, 5:46.5| + 10,416 || 19.17.30.9 +o,4o || 7 ||,984 5,506 5,597 -- CAM ELO PA R D A LI H E V E L II 23. Date of obſ, R. A. obſerved z. Diff. obº. Bar. Ther. App. P.D. ded Mag. - h / // A o / // O / // . July 26, 1794|6. Io.47 || 48.5o. 9 29,46 | 60 Io. I 5.45 || 6 || S. P. 29. 48,6 13 >55 | 64 5O 6 || S. P. 3O. 49,3 9 352 | 63 45 6 || S. P. Aug. 17. 1795 II. O I 2 230 || 6 I 48 6 S. P. Hence the mean Poſition for Jan. o. 18oo, ſeems to be, R. A. An. Var. N. P. D. An. Var. Mag. h * A/ A/ o / // // s * 6 e * - Sine. Tang. Sec. tº II.53,4 + Io,43 I to 15:34.2 +o,54 6 >984 53.525 | 5,614 R 2 I 24. Particulars concerning each STAR, deduced from other Authors, fchan, H. Not in Hevelius. 27 Fl. 1712 36 1725 º → —r----—z— R. A. O A //" 273. II. I 5. 273. 2. O Tr" *~ --r- *: In Time. h / /?" I8. I2.45 I8. I 2. 8 Y- Obſerved Aug. 1, 1692; July 9, 1703. ſ +– 36. D R A C O N I S. P. D. 25.42. O 25.42. O ... 3 -z-N-ºx--a < , = -\t--ºº--E > rv-r-zººn This of 1725, brought up to Jan. o. 1800, is, R.A. 18° 12' 40";2. P. D. 25° 46' 5".8- • * ~ *-------------~~~~ *w wº- char, Hj. The obſervations of each STAR claſſed together, I2.5 *~ .* Date of Obſ. |R. A. obſerved. Z. Diſt. obs". ſ Bar. Ther. Appº P.D. ded". Mag. - * h / // o / // o, A // - July 21, 1797 || 6. 12. 9 || 54.45. 1 29,8o 62 | 16.10.53 || 6 || S. P. Face W. 22, 9, I 9 || ||75|| 60 || 1 1. o 6.7 || S. P. - - W. Aug. 9. I. O. : 4. ,50 | 62 Io.56 6 || S. P. - - W. * * a F . . 4 | Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. War. N. P. D. An. Var. Mag. he Z // /* o & A/ //* | Sine. Tang. Sec. 6, 12.34,5| +7,665 | 16. Io.49.4 + 1,05 || 6 || 96o 3,446 3,588 36. D R A C O N I S. Date of obſ, R.A. obſerved z. Diff, obs'. Bar. Ther. App P.D.ded. Mag. - * , ºr O & 6'A' o / // July 31, 1794 || 8, 12.43,7 12:55.33 29,46 63 || 25-39.41 . 6 j' * Aug. 4. - 43,5 | 16 ,43 | 6o 58 - - || Face W. 9- 4425 2 I ,8o 6o 53 6 || - - W. | Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. War. N. P. D. Am. Var. Mag. j ñ z → z, // o º Aº- zz Sine. Tang. I: Sec. 18, 12.43,4} +o,296 || 25.40, 9,2 - I, II 6 || >99 I 2,98 I 2,308. . | 126 Particulars concerning each STAR, deduced from other Authors, [CHAP. II, * *--- * - w - x a------. + - - - - - - - **~~ —s 4o. D R A C C N I S. Not in Hevelius. w Nor in Flamſteed 17. 2. - * R. A. In Time. P. D. M., 0 ºf Z/ h a ze • , , 40 Fl. 1725 275.40. o I8. 22.40 Io. 5.55 5 & y Obſerved July 9, 1703. This brought up to Jan. o. 1800, is, R. A. 18. 16' 1",2. P. D. to 2' 53”;7. Q 41. D R A C o N I S. Not in Hevelius. Z Nor in Flamſteed 1712. R. A. In Time. P. D. Mag, o / // h / // O / // * 41 Fl. 1725 275.42. O | 18. 22.48 Io. 2.5o 5 Obſerved July 9, 1703. This brought up to Jan. o. 18oo, is, R. A. 18° 16' 5",6. P. D. 9° 59' 48%6. Herſchel (Double Stars, IV. 67.) gives theſe Stars, 4o. 41. Draconis, as diſtant 20° 39” mean meaſure; very accurate. Poſition, 35° 15' S. preceding. And he mentions a 3" much ſmaller Star, diſtant 3' 16° 33”. Poſition about 30° S. following. In a note he obſerves, that a motion in one of theſe Stars ſince Flamſteed's time is evident. But if we turn to the Obſervation of them, July 9, 1703, their difference in R. A. was then but 7” of time; and in Z. D. 10" of a degree. Whereas in the Catalogue it was ſtated as R. A. diff. 2 of a degree, E 8° of time; and P. D. 3' 5", through ſome miſtake in the redućtion. • - chap. II.] The obſervation of each STAR claſſed together. 127 7-Yº, jºr - - - 'X- * ~ * -- ~ - - - -- r • -º,- - - * i. rº - ... -- Tº º-wr-PW- > z-z----. * **- - *z-r-ver 40. D R A C O N I S. Date of Obſ. R. A. obſerved. Z. Diff. obs'. | Bar. Ther.|Appº P.D. ded". Mag. f 4 ll / // tº / // Q. / // July 26, 179418. 15.26 | - - - || - - || - - || - - - 6.7 29. . 26,6: 28.32-33,5 29,55| 64 || Io. 2.23,5 5.6 3O. 26,3 36 352 63 2 I 5.6 | 3I. 26.7 - - - || - - - - - - - 5.6 || – Aug. 4. 27.35 - - - - - - - - - - || - - || Face W. Aug. 16. 1796|| 18 23 3o,oo 63 33 6 - - E. Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. . ; An. Var. N. P. D. # An. War. Mag. || h z // // o a ze | // Sine. Tang. Sec. 18, 14.549 –4,463 | to 2.39.8 -1,35 | 5.6|,985 5,647 5,73; | - % - | } } | - 41. D R A C O N I S. Date of obſ, R.A. obſerved. z. Diaobº. I bar. Ther. App P.D. ded"|Mag. | h A 6"/ o / // > 9 / // l July 26, 1794/18. 15.33 28.32.49 || 29,46 60 | 10. 2. 8 6 || 29. * 34,6; • * * * ~ * * * * * - - - 5. 3o. - 33,3 - - - 1 - - || -, - || - - - 5 | 3 I. 3357 44 || 46 | 63 I 3 || 5 * Aug. 4. k 3455 45 || 43 || 6o 12 || - - || Face W. 9. - - - ) . 46 ,8o 6o IO, 5 - - - - W. Aug. I6. 1796 25,4 * * * * : * sm tº a º º an 6 - - E. M A * | | - t | Hence the mean Poſition for Jan. o. 1800, ſeems to be, A R. A. An. War. | N. P. D. | An. Var. |Mag. h f // A/ o 2 z \ Aº Sine. Tang. Sec. 18. 15. 2,8 || - 4,463 Io. 2.22,2 | – 1,35 5 || 3985 5,647 5,735 - - * ~ * , * * * • ‘ • , , • * wº- * . . . . . . - * ... • 1 * T. I 28 Particulars concerning each STAR, deduced from other,4uthors, * * y wº- - - > * , - - - - ~ * -. - - ". - * , . . . * •, - ... " & • *- * - J. : " . ~ - - . - * : *. r * . - - >2. *...* - tº . . . . . . . - * - * F3 - - ~ ; : 3 º,23 º, ºr ... " ' , & † - . # * tº ºº º • * , , . . . -º-º-ºry: " - rss , "- w - º * . . - “. a' • * $ - - x - • - - y - -r * ~ : , “ . *, * : ' , " " . . . * * } * * , - * : * : . . : , s , . . . . . k w •f • ? . “. . . - l_º--" - —A +--------- Prº-º-º-H--------, -s—== --------- vTºTºº Tº --- - - 37, D R A C G N I S. : Not in Hevelius. - +. Nor in Flamſteed 1712. - * R. A. In Time. P. D. Mag 6 º' // > h / // o y Z/ 37 Fl. I725 274.18, o | 18. 17.12 21.21.30 || 6 - --- Obſerved July 3, 1703. This brought up to Jan. o. 1800, is, R. A. 18° 16' 34%. —g- Not in Hevelius. * Nor in Flamſteed 1712. R. A. In Time. P. D. * O / A/ h / 3. // - * Q 38 Fl. 1725 274,41.20 | 18. 18.45 / // . 2127 so - Obſerved July 3, 1703. This brought up to Jan. o. 1800, is, R. A. 18° 18' 9".7. 38. D R A C C N I S. | Mag. P. D. 21° 24′ 32°,+. * * ~ * ** - * ~ 2 * * - *. a i r CHAP. II.] I 29 The Obſervations of each STAR claſſed together. * **w-...-s wºrs Date of Obſ. R. A. obſerved. h A // Aug. 7. 1796||18. 16.30,4 9. - 3 I 14. - 39,4 *- x --~~~~ r Z. Diſt, obs'. 17 —I- 37. D R A C O N I S. / // .16. 6 || 29,82 6o - 525 Bar. Ther. Appº P.D. ded". ,4o 64 Mag O / // ~ 2 I.19. 4 6.7 4 || 7.6 sº as em. 6 Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An. Var. Mag. h / // // o / // A/ Sine. H. Tang. Sec. 18. 16.26,8 || -o,345 21.19. I4,5 – 1,40 || 7.6 || >931 || 2,561 2,749 *— 38, D R A C O N I S. Date of Obſ. R. A. obſerved. Z. Diff. obs". Bar. Ther. App P.D. ded”. Mag| - * h e // o * Z/ o A // Aug. 7. 1796||18. 18. 12,4| 17.14.46 29,82 60 || 2 I.20, 24 7 9. - - - 46,5| 4o 64 23, § 7 I 4. 1 1,4 37 ,85 67 33 7 Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. • An. Var. N. P. D. An. Var. Mag. h / // // O / / / // Sine. Tang. Sec. 18. I 8. 7,2 - O,343 || 2 I.2O. 34,2 - I,4o 7 * 2,559 2,747 I 30 Particulars concerning each STAR, deduced from other Authors, [Char, If. 43. p D R A C C N I S. Long. Long, 1800. Lat. . Mag f S O / // S O A // O / // # 19 Ptol. . . . I. I 1.5o. o 2. 6. 6.47 84.50. O 4. *in A Awar. U!. Beigh 2. 2.37 - O 2. 7.35.35 84.52. O y . . . 19 Tych. (p 2. 5. 31. O 2. 8. I7.58 84.48. So 4 || Praec. ac Bor. A Pr. H. 2. 5.29, 20 | 2. 8.22. I O | 84,47.50 4. 29 Hev. (p 2, 6.45. I 3 2. 8.4. I.49 84.4.9.20 || 4 || Poſt flex. 2" piac. 29 FI. 1712 p 2. 6.46. Io 2. 8. 18.26 84.5o. 2 4 || A in ventre Auſt. 43 I 725. 45 | 2. 6.56.28 2. 8.28.44 84. 59.4O 5 || In A Auſtralior. - R. A. In Time. P. D. Mag. O / // h / // O / // 29 Hev 276. 19.5 I I 8. 25. I 9 I 8.5o. 42 29 FI. 1712 276. I 9. O I 8. 25. I6 18.50.2O 43 I 725 276. I 5.30 18. 25. 2 I 8.50.5o Obſerved by Flamſteed with the Sextant, - Dec. 19, 1681. Mur. Arc, July 30, 1692; July 3, 1703. FI. 1725, brought up to Jan. o. 1800, is, R. A. 18° 23' 30".7. P. D. 18° 46' 57",4. CHAP. II.] The Obſervations of each S T A R claſſed together. - I 31 *_ Sºrºr-ri—r Ak. - - 43. p D R A C C N I S. Date of Obſ. R. A. obſerved. Z. Diff. obs". Bar. Ther. App P. D. ded". Mag. | y h / // o / // 4. O / // July 26, 1794 | 18. 23.43, 5 | 19.48.55 29,46 6o 18.46. 12 4.3 29. 43,6 55 >55 64 12 || 5 : Aug. 14, 1797 | 4. I 53 59 ,6o 58 9 4. Face W. Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An. Var. |Mag." h A // // O / // // Si } ºr ſ c I T. C., | i 2ng. Sec. I8. 23:35.9 —o,839 || 18.46. I6,2 – 2,07 4 || 1947 2,943 | 3, 1 O8 : I 32 Particulars cºncerning each STA R, deduced from other Authors, [CHAP. II, 44. x D R A C O N I S. --- I ong. Long. 1800. Lat. Mag. S Q / // S O / // O A // 18 Ptol. I. 20.2O. O. 2. 14.36.47 83.30. O || 4 || 2m in A Bor, Ul. Beigh 2. S. 55. O 2, 1 O. 59.35 83.24. O S- 13 Tych. X. 3. 1.28. O | 3. 4. I 458 83. 28.30 4 || Auſtr. A. Pr. H. #. I c. 53. I 5 2. 13.46. 5 83.2O. O 3 - 31 Hev. 26. 2. I 1.45.2O | 2. I 3.41.56 83.29.40 4 || Poſt flex. 2m Auſtr, 3o Fl. 1712. X. 2. I 2. 2. O 2., 13.34, 16 83.3O.27 - 4 * 4 + I 725, 23. 2. 12. I 5.57 2, 13.49. 13 83.3 I.2O 4. There ſeems to be ſome miſtake in Tycho. And there is I inſtead of 2 Signs in Pr. of Heſſe. R. A. In Time, P. D. Mag. O / // h / // o / // of Hev. 276.47.53 18. 27. I I 7.26. I 3 32 Fl. I 7 2 276.4 1.30 18. 26.46 I 7.25. O 44. I 725 276.35. O 18. 26.2O 17.25. IO Obſerved with the Sextant, - Dec. 19, 1681. Mur. Arc, July 30, 1692; July 3, 1703. Fl. 1725, brought up to Jan. o. 1800, is, R. A. 18° 24′ Io",9. P. D. 17° 21' 6",8. 42. D R A C O N I S. Not in Hevelius. - Nor in Flamſteed 17 2. R. A. In Time. P. D. |Mag -- O / // h / // O / // 42 Fl. 1725 a;6.io. O I 8. 24.40 24,37.30 6 Obſerved Aug. 1, 1692. This brought up to Jan. o. 18oo, is, R. A. 18° 24′ 58”,2. CHAP. II.] The Obſervations of each S T A R claſſed together. I 33 * T ~~~ * ** º - a-—x--, -- * 44. × D R A C C N I S. Date of Obſ. R. A. obſerved. Z. Diſt, obs". Bar. Ther. Appº P.D. ded".|Mag. | h / // O / // - O / // July 30, 1794/18, 24.47,3| 21.13.45 29,52| 63 || 17:21.21 4. - 3I. 47,7 - - - * - I - - - - - - - 4 || w Aug. 4. 4725 42 ,43 || 6o 23 - - || Face W. ~ * | Hence the mean Poſition for Jan. o. 1800, ſeems to be, || R. A. An. Var. N. P. D. An. Var. Mag. h / // // O / // */ Sine. Tang. Sec. 18. 24.37,2 – I, 184 17.2 1.28,3 -2, I 5 || 4 || ,954 3, 199 || 3:35 I 42. D R A C O N I S. º Date of Obſ. R. A. obſerved. Z. Diff. obsd. | Bar. Ther. Appº P.D. ded". Mag. || - h / // O / // O / // . Aug. 9, 1794/18, 25.24,5 14, 1.5o 29,8o 6o 24.33.23 6 || Face W. I O, 24,6 56 ,7O | 62 I7 6 - - E. Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An. Var. Mag. h / // // • , , // Sine. Tang. Sec, 18. 25.22,9| +o, 162 | 24.33,27,3 – 2,2O 6 || >999 || 2,189 2,406 | f 34. Particulars concerning each STAR, deduced from other Authors. [CHAP. II. 42. C A M E L O P A R D A L I. -r- Long. Long. I 8oo. Lat. Mag, S O / // S G / // O A A/ 35 Caſſiop. Tych. 3. o.45. O || 3. 3.31.58 44. IO- O 6 || Trium in Bor. 2da. 26 Camel. Hev. 3. 2. 8.32 3. 3.41. 8 44.26.38 5 || In ped, fin, inf. Urſae Mai. * uni, º,} 3. 2, 3 I. I 7 || 3. 3-53-33 44, 23.2 I | 4-5 || 42 Cam, Fl. I 725| 3. 2.28.46 || 3. 3.51. 2 44, 23.2O 4.5 R. A. In Time. P. D. Mag, O / // h / // O A // 26 Hev. 94. 4. 2 6. 16.16 22. 3. 2 5 Fl. 1712 94.46.15 6. 19. 7 22. IO. IO 4.5 42 1725 94.42. O 6. 18.48 22. IO- 5 || 4-5 Obſerved by Flamſteed Jan. 25, 1696, and called in Perſeus. That of 1725, brought up to Jan. o. 18oo, is, R. A. 6° 36' 23",9. P. D. 22° 13' s?".6. cAMELO PA R D A LI H E V E L II 24. R. A. In Time. P. D. Mag. o / // h / // o / // - 24. Hev. 92.24.39 6. 9-39 I 2.42. I 7 5 || In Collo 5ta. Not obſerved by Flamſteed. A/ This brought up to Jan. o. 1800, is, R. A. 6° 31' 17". P. D. 12° 43' 53”.7. sº Chap. II.] The obſervations of each STAR claſſed together. I 35 42. C. A M E L O P A R D A L I. Date of obſ, R.A. obſerved z Dià, obº. Bar. Ther.App. P.D. ded. Mag. - / h / // o / // - O / // Aug. 7, 1796 6. 29.35,4| 6o.47.37 29,82| 6o 22. 13.49 5 S. P. 9. 36 38 ,4o 64 5 i 4.5 || S. P. $ 2. 36 38 ,68 63 5 I 5 S. P. Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. War. N. P. D. An. Var. |Mag - h / // Z/ O / // // Sine. Tang. | Sec. 6. 29.59,9| +6,325 22. 13.5o,8 +2,6o 4.5 || >926 2,446 2,042 - | | CAM E L O PA R D A L I H E V E L II 24. Date of Obſ. R. A. obſerved. Z. Diſt, obsd, Bar. Ther. Appº P.D. ded". Mag * h * // O / // O A // Aug. 15, 1796|| 6. 30. 3,5 51.22.31 29,98 || 62 12.48. 14 || 5.4 || S. P. I6. 334 28 3O,Oo 63 I I 5 S. P. I9. 5 34 29,79 64 17 4. S. P. Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. War. N. P. D. An. Var. Mag. h / // // O € // // . Sine. Tang. sº 6. 30.36,7| +8,898 || 12.48. 11,2 +2.62 5.4|,975 4,398 || 4,510 Particulars concerning each STAR, deduced from other Authors, [Char, II, 36 Caſſop. Tych. 27 Cam. Hev. 42 Urſae, Fl. 1712 43 Cam. Fl, 1725 Hev. Fl. 1712 1725 ºrw-y 43, C A M E L O P A R D A LI. Long. o / // S 3. O. 57. O 3. 2.24-35 3. 2.39. I 3 3. 2.36.32 R, A. O / // 94.46.36 95. 12.45 95. 7.30 Long. I 8oo. O A // . 3.43.58 S 3 3. 4.2 I, II 3. 4. II-29 3 . 4, 8,48. In Time. h / // I 9. 6 . 20.5 I . 20.3O º Lat. . o / // 45. 32. O 45.59.46 45.43.33 45-43.2 I P. D. o / // 2O.37. II 2O. 50.2O 2O.5O.25 Obſerved Jan. 25, 1696, and there called in Perſeus. Fl. 1725, brought up to Jan. o. 18oo, is, R. A. 6° 32' 30",5. P. D. 20° 54% 36.4. Trium in B. 3tla. In pede fin. med, am-- 2 Ptol. 3. Ul. Beigh 2 Tych. Ö Pr. H. - I I Hev. 3. 13 Fl. 17 i 2. 3 2 3 1725. 3 II Hev. 13 F ]. 17 2 2 3 I 725 obſerved by Flamſteed with the Sextant, - Dec. 31, 1681. Mur. Arc, June 3, 1691. fi, 1725, brought up to Jan. o. 1800, is, R. A. 18° 37' 42", 1. P. D. 3° 26' 25", 5. 23. 3 U R S AE M I N OR I S. Long. 0. / // 2.30. 22, 25. 25.36. 25.30. 26.29.40 26.5o.39 26.49.30 : R. A. 289. 18. 17 287.35. O 287.43, o Long. 1800. Ö / // 26.46.47 27. 29.35 28.22.58 28.22.5o 28.26. 16 28.22.55 28.21.46 In Time. h & A/ I 9. I 7. I 3 I 9. Io. 20 I 9. I O. 52 Lat. Q / // 7o. O. O 7C. o. O 69.5o.3o 69.51.40 69.54. O 69.54.37 69.54. Io P. D. .38.3O 35.2O 3 3. 3.35. IO Mag, 4. : ł In Cauda. Penult. Caudae, Media Caudae. Penult. Caudae. Primae proxima. .* CHAP. II.] I 37 The Obſervations of each S T A R claſſed together. 43. C A M E L O P A R D A L I. * , Date of obſ, R.A.obſerved. z. Diff. obº. Bar. Ther. App P.D.de: Mag. h / // O Z . // O / // Aug. 7. 1796|| 6. 31.35,4| 59. 28. 1 || 29,82 | 6o 20.54. 9 5 || S. P. 14. 36.9 I ,85 67. 9 6 S. P. Hence the mean Poſition for Jan. o. 1800, ſeems to be, || R. A. An. Var. N. P. D. An. Var. Mag. il / // // o / // Z/ Sine. Tang. Sec. 6. 32. O,8| +6,532 20.54. 13, I +2,72 6.5 || 934 2,618 2,8o3 | | - 23. 3 U R S AE M I N OR I S. Date of Obſ. R. A. obſerved. Z. Diſt. obs". Bar. Ther. App! P.D. ded". Mag. h A // .O /* // • A // July 30, 1794|18. 38.37,3| 35. 8.29 || 29,52 63 3.26.19 4. 37. 4C37 28 : ,46 63 2O : 4.5 Aug. 4. 433 + 24 ,43 | 6o 24 4 Face W. 9. 38,5 3 I ,8O 59 I6 4. - – W. I O. 37,6 37 ,7o 62 I I 4. - - E. 27. 33 39 ;49; 56 8 5 Aug. 12. 1795 23 3O , 58 67 I 8 3 I S. 24: 3 I ,42 || 65 I6 16. ~, 26 3 I ,42 63 I6 3 17. 2+ 36 ,3o 6 I I 3 3 Aug. 19. 1796 4. 29 ,7o 64 I 9 3 | | Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. War. N. P. D. An. War. Mag. * h / // */ O / // * // ~ * * X- - Sine. Tang Sec 18. 36.34, I - 18,844 3.26. 14.6 – 3, 19 4.3 |,998 16,648 || 16,670 138 Particulars concerning each STAR, deduced from other Authors. [CHAP. II. w--> —w-r- 24. U R S A. M I No R I S. —F- Not in Hevelius's Catalogue. * R. A. | In Time. P. D. Mag. • • , , * , , , , , 2. - * > 14. Fl. 17 t 2 29O.3 I. I 5 I 9. 22. 5 3.14.35 | 7 || 24. I 725 288. 9. O 19, 12.36 3.14-30 || 6 || | - f - } || º Obſerved June 3, 1691. Fl. 1725, brought up to Jan. o. 18oo, is, R. A. 18° 35' 51",7. P. D. 3° 5' 46”,2. r— C AME LO PA R D A L I H E V E L II 25. R. A. In Time. P. D. Mag. O a // h /* /A O / /? - 25 Hev. 93.3 I. 5 6. I4. 4. - . 7. 7. I 5 6 In Coilo 2* Borea. Not in Flamſteed. t This brought up to Jan. o. 1800, is, R. A. 6° 45' 54", I. P. D. 7° 15' 11”,2. ------~~~~~~ CHAP. II.] The Obſervations of each S T A R claſſed together. I 39 *— ºr ºx-º-Tº - • - - -- a -w x —t— --Rºx: wº-y- x=zº-Fºr-Pir-ir----- ~-yr- 24. U R S BE M I N O R I S. Date of Obſ. R. A. obſerved. Z. Diff. obs". Bar. Ther. Appº P.D. ded". Mag. as v h , , o A // O / // . July 30, 1794 |18. 46.36 35.3C. 3 I 29,52 63 || 3. 4.17 6.7 31. - 35,7 - - - || - - - - || - - - || 7.6 Aug. 4. 35, 5 3o ,43 | 6o 17 6.7 || Face W. Aug. 16. 1795 " 2 I 34, 5 ,42 63 I 1,5 6.7 || - - E. 17. . . . . I 5 3455 ,3o || 6 | I 2 7 - Aug. 19. 1796 45.59 3o ,7o 64 17 | 6.7 | \ { Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. War. N. P. D. An. War. Mag. h / // // O / // // Sine. Tang. Sec, 18. 44, 13,5 - 21,335 3. 4- 1 O23 –3,83 6.7 || 3998 18,637 | 18,665 * | CAM E L O P A R D A L I H E V E L II 25. Date of Obſ. R.A. obſerved. Z. Diff. obs'. Bar. Ther. App. P.D. ded. Mag. - h 2. // O / z. O A z/ Aug. 9, 1794| 6, 46.48,5| 45.49.33 29,8o 59 || 7.15. 3 6 Face W. IC). 48,6 4O ,7O || 62 I O 6 - - E. 27. 5O 4O 240 || 56 I I 6 Aug. 12, 1795 58 38 , 58 || 67 7 4.5 I 5. 58 35 342. * 5 & | | | Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An. Var. Mag. ! h / // // o A // A/ Sine. Tang. Sec. 6. 48.12,5| + 13,341 7.15.16.2 | +4, 18 5.6 || ,992 || 7,856 6,918 | s In one of my Obſervations it is remarked as being of a reddiſh colour. 14O Particulars concerning each STAR, deduced from other Authors. [CHAP, If, - * H- - • -: - -v r w R-r-r wr- +--→ - - -—s - -- - === -- Trº-Hº-...-y-Fºx R. A. In Time. - P. D. Mag, o f (ſ h / // o / // 35 Drac, Fl. 1712, 283.22.15 18, 53.29 16.22.30 5 Obſerved by Flamſteed Dec. 31, 1692. - .* This brought up to Jan. o. 1800, is, R. A. 18° 56' 51". P. D. 16° 14' 25". It is not in Hevelius, nor in Flamſteed 1725: and, though the P. D. differs from my Obſer- ^vations, it is probably the ſame Star, of 5 Mag. • * —w-r- ºr- Fº - º * -*— - - -TH-n $o. D R A C O N I S. Not in Hevelius. Nor in Flamſteed 1712. R. A. * In Time. P. D. Mag. - o / // . h / // o / // 50 FI. 1725 283.43. O 18, 54.52 I 4, 57.30 * Obſerved July 31, 1692; July 3, 1703. This brought up to Jan. o. 1809, is, R. A. 18° 5'1' 31",6. P. D. 14° 49' 2”. chap. II.]" - The Obſervations of each STAR claſſed together. - I4 r -*. - - .* - wºn " - r Date of Obſ. R. A. obſerved. z. Diff. obs". Bar. Ther. Ap, P.D. ded. |Mag. -> h / // O f // w O / // M- Aug. 14. 1797 |18, 5o.49,3| 22.25.59 || 29,60 58 | 16. 9. 5 || 5 || Face w. 15. 48,6 | 55 || 43 || 69 | 9 || 5 || - - E. | Hence the mean Poſition for Jam. o. 1850, ſeems to be, R. A. An. Var. N. P. D. An. Var. Mag h Z // // Ö z z. // Sine. 3,453 3,593 18. 50.4 I,7 -1,431 16. 9- 6,9 –4,41 || 5 || >960 Tang. | Sec. 5.o. D. R A C C N I S. f Date of Obſ. R. A. chſerved. Z. Diff. obs' Bar. Pher. App. P.D des. Mag." - h / // o z z. o / // Aug. 4. 794|18, 52.58,5| 23.46.15 29,43| 6o 14.38.47 || 5 || Face W. 9. - 58 || 27 | 38o $9 | 35 | 5 || - - W. iO. , 58 2 I ,7o 62 4. A 5 : - - E. | - - Hence the mean Poſition for Jan. o. 18so, ſeems to be, R. A. An. War. N P. D. An. Var. Mag, * h -z // // O / // | // Sine- 3 a ng. Sec 18. 52.33, I | – 1,850 | I 4.48.32,6 - 4, 59 | 5 || >996 || 3,782 3,912 | Date of obſ, R.A. obſerved. z Diff. obs'. Bar. The App. P. D. dega Maz. - | S || - h A // O * // | O / A/ ; * 2: 1794| 6, 54.39 53. 8.44 29,40|56 14.343 | 7 || S. P. Aug. 16. 1795 45 49 3 #2 | 63 33 | 7 S. ‘H’. 17. . . 47 53 230 || 6 | 39 7 || S. P. | Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. | An. Var. N. P. D. Aa, Var. |Mag| h a ze // O / // // - Sine- Tang. See. iº , - . * . . . . --- -- Particulars concerning each STAR, deduced from other Authors, [CHAP. H. Obſerved by Flamſteed with the Sextant, - Dec. 19, 1681. Mur. Arc, July 31, 1692; July 1, July 3, 1703. * I 42 52. v D R A C C N I S. Long. Long. 18oo. Lat. |Mag S o / ºr S o f ºf o , w 1 5 Ptol. U o. 21.40. o | I. I 5.56.47 81.2O. o 5 | In A praecedens. U1. Beigh I - I 2.55 - O I. 17.59.35 82, O.. O tº . 14 Tych. U I. I 5.18. O | I. I 8. 4.58 83. 5. O 4 || In A prec. 34. Hev. U I. 16.12.24 I. 18. 9. O 83. I 1.2G 4 || Poſt flex, 2n præc. B. 38 Fl. 1712. U I. 16. 4. I4 I. 17.36.30 83. 9.33 5 || A in ventre prec, 52 1725. U I. 16. 8. 5 I. 17.40.2 I 83.11.30 4.5 || 3 in A piec. - R. A. In Time. P. D. .. Mag O /* // A // o e // . 34. Hev. 284. 29.28 18. 57.57 19. 8.48 38 Fl. 1712 284.36.45 18. 58.27 I 9. 7. I 5 52 I 725 284,39.30 I8. 58. 2 I 9. 8. O FI. 1725, brought up to Jan. o. 1800, is, R. A. 18° 56' 47",3. P. D. 18° 58' 53*.8, Char. II.] . . The Obſervations of each STA R claſſed together. 143 52. v D R A C O N I S. Date of Obſ. R.A. obſerved. z. Diff. obs". | Bar. Ther.|App. P.D. dejº. Mag. h / // O / A/ - º O / // Aug. Io. 1794 |18, 56.54,6|| 19.36.38 || 29.70 || 62 | 18.58.29 || 4 27. 53 43 ,4O | 56 25 5 Aug. 2. 179; 54 34. ,58| 67 34 || 5 | I 5. 54 32 ,42 || 65 35 | Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. Am. Var. N. P. D. An. Var. Mag. h / // // O / // // | Sine. Tang. Sec. f 18. 56.46,o -o,702 | 18.58.18,2 —4,91 r 5 - * - *: ,945 2,999 || 3,976 / | !. Date of Obſ. R. A. obſerved. Z. Diff, obs". Bar. Ther. App. P. D.ded. Mag.j * . h / // O / // O / // A , , ~ " * --> * * * | * Aug. 14, 1797 || 6. 56.57,3| 47.18.47 29,60 || 58 8.44.2O 7 || Face W. 15. 56,6 47 43 | 6o 2C 7 || - - E. - - ºt i Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An. Var. Mag| h A /A // O / // Z/ | | Sine. Tang. Sec. 6, 57.343| + 1,437 || 3:44,244] +4.84 || 7 || 988 || 6′so 6,578 | I 44. Particulars concerning each STAR, deduced from other Authors, a [CHAP, If, 56. D R A C O N I S. Not in Hevelius’s Catalogue. Nor Flamſteed 1712. * * R. A. In Time. P. D. Mag. | o / // h Z // o / // ~ * 56 Fl. 1725 287.52.39 || 19. II.30 13.58.55 | 6 I find no obſervation of this in F lamſteed. This brought up to Jan. o. 1800, is, R. A. 19° 7' 40".5. P. D. 13° 47' 54",4. This is one of Dr. Herſchel's Double Stars, II. 3I. - - *- Jº- ~ f *... - II. | - CHAP. II.]. - Date of Obſ. Aug. 27, 1794 ,” The Obſervations of each STAR claſſed together. I 45 R. A. obſerved. Z. Diſt. obsº. Bar. Ther. App P.D. ded: Mag. ſ h / // . o / // O z z Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An. War. |Mag. h / // // o / // // | Sine. Tang. Sec. 18, 59.24,7| – 4,025 | Io. 18.43,4 –5, 19 7.6 || ,984 5,494 5,584 * - But the R.A. is doubtful, having been only obſerved at the 4th wire that evening; and it was never obſerved afterwards. **– R. A. obſerved. Z. Diſt, obs”. The Z. D. appeared ſatisfactory. I)ate of Obſ. Bar. Ther. Appº P.D. ded". Mag. - h º º o A // º O / // Aug. 7, 1796|| 7. O.47,4|49.30.19 29,82 60 Io. 55.57 7.8 || S. P. .8. . 4725 2, 2 ,6o 6o 56. O 8. S. P. I 2. 4725 22 ,66 || 65 56. O 7.8 || S. P. • w 3. - ; Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An. Var. Mag. h > // zz o / // // - Sine. Tang. Sec. 7. I-29,7| +9,739 10.56. Io,2 + 5.30 7.8 || >982 5, 175 || 5,270 56. D R A C C N I S. Date of Obſ. i R. A. obſerved. Z. Diſt. obs". Bar. Ther. App P.D. dedē. Mag. • * * h ſ’ Aſº O / // O A // Aug. 7, 1796 - - - || 25.19.59 29,82 6o 13,15. 2 7 || 8. 19. 6.27 2O. O,5 ,6o 6o O 6 I 2, 26,5 | 19.58 ,68 63 | 3 || 6.7 Hence the mean Poſition for Jan. o. 1800, ſeems to be, \ R. A. Am. Var. N. P. D. An. War. Mag. h f // // o / // f/ Sine. Tang. Sec. 19. 6.. 9, 1 || - 2,372 13.14.52,6 - 5,56 6.7 || 3973 || 4,248 4,364 sººn N - -- . . . ~~ -- *- * 146 Particular concerning each STAR, deduced from other Authors, (Chap. If, –h- ~&. * wº —Y-F-ri -R arw ׺w-ºxº-º-º-º-º: - *º-r. †-ºr +- r ~m -- r - .*. * 55. D R A C O N I S. Not in Hevelius ; nor in Flamſteed 1712. * R. A. In Time. P. D. Mag. d / // h / A o / // $” 55 Fl. 1725 287. I I. o 19, 8.44 24-3 I-35 6 || .. Obſerved by Flamſteed July 1, and 3, 1793. This brought up to Jan. o. 1800, is, R. A. 19% 8” 1967. P. D. 24° 20' 46%. *A- * 3-ºr. W —r— - ** U R S HE H E V E L I I I. R. A. In Time. P. D. Mag. & A // h / // 0 2 // I Hev. IO3-52.40 || 6. 55-3 . . 20, 54.38 5 | Piecedenºcaps. ~- * Not obſerved by Flamſteed. This brought up to Jan. o. 1860, is, R. A. 7” Io' 18",4. P. D. 20° 34'42".7. CHAP. II.] . . . . The Obſervations of each STAR claſſed together. I47 J r 55. D R A C O N I S. Date of Obſ. IR. A. obſerved. Z. Diff. obs'. Bar. Ther.|App P. D. ded. Mag. I - - h . z. o / ºr r o / // Aug. Io. 1794; 19. 8.59.6 | 1.4.13.40,5| 29,70. 62 24.21.32 6 23, 59 45 : ,6o 62. 28 : 6.7 Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. War. N. P. D. An. War. Mag. h / // // o / // z. Sine. Tang. Sec. 19. 8.57,7| +o,25o 24.21.15.7 - 5394 6 || 9 || 1 || 2,299| 2,425 U R S AE H E V E L I I I. Date of Obſ. R. A. obſerved. Z. Diſt. obs. Bar. Ther. App P.D. ded. Mag. - - h f // O / // O / // Aug. 19, 1793. 7. 9. 14,3| 59.42.26.5 29,81 55 21. 8.37 5 || S. P. Face W. w 25. - IO,8 3O 584 54 4. I 5 S. P. - - E. Aug. 27, 1794 I-8 37 24o 56 45 5 || S. P. | v. | | i N. B. The mean of the R.A. in 1793 muſt be taken for the truth. Hence the mean Poſition for Jan. o, 18oo, ſeems to be, | - R. A. An. Var. N. P. D. An. Var, Misſ h / * - */ o z z. - y/ Sine. Tang. Sec. 7. 9,56,2| +6,366 || 2:1. 9, 3.2 +5.599 || 5 || ,932 * 237 72 148 Particulars concerning each STA R, deduced from. other *Authors, , º' [Chap. It. 57. 3 D R A C O N I S. Long. Long, 1800. *Lat. º º Māg. |} º, . s • , , , , s , , , • a z. . . . II Ptol. tº 7r II. 20.3O. O. o. 14.46.47 83. O. o 4 | In J in flex. in Borealis, $ U1. Beigh o, Io. 13. o. o. I 5.17.35 | 83. o. o || r 1 1 Tych. 3. o. I 2.26.30 o. I 5. I 3.28 82.49. O 3 || Bor. E flex. 2. Pr. H. o. 1 2. 3. O | O. 14.55.5o 82.49.20 4. ... • 19 Hev. 3. O. I 3.24.58 o. I 5.21.34 || 82.48.45 3 || Ante flex. 2. lucida. 41 Fl. 1712. 3 o, I 3. io.55 O. 14.43, II | 82.51. 4 || 3 | In D flex. 2. Bor. 57 1725. 3 o. 13. 6. 3 || O. 14.38. I9 | 82.52.5o 3.4 || In Ll inf. 1. Bot. 3 and ºr are tranſpoſed in Ptol. Cat. in Flamſteed. * | R. A. In Time. - P. D. - Mag • z z. h : z // • 2 / - 19 Hev. 3. 251.44.36 16. 46.58 22.51.45 3 41 Fl. 17 I 2. 3 288. 9.45 I 9. I 2.39 22. 52.3C 3 57 1725. 3 288. 5. O 19. 12.20 22.53. O || 3-4 This is miſplaced in Hev. Cat, through a miſtake in R. A. Obſerved by Flamſteed July 26, 29, 31, 1692 ; July 1, 1703. Flamſteed of 1725, brough: up to } R. A. b z - .// © /* , A/ - I 12" 24”,8. P. D. 22° 41 O Jan. O. I 8oo, is, - 9° 12 24, 2° 41' 35 La Caille - - - - - - - - - 19° 12ſ 27",o. - - 22. 41' 27°. - - 3. Bradley - - - - - - - - - - 19' 12" 27%7. - - 22° 41' 24”. - - 3. Zach - - - - - - - - - - - 19° 12" 27",95. - ... . 59. D R A C O N I S. Not in Hevelius. - º - | R. A. | In Time. P. D. |Mag| *. s • z º. h / // o . A // * , '' 43 Fl. 1712 29O. II.3O 19. 20.46 13.59.40 || 6 59 I 725 290. 1.20 I 9, 20. 5 13.59. O. | 6 | Obſerved July 31, 1692 ; July 3, 9, 1793. - This brought up to Jan. o. 1800, is, R. A. 19° 16' 22",4. P. D. 13° 46' 41°. ch AP. II.] * . . The Obſervations of each STA R claſſed together. I49 57. 3 D R A C O N I S. Date of obſ, R.A. obſerved. z. Diff obs'. Bar. Ther. App P.D. ded. Magi h / // o / // O / // Aug. 8, 1794|19. 12.30 15.53.31 29,65 58 22.41.40 4. Face W. IO. 3o,6 3 I ,7O 62 4. I 3 || -- & Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. | An. War. N. P. D. . . . An. Var. Mag, |- h / // - z 9 / // // Sine. Tang. Sec. I9. I2-2733| +O,O33 22.4 I.22,2 –6,24 3.4 || 3922 2,392 || 2,592 } | |. k > $ºmºsºm-ºwn | —--> 59. D R A C C N I S. Date of Obſ. R. A. obſerved. Z. Diff. obs". Bar. Ther. App P.D. ded". Mag, | -- h / /A" o / /* o z za . . . Aug. 9, 1794|19. 16.38,5| 24,47.53 29,8o 59 || 13.47. 8 6.5 || Face W. - IO. 37,6 57 || >70 62 4 || 6 - - E. 23. 36.5 59 ,61 62 2. 5.6 *- Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. Am. Var. N. P. D. An. Var. Mag || ... h. / // ** f/ O / .4/. A/ Sine. Tang. Sec. 19. 16,299| -2,984 || 3:46.43 —6,58 5.6|,971 || 4,680 4,2so | Particulars coneerning each STAR, deduced from other Authors. [Char, II, *— ~f~~T-r T--------ºr- +------ rº-z - v. -r----T: 2. * …º. - -w —l- --aſ * z-rº º *T----s Sw * ~ ** y − Obſerved by Flamſteed with the Sextant, - Dec. 1 9, 1681. - Mur. Arc, July 26, 31, 1692; July 3, 1703. ––– - > 6O. T D R A C O N I S. Long. | Long, 18oo. Lat. |Mag. ** S O y ºf S o a // r O * W/ 16 Ptol. t o. 26. Io. O | 1. 20.26.47 . .8o. I 5. O 5 || In A ſeq. U1. Beigh I. 16.34. O | 1. 21.38.35 8o. I 5. O 1 5 Tych. T- I. I 9.40.30 I. 22.27.28 8o.38. O 4 || In A qua ſeq. ad Auſt, 36 Hev. T I. 18.22.46 | 1. 20. 19.2.2 81. 2. O 4 || Poſt flex. 2. duor, ſeq. 44 Fl. 1712. T I. 20.32.52 || I. 22. 5. 8 '80.37.38. 5 || A ſeq. in ventre Bor. 6o 1725. T I. 20.44.1o 1, 22.16.26 8o.4o. 3 || 4.5 || In A Bor. J J . R. A In Time. . P. D. |Mag. O / // h z // O / A/ 36 Hev. 2.89.49.4 I 19. 19.19 || 17.46.13 4 : 44 Fl. 1712 29O.25.45 I 9. 2. I.43 17. I 4:45 5 : 6o I 725 29O. 15.30 19, 21. 2 17. I4.39 4.5 // Fl. 1725, brought up to Jan. o. 1800, is, R. A. 19%. 19' 11”,8. P. D. 17° 1' 54 char. II.] The obſervations of each S T A R claſſed together, I 51 Date of Obſ. |R. A. obſerved.| Z. Diſt, obs". Bar. Ther. App P.D. ded" | Mag.H. h / 2. o a z. o Z // Sept. 21. 1795 7. 18.44,7| 46.45. Io 29,72 62 8. Io.43 7 S. P. 23, , , 4-5 16 ,8o 61 48 8 || S. P. Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An. Var. |Mag. h / // // o Z // // - * Sine. Tang. Sec. 7, 19.42,7| + 1 1,809 8.10.54.5 +6,58 7.8 || >990 6,954 7,025 60. T D R A C O N I S. Date of Obſ. , R. A. obſerved.| z. Diſt, obs". Bar. Ther. Appº P.D. deda, Mag. H h / // O A // O Af zz w Aug. 8. 1794|19. 19.28 21-33-30 || 29,65|| 58 17. 1.35 | - - || Face W. 9. | 2735 33 ,8o 59 32 5 - - W. * IO, p 27,6 34. ,7o 62 3 I 4. - - E. * | Hence the mean Poſition for Jan. o. 18oo, ſeems to be, || R. A. Am. Var. N. P. D. | An. Var. Mag || h / // // 9 / // /* - Sine. Tang, Sec. #19. 19.1736 – 1,934 17. I. Io,6 -6,82 4.5 || ,956 3,267 || 3,416 * 52 Particulars concerning each STAR, deduced from other Authors. [CHAP, If. *... | The charaćters ºr and 3 are tranſpoſed in Ptol. Cat. 35 Hev. 42 Fl. I7 12 58 I 725 Obſerved by Flamſteed with the Sextant, - Dec. 19, 1681. | { R. A. o A yº/ 289.39.21 2.89.48. I5 289.47.30 In Time.* h f ºf I 9. 18.37 I9. I 9. I 3 I9. I 9. IO P. D. p A */ 25 - 3. O 24-52. Io 2.52.4o 58. r D R A C O N I S. Long. Long, 1800. Lat. |Mag. S O / /? S O / // o gº // , “ . … < * - *** Io Ptol. 3 || 1 1. 8. O. o o. 2.16.47 81.40. O 4 || In C, 1 flex. Auſt. U1. Beigh II. 27. I. O O. 2. 5.35 81.45. O *. Io Tych. It I I. 28.33. O o. 1. 19.58 81.5I. o 4 || Prope 2 flex. 35 Hev. 77 II. 29.24. I9 O. I.2O. 55 81.48. 12 4 || Ante flex. 2. 42 Fl. I712. 7 | II. 29.26.46 o. o. 59. 2 81.48.28 4.5 || Auſt. parvula. 58 I725. 7 || II. 29.22.35 | O. o. 54.5I 81.48.30 | * ** ' || Mur. Arc, July 26, 29, 1692; July 1, 3, I703, Fl. 1725, brought up to Jan. o. 18oo, is, R.A. 19° 19' 47%9. P. D. 24° 49' 10". 1Mag, 4. w r Ar- - *-*- CHAP. II.] The Obſervations of each STA R claſſed together. 153 $8. A D R A C o N I S. Date of Obſ. |R. A. obſerved. z. Diff. obs'. Bar. Ther. App P.D. ded" |Mag. h / // o / // o f Z/ Aug. 23, 1794/19. 19.37 13.54.48 29,60 | 62 24.40.25 5 27. 37 49 || 4 || 56 24 5.4| | Hence the mean Poſition for Jan. o. 1800, ſeems to be, - R. A. An, War. Ni P. D. Am. Var. Mag. h / // // O / // jºy Sine. Tang. Sec. I9. 19-36,3| +o,337 24.4o. 6,o –6,83 34 º 2, 177 2,396 { *S*ws -w------ wºmºr -ºr- Date of Obſ. R.A. obſerved: z Diſt, obs'. Bar. Ther. Appº P.D. ded". Mag. - h ’ jº o, A /* - o z z, «» Aug. 16, 1795 7. 21.35 | 47.5o.33 29,42 63 || 9, 15.55 7 I7. 37 27 ,3o || 6 | 49 || 7.6 -- \ | Theſe differ too much ; but I have no better Obſervations. Hence the mean Poſition for Jan. o. 18oo, ſeems to be, R. A. I Am. Var. N. P. D. An. Var. |Mag. h A /? . // O y ºf */ - Sine T S 7. 22:33,3}, + 10,733 9.16. 1 1,9 +7,06 6.7 º & 6,209 w . . ." I 54. Particulars concerning each STAR, deduced from other Authors. [Chap. II: --> - *t → *_ wº. *... •. wº- - f -- - -— z--> - y - - - - - ~<----> -- www- C AMELO PA R D A L I H E V E L II 28. R. A. In Time. P. D. Mag, - O / // h / // o a ze * - 28 Hev. IQ4. IO-55 6. 56, 4 || 9:36, o 6 || In collo 3 in Auſtr. Not obſerved by Flamſteed. This brought up to Jan. o. 1800, is, R. A. 7° 26' 25".5. P. D. 9° 49' 22". 51. C A M E L O P A R D A L I. Not in Hevelius; nor in Flamſteed 1712. R. A. In Time. P. D. Mag. G / // h / // O - / // 51 Fl. 1725 || 1 Io, Io.1o || 7. 20.41 23.5 I-45 5 Obſerved with the Mur. Arc, Feb. 1704, as in Lynx. This brought up to Jan. o. 18oo, is, R. A. 7° 31' 25",7. P. D. 24° 5' 12". 2. A ** *- * ** * - car. 11.) The obſervation of each sta R clºſed tºgether. I55 - - —r-r— vT--- agrº-v- C AM E LO P A R D A L I H E V E L II 28. Date of Obſ. R. A. obſerved z. Diſt obs". Bar. Ther.|Appi P. D. ded".|Mag. - h ºf ſº o / // o 6 AM" Aug. 16. 1795 - - - || 48.13.22 29.4% 63 9.38.58 7.8 || S. P. I7. sº mº sºme 35 ,3o 61. 47 7.8 || S. P. Sept. 28. 7. 25.33 25 ,6o 58 39. O 7 S. P. Oćt. 6. 32,8 - - - - - - - || - - - 7 S. P. Sept. 12, 1797 5 I:25 3 I 340 52 7 7 || S. P. - | | | Theſe are unſatisfactory. The mean Poſition deduced from them for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An. Var. Mag. h Z // */ o / // // Sine, Tang. Sec. 7. 26.21 + Io,364 9.39.2O, I +7,38 7.8 || ,986 5,879 5,963 * 51. C A M E L O P A R D A L I. Date of Obſ. R. A. obſerved. Z. Diſt. obs". Bar. Ther.|App' P.D. ded". Mag. 4. b. ? // 0. A // o / // Sept. 3, 1794 7. 26.51,5 62.38.37 29,80|| 59 || 24. 4.58 6 || S. P. Sept. 22. 1795 57 43 ,69| 6o 5- 3 5 || S. P. * * | | Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. War. N. P. D. An. War. Mag. h Z ſº // o f ſ/ f/ Sine. Tang. Sec. 7. 27.25, 5 || + 5,844 24, 5.16,4 | +7,40 6.5 || 9 || 3 || 2,237 2,450 Date of Obſ. R. A. obſerved. Z. Diſt. obs”. . . Bar. Ther. App" P.D.ded: Mag| h A // O Z A/ O A // Aug. 27. 1794|19. 28.42 24.44. 4 29.40 || 56 || 13.5o.58 7.6 28. 42 5 ,64 59 57 6 \, Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An var. Mag. h ºf a V/ o ſº f/ */ sine. Tang, Sec, 19. 28.26,5 - I,953 | I 3.5o.34,8 –7,56 6 || 97 I 4,058 4, 179 --- ********** —- - º { º - X 2 156 Particular concerning each STAR, deduced from other Airbors, [Char, II, --→ - - x – – J-E - - - - * ** H– x-r * q -F ---—z—r —I-…-- • * ~~ ~ x -: *s-ºr- , ; ;-& – r-º- = <- Ki y w-r-z-r-sº-va-r--rº-ºx----------ºr-wr-a-rk-º-z vs. vºs.-- ar;--~~~ Yº: a rarrºw ºf 61. a D R A C O N I S. Long. Long. 18oo. Lat. Mag.) S 0. A // S 9 / // o / , Az }. *x -* 14 Ptol. 0- o, Io,40. o I. 4.56.47 8o.3O. O. 5 || Auſt. A in ſeq. flex. U1. Beigh O. 25. I 3. O I. o. 17.35 | 8C.3o. O | - 16 Tych. O" o. 26.44. o o. 29.30.58 8o.54. O 4. - 37 Hev. Or O. 27. Io.33 O. 29. 7. 9 8o. 57. I 2 4 || In flex. 2. Bor. 45 Fl. 1712. T o. 27. II.22 o. 28.43.38 80.53. I I | 6 || A ſeq. Auſtr. 6 I 1725. T o. 27. 9.35 o. 28.41.5 I 8o.55. I4 4.5 || A ſeq., Auſts. k * | R. A. In Time. P. D. Mag. O ſ // h A A/ O / // 37 Hey. 2.93.5.1.52 ‘I g. 35.27 2O. I 3.38 4. 45 Fl. 1712 2.93. 18. 15 I 9. 33. I 3 2O.5 ſ.45 6 61 1725 293. 12.30 J9. 32.50 2O.52. I 5 || 4-5 | Obſerved by Flamſteed with the Sextant, - Dec. 19, 1681. - Mur. Arc, July 26, 29, 31, 1692; July 3, 9, 1703. Fl. 1725, brought up to Jan. o. 1800, is, R. A. 19° 32/ 30".8. P. D. 20° 37' 48". **** ch Ap, II.] The Obſervations of each STA R claſſed together. I 57 - - *== -— --~ * * - *.x - * *Tºº ~ * ** & A. r- -*. -E-Rz x Date of Obſ. R. A. obſerved. Z. Diſt. obs". Bar. |Ther. App P.D. ded". Mag | h / // o / // o / // Aug. Io. 1794 7. 31.38,6 || 48.33.24 29,70 62 Io. o. o 6.5 Aug. 16. I795 47-| 3O ,42 63 6 5.6 Sept. 22. 53 : 38 ,69 60 I4. 5 28. 53 | 37 ,6o 58 I 3 || 5 3O. 54 35 ,66 63 I I 5 . * Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. Am. Var. Mag. h / // // o / // // Sine. Tang. Sec. 7. 32.42,5 | + IO,O57 IO. O.30,0 +7,87 5 || 1985 5,666 55754. 61. a D R A C O N I S. Date of Obſ. R. A. obſerved. z. Diff, obs'. Bar. Ther.|App P.D. dejº Mag. . h A // o / // I • z z. Aug. 23. 1794|19. 32.46 17.54. 8 || 29,60 | 62 | 20.41. I 5 27. 46 9 340 || 56 O 4. 28. 45.8 1 I ,64 59 4O. 59 || 4 || •: Hence the mean Poſition for Jan. O. 18Oo, ſeems to be, R. A. Am. Var. N. P. D. An. Var. Mag. h * Z. zz O / // // Sine. Tang. Sec. 19. 32.4.1,7 -o, 188 || 20.40.35,6 –7,89 4 || 3936 || 2,650 | 2,832 . I 58 Particulars concerning each STAR, didueed from other Authºr. [Ch.AP, II, **- -º-º- º *. w-wºw g *g º - n r - - -º-º-º-º-e ----- xxº~~~s x **** * *r -ºr ºr- wr-rºr----E------wºº ºf Frºs. - “-ºrk" -, -, -u- - --~zrº-g wº- ºx-sery. x-ra- +----------~~~~. r www.wºrsºgºrrºsºrºrº Fºx-x-x-xxº~~ \ -*-*- —t—- ~–A–-º- 62. D R A C O N I S. R. A. In Time. P. D. |Mag. | © / A/ h * // Q & // 62 Fl. 1725 296.48. o I9. 47. I2 I7.42. Io 6 I find no Obſervation of this in Flamſteed. It is not in Edit. 1712. Fl. 1725, brought up to Jan. o, 18oo, is, R.A. 19° 45' 54",6. P. D. 17° 25' 49%; & Chap. II.] The Obſervations of each STA R claſſed together. I 59 re-------------- —H. -tuºr —r— —r- T)ate of Obſ, R. A. obſerved. z. Diff. obs". Bar. Ther. Appº P.D. dedē. Mº J) & // - o / // - o / // | Sept. 3, 1794 7, 35.13 || 54, 8, 17 | 29,8o 59 15.34. 7 ; : S. P. 17. 13,6 I 9 * 62 9 5 Hence the mean Poſition for Jan. o. 18do, ſeems to be, R. A. . An. War. N. P. D. An. Var. h Z // // Mag. G /* // // Sine 7. 35.58,3| +7,444 I 5.34.31,2 | + 8, 15 ,963 Tang. Sec. 3,587 3,724. Date of Obſ. | R. A. obſerved. Z. Diſt. obsº. | Bar. Ther. App. P.D. ded”.j Mag. h , , , " , // Or A // ScPt. 21. 1795 || 7. 43.25.7 45.33.32 29,72 62 6.59. 2 7 S. P. 27. 26,3 36 ,90 56 6 S. P. Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. Am. Var. N. P. D. An. Var. Mag. ** h . . // A/ o z z - // Sine. Tang Sec - 7. 44-3O37 + 12,852 {. 6.59.25,4 +8,81 6 *| sº 8,214 — | |- 62. D R A C O N I S. If this Star ever exiſted, I have not had the good fortune to meet with it, when I have looked for it. * * 16o Particulars concerning each STAR, deduced from other Authors. {CHA p, II, - 3. - - gº- g * <--rr y x g-- - - • * * *~ s^ = * * * -- * *. - - * *.x. x X º -x * ... • * . :-------------→----->+ … -r - s—-> ... • - 3r-5 rx’ <--> -- ~~~~zºº 63. D R A C o N I S. *- Long. | Long, 1800. ” Lat. Mag. S o / // S -- o & Wº - o & // 1 2 Ptol. a o. 7.40. o I. I.56.47 78.50. O 4 || Bor, ſeq., lat. Ul. Beigh O. 25. IO. O I. O. I4.35 | 79. 9. O -- 13 Tych. 8 O. 27.47. O I. O.33.58 79.25. O 3 || Auſt. ejuſd. lat, U. Pr. H. I. 27.16. O 2. o. 8.5o 79.25. o 3 38 Hev. E O. 28. I7.43 I. O. I4. I 9 79.27.5o 3 || In flex. 2. Auſt. 46 FI. 17 2, a O. 28.34.2 I 1. o. 6.37 79.26, 17 4 || Seq, in D Bor. 63 I 725. 8 o. 28.31.40 I. o. 3.56 79.27.40 5.6 || In D ſeq., lat. Bor. | . * | The Sign in Pr. H. is manifeſtly a miſtake. R. A. In Time. i P. D. fMag.j * - 4 - O / > // h / // * © f 2. tº 38 Hev. 297. I4.35 I9. 48.58 2O.35.33 3 46 Fl. 1712 297, 20.3O I9. 49.22 20.31. O |..” | 63 1725 297. I5.3o 19, 49. 6 2O.3 I-35 * - j . . || Obſerved by Flamſteed with the Sextant, - Dec. 19, 1681. - Mur. Arc, July 26, 29, 31, 1692; July 1, 3, 1703. Fl. 1725, brought up to Jan. o, 18oo, is, R.A. 19° 48' 51",9. P.D. 20. 14'45". Mag. 5.6. Bradley - - - - - - - - - - - 19° 48' 56*,2, - - 20° 14' 20". - - 5. N This is a Double Star of Dr. Herſchel's Cat. I. 8, q.v. CH ar. II.] . The Obſervations of each STAR claſſed together. I6 I 63. e D R A C O N I S. t Date of obſ. R. A. obſerved Z. Diſt. obs”. Bar. Ther. Appº P.D. ded". Mag - h ſº // to / // . - - o z // Aug. 27, 1794|19. 48.5o | 18.20. 4 || 29,40|56 20.15. 4 || 4 Sept. 21. 1795 48,7 | . I 3 ,72 62 14.56 5.4 - 27. 48,5 I 5 299| 56 54 4 Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. War. N. P. D. An. War. Mag. * h . 2, // O f Z/ // Sine. Tang. Sec. 19, 48.46,o -o, 156 20.14.34,4 – 9:16 4 || 938 2,712 2,890 162 Particulars concerning each STAR, deduced from other Authors. [Chap. rt. - • *s, * ~ *- U R S AE H E V E L II 3. R. A. . In Time. P. D. |Mag. O / // h / // | O / //, . , 3 Hev. II 4.24.23 7. 37.32 20.37.35 6 | In fronte inter aures. 64 F}, 1712 I I 5.33. Cir. wº tº º- iº 29.41. Io $ 5.6 * t - ... • Not in Flamſteed I725. * . Obſerved by Flamſteed Jan. 25, 1696, as in Perſeus. R. A. uncertain. 3 Hev, brought up to Jan. o. 1800, is, R. A. 7° 31' 21".9. P. D. 20° 20' 31". Chap. II.]. The obſervation of each star clºſed together. ... } <-- - -------- - y º 7:--zº-- **w--- Pºzº ºr ºf a wº-ºº-º-ºr rº-rº is - w -- Date of Obſ. Sept. 12, 1797 *iº. - FT--~~~~ ~~~~~~~~~ ºrrºr- cº-r-rºr-rºr * - U R S HE H E V E L I I 3. R. A. obſerved, h / // 7. $2.245 Z. Diſt. obsd. O / // 59.3 I. I 5 x Bar. Ther. 29,49| 52. App P. D. dedd, O / Z/ 2O. 57.23 Mag. S. P. This Star deſerves farther inveſtigation"; but I have not any other Obſervation of it. ſ Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. - N. P. D. An. Var. Mag. h ſº Z/ a/ O / // A/ Sine. Tang. Sec. 7, 52.43,3| +6,147 29.57.37.7 | +9, 14 || 5 || 934 || 2,610 | 2,795 Date of obſ, R.A. obſerved. Z. Diff. obs'. Bar. Ther. App. P.D.ded. Mag| h ºf // • * Z. o / // Aug. 25, 1794| 7. 56.56,9| 53. 8.37 || 29,44 || 62 14.34.25 6 || S. P. Sept. 21. 1795 57. 6,7 49 ,72 | 62 36 6 S. P. 22. 7 44. ,69 || 6o 3 I 6 S. P. 27. w 8 452.5 290 56 | 33 6 S. P. Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An. Var. Mag. h A // - // o . A // // S} T S 2 Iſles ang. ČCa 7' 57.445) #7,537 || 14-35. 1,1 | +9,85 || 6 ||,968 3,843 3,972 164: Particulars concerning each STAR, deduced from other Authors. [CHAP. II. of *** ***…*** . . . . . . . ~ * * :- - - -- sºws:-------------->==---> - * ~ *- Fºº F.T. --- a-, -, ºr ºx-º-º-º: 64, e 1. D R A C O N I S. sº Long. Long. 18oo. Lat. Mag, | d S o º A/. S 0 / // & O / // 32 Tych. e O. : I. 4... O O. 3.50.58 77.3 F.30 || 5 || Inter i.e. brach Cephei informis; 39 Hev. e o. I-38.22 o. 3.34.58 77.3O.34 5 47 Fl. 1712. e I O. 2, 7.35 O. 3.39.5 I 77.29. O 5.6 Inform. Prope brach Cephei, 64 I 725, e I o. 2. 7, 18 o. 3.39.34 77.28. Ho 5.6 R. A. In Time. P. D. Mag, o z. z/ n . . . O / // 39 Hev. 2.99.24. O 19. 57.36 26. 7.40 4.7 Fl. 1712 | 299.34.30 I 9. 58.30 26. I.40 64. 1725 2.99.36. O 19, 58.24 26. 2. Io Obſerved by Flamſteed with the sextant, - Dec. 19, 1681. Mur. Arc, July 29, 31, 1692; July 9, 1703. Fl. 1725, brought up to Jan. o. 1800, is, R.A. 19° 59' 38",6. P.D. 25° 43' 56". Mag, 5.6. **. 65. e 2. D R A C O N I S. e 2, not obſerved by Hevelius. R. A. In Time. P. D. | Mag. | * O / // h * /a: o z º. | - - 48 F1. 1712. e 2 299.45, o | 19, 59. o 26.13.30 || 7 || 65 I725. € 2 299.45-39 I9. 59. 2. 26. I4. Io 6.5 | Obſerved by Flamſteed with the Mur. Arc, July 29, s I . 1692; called in both 7 Mag. . Fl. 1725, brought up to Jan. G. 18oo, is, R. A. 20% of 19",2. P. D. 25° 55' 51". Herſchel (Double Stars, VI. 38.) ſtates e Draconis 64 or 65 as Double. Diſtance about 2'. The Obſervations of each STA R claſſed together. 165 I had looked carefully for this Star Sept. 17, 1794, and could not find it diſappearance or removal: but I certainly ſaw it on the two nights above; as though very faint. *— 64. e 1. D R A C C N I S. Date of Obſ. R. A. obſerved. Z. Diſt. obs”. Bar. |Ther. App P.D. ded". Mag. - h / // o / // O / // . Aug. 8, 1794|19, 59.18 12.50.2O | 29,65 58 25.44.54 6 Face W. * 25. I 739 | 28 ,44|| 62 | 47 5 - - E. Sept. 17. 16,6 38 ,39| 62 37 || 6 Sept. I 2. 1797 19,5 Oćt. I4. r 17,6 2. I. 17 Theſe do not ſatisfy me. The mean Poſition deduced from them, for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An. Var. Mag h . / // // O / / /* // Sine. Tang. Sec. |19. 59.18,7| +o,664 25.44, 9,4 - Io,02 || 5.6 991 2,073 2,301 65, e 2. D R A C O N I S. Date of Obſ. R. A. obſerved. Z. Diſt. obsd, Bar. Ther. Appº P.D. ded". Mag. h * // O A // o A // Sept. 12, 1797 - - - | 12.39.22 || 29,40|| 52 25.55.53 7 Oćt. 21. 2O. O. 3 5 § so? 46 23 7.8 || Good Obſervation. Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An. Var. Mag. h / // // O / / / A/ Sine. Tang. Sec. 29. 9. 5* | +9,682 25.55.14.9 || – 10,02 || 7.8 ||,899 || 2,057 2,287 | { .. ; and ſuſpected its alſo Oét. 14, 1797, 166 Particulars concerning each STA R, deduced from other Author, [Char. II. —s. -ºr-sºn * - a 67. & D R A C O N I S. \ Long. Long. 1800. | Lat. S O / // S O / // O / //, &b 13 Ptol. º II. 22.5o, o o. 17. 6.47 77.5o. o 4 || Auſt, ſeq. lat. [] . Ul. Beigh O. I 3.3 I. o O. 18.35.35 77.36. O -- I 2 Tych. 6 O. I 5.2 I. O || O. 18. 7.58 78. 9.30 4 || Bor. lat. ſeq. 4o Hev. O. I 5.48, 6 O. 17.44.42 78. 9. O 4 || In flex. 2. med, Auſt. 49 Fl. 1712. 6 o. 16. 17.23 O. 17.49.39 78. 7. I 5 5 || Seq, in D Auſtr. 67 I 725. 6 o. 16.13.43 | O. 17.45.59 78. 7.4O 5 || In D ſeq., lat. Auſt. R. A. In Time. P. D. Mag O. / // h / // o / // 4o Hev. 3OO. I 3. 5 2O. O.52 23. 7. O 4. 49 Fl. 1712 3OO. 23. O 2O. I. 32 22. 59.4O 5 67 I 725 3OO.2 I.30 20. 1.26 23. O.2O 5 Obſerved by Flamſteed with the Sextant, - Dec. 19, 1681. Miur. Arc, July 26, 29, Sept. 28, 29, Oét. 3, 1692; July 3, 1703. - R Fl. 17:5, brought up to Jan. o. 1800, is, R.A. 20° 2' 3",o. P. D. 22° 41' 43°. Mag. 5. Q- 5. Bradley - - - - - - - - - - - 20° 1' 52',3. - - 22° 41'44". - CHAP. II.] The Obſervations of each ST A R claſſed together. 167 +— -m-- g 67. 6 D R A C C N I S. Date of Obſ, R.A. obſerved. Z. Diff. obsº. Bar. Ther. App P.D. ded. Mag. | - h / // O / // o / // Sept. 5, 1795| 20, 1.52 | 15.52.57 29,50 | 66 22.42.15 5 Face W. I4. z. 52 59 || 3o,05 || 62 17 | 5.6: - - E. º e s Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. War. N. P. D. An. Var. Mag. h / // // O / // // Sine. Tang. Sec. 2O. 1.51,2 | +o,316 22.41.5o,2 | – Io, 16 5 || 3922 2, 39 I 2,59 I Pate of Obſ. R. A. obſerved. Z. Diff. obsº. Bar. Ther. App P.D. ded. Mag, - h / // O / // © Z // §Pt. 27, 1795 || 8. 3.27,5| 59. 1.13 29,90 56 20.27.20 7 || S. P. Oćt. 2. * 27 I 2 27 I | 62 I 9 7 || S. P. Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. | An. Var. N. P. D. An. Var. Mag. h / // . . . . . .” // Sine. Tang. Sec 8. 4- 7.9 || 4-6,138 || 20,27,49,o +10,32. 7 || >937 2,679 2,860 168 Particulars concerning each STAR, deduced from other Authors. [CHAP. II, - -*. 69. D R A C o N I S. Not in Hevelius; nor in Flamſteed, Edit. 1712. R. A. In Time. - P. D. Mag. o / // h A // G a // 69 Fl. 1725 3OI.44-3C 20. 6.58 I4.29. IO 6 - $ Obſerved by Flamſteed with the Mur. Arc, July 9, 1703. Fl. 1725, brought up to Jan. O. 1800, is, R.A. 20' 4' $3.4. P. D. 14° 10' 4". CHAP. II.] The Obſervations of each STA R claſſed together. 169 , 69. D R A C O N I S. Date of obſ, R.A. obſerved. z. Diff. obº. Bar. Ther. App P.D. ded Mag| - *. h / // , o z z. O / // Sept. 19. 1795 |2O. 5. 9 || 24.29.41 29,56| 64 || 14. 5.2 I 6 . 2 I • 9,7| 37 || ,72 62 25 6 22. tº ~ * * 4O ,69 6o 22 6.7 Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. War. N. P. D. An. War. Mag. - h / // // - O / // // Sine. Tang. Sec. 20. 4.59,2] – 1,487 14. 4.54.3 —ro,4o || 6 || >979| 3,986 |4, 199 Date of Obſ. R. A. obſerved Z. Diſt. obs'. Bar. Ther.|App P.D. ded". Mag. h X // O * // - O / // Sept. 26. 1794 8. 12.24,6| 53.10.38 29,60 || 48 || 14.36,27 6 || S. P. 28. 24,8 38 585 4-9 27 7 S. P. l Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. | An. Var. N. P. D. An. Var. |Mag. h / 2. // o / //, // Sine. Tang. Sec. 8, 13. 8,5| 4-7,354 || 14-37, 8,9| +11:00 6.7|,967 3,834 3,962 17o Particulars concerning each STAR, deduced from other Authors, [Chap. II. ** Obſerved by Flamſteed with the Sextant, - Jan. 26, 1682. Mur. Arc, Sept. 22, 28, 1691; July 31, I Fl. 1725, brought up to Jan. O. 1800, is, R. A. 20° 21' 2",6. A beautiful Double Star of Heiſchel's Cat. III. 7o. q. v. 1. x C E P. H. E. I. Long. Long, 1800. Lat. Mag, S o / // | S o / // o Z // 1 Ptol. . . k. I. 9. o. o 2. 3.16.47 75.40. O || 4 in pede desiro. U1. Beigh I • 2 1.55. O | I. 29.59.35 | 75.45. O | IO Tych. % I - 27.33. O 2. O. I 9.58 75.27. O 4 || In dextro pede. Pr. H. I. 27.24. O 2. o. 16.5o 75.23:12 4. - 4 Hev. % I. 28.25. 5 2. o. 21.4 I 75-26.43 | 4 || In dextro crure. I Fl. 1712. 2 I. 28.5o.35 | 2, O.22.51 75.27.46 || 4.5 || In pede pree. I 1725. K. 1. 28.5 i. 22 2, c. 23.38 || 75.28.30 5 || In crure dextro. R. A. In Time. P. D. Mag. o * / // h / // O / // 4. Hev. 3O4.45.2 I 2O. I 9. I I 3.2O. 52 *. I Fl. 1712 324-32. 5 2O. I 8. 8 I 3. I 4.35 k I 725 3O4.3C. O 2O. 18. O 13-14-35 - 2. A U R S A. Long Long, 18Co. Lat |Mag. | S o / // S o / // o / // 2 Ptol. . . A 2. 25.5o, o 3. 20. 6.47 43. O. O 5 || 2 inter Og, praec. t]]. Beigh 3. I 5.43. O 3, 2 O.47. 35 43.48. O || - 3 Tych. A 3. 16. 8. o 3. 18.54.58 44.22. O | 5 || 7 Contigua, 7 Hey. A 3. 17. 9.32 || 3. 19. 6. 8 44.3.2. 6 || 5 || Ad Oc, præc. 72 F. 1712, A 3. I7. 19.32 || 3. I 8.5 1. 48 44-33. I 4-5 || 2. ad Oc. praec. 2. 725. A 3. I 7. 19. I 5 3. I 8.5I.31 44-33. O 5 | Inter Oc. praec. R. A. In Time. P. D. Mag. O / // h / // O / // - - 7 Hey. I 2 I. 22.3 I 8, 5.30 23.49.2O * 72 F. 7 12 I 2 1.38. So 8, 6.34 23.5 ! .45 2 I 725 121.38. o 8, 6.32 23.5 i.40 Obſerved by Flamſteed with the Sextant, - Oćt. 21, 1681. 692; July 3, 1703. P. D. 12° 52' 48". Mur. Arc, Jan. 13, 23, 25, 1696. Fl. 1725, brought up to Jan. o. 1800, is, R. A. 8° 16' 46%.5. P. D. 24° 1 I’ * 37”. CHAP. II.] . . . The Obſervations of each STA R claſſed together. 1. 2 C E P H E I. Date of Obſ. R. A. obſerved. Z. Diſt. obs". Bar. Ther. App P.D. ded. Mag, h / // o / // - O / // Sept. 17. 1794/20. I 5.33,6: 25.40.32 || 29,39| 62. 12.54.28 5 27. . . . 34-22 33 ,7o 48 27 Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. War. N. P. D. An. Var. Mag. h / // . // O / // - // Sine. Tang. Sec, 2O. I5.20,6 - 1,769 | 12.53.48,3| – 1 1,2O 5 || 1974 || 4,368 4,481 =- 3. Date of Obſ. Sept. 28. 1794 29. l R. A. obſerved. | h / 8. I 5.59,8 59, O // . R. A. h z ſº 8. 16.31,8 Z. Diſt. obsd. O f A/ 62.44.36 3455 An. Var. f/ + 5,535 Bar. Ther. 29,85 || 49 996 || 54 | N. P. D. O A // 24. Io.43,8 2. A U R S A. Appº P.D. ded". Mag. O. / // 24. I I. O. IO-59 An. Var. // + I 1,21 Hence the mean Poſition for Jan. o. 1800, ſeems to be, Mag. 6 S. P. S. P. Sine. Tang. Sec. 39 I 2 2, 227 2244. I 172 [CHAP. II. Particulars concerning each STAR, deduced from other Æuthors. Not in Hevelius, 73 Fl. 17 t 2 3 1725. 7 I Obſerved with the Sextant, - Oét. 21, 1681. Mur. Arc, Jan. 13, 23, 25, 1696. R. A. O z // I 22.49.30 I22.5o. 3O —º- 3. * 1. U R S A. # In Time. h / // 8. I 1.18 8. II.2.2 P. D. o f // 23.58. Io 23.58. o Mag, 6 wº * º Fl. 1725, brought up to Jan. o. 18oo, is, R. A. 8° 21' 31%. P. D. 24° 18' 35",6. The Magnitudes of ºr 1. and ºr 2. ſeem to be tranſpoſed in Flamſteed 1725. 3 Ptol. 7, Ul. Beigh 2 Tych. 7 3 Hev. 7- 74. Fl. 1: 12. ºr 4. 1725. 7, 2 3 Hev. 74 FI. I 7 I 2 4. I 725. 7ſ 2 Obſerved by Flamſteed with the Sextant, - Oct. 21, 1681. i Long. O / // 26.20. O 16.34. O I7. IO. O 18. I. I 2 18.29.23 18.29.45 R. A. O A // I 2.2.24. 9 I 23. IO.30 I 23. I I, O Long. 1800. i O / // 20.36.47 2 I. 38.35 19.56.58 19.57.48 2O. I. 39 2O. 2. I In Time. h / // 8. 9.37 8. I 2.42 8. I2.44 4. T 2. U R S AE. Lat. ° a ' // 43. O. O 43.45. Q 43. 55.30 43.57.4C 43.59.38 43.59.35 P. D. 0. / // 24.33. IO 24, 38.3o 24.38.49 Mag. Mur. Arc, Jan. 23, 25, 1696. Inter Oc, ſeq. Sub, Oc. fin. 2 ad Oc. ſeq. | Inter Oc. ſeq. s | Ad Oc. ſeq. Aur. Fl. I 725, brought up to Jan. o. 1800, is, R. A. 8. 22' 43%8. P. D. 24° 59' 26",9. .*** Chapi. II.] . . . The Obſervations of each S T A R claſſed together. 173 −z−------- - - 3. T 1. U R S AE. Date of Obſ. R.A. obſerved. z. Diff. obº. Bar. Ther. App. P.D.ded. Mag." h / // O / // - O / // Sept. 26, 1794|8. 20.44,6| 62,51.24 29,60 || 48 24.17.48 5 || S. P. 27. 44-34. 2O 37 I 47 44. 6 || S. P. 28. 44-33 | Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An. Var. Mag"; h z ze // o / // " | // Sinc. | Tang. Sec. 8. 21. 16,7 +5,483 24, 18.31, I + II,56 5.6 39 II | * 2,429 4. a 2. U R S A. Date of Obſ. R. A. obſerved. Z. Dià, obs". Bar. Ther. Appº P.D. ded". Mag. | h /* // O / // O / // $ept. 28. 1794 8. 22, 2,8 || 63.32.36 29,85| 49 24.59. 4 4 || S. P. 29. 3 32 296 54 O | 5.4 || S. P. Hence the mean Poſition for Jan. o. 1 Soo, ſeems to be, R. A. An. Var. N. P. D. An. Var. Mag. h / // /, / O / // // Sine. Tang. Sec. 3. *347| +5.396 || 34.59.49.7 | + 1,69 || 5.4 |,906| 2, 4, 2,366 I74. Particulars concerning each STAR, deduced from other Author. * $ : * <. * IC HAP." II, Aº * , -------- * +-y -ºr----- <=x- -r- * -v-vºus, Not in Hevelius; nor in Flamſteed, Edit. 1712. 73 Fl. 1725 R. A. O / // 3O8.49. O D R A C O N I S. In Time. h / // 2O. 35. 16 P. D. O / // 16. 7.30 Mag, 5.6 Obſerved by Flamſteed July 16, 31, 1692; July 3, 9, 1703. This brought up to Jan. o. 1800, is, R. A. 20° 34' Io",4. P. D. 15° 44' 30", 1. 6, U R S AE. Not in Hevelius, * R. A. In Time. P. D. {Mag. O Z // h / // O / // 77 FI. 1712 1 27.28. O 8. 29.52 24.18. O 6 5 I 725 I27,25. O 8, 29.40 24. I 5-5C 5 Obſerved Jan. 23, 25, 1695. Fl. 1725, brought up to Jan. o. 18oo, is, R. A. 8° 39' 30", 1. P. D. 24° 33' 47",3. ** Chap. II.] The Obſervations of each STAR claſſed together, I75 3 ** : * * * * *__> - - - --- - - --- :- -º-, z-z-z-z--º-º: -. - -- - - -aº'e , . . * Date of Obſ. R. A. obſerved z. Diſtrobº. | Bar. Ther.App. P.D. ded Mag." { h / // O / // *. o z // Sept. 17. 1794 | 8, 29.23,6|| 43.37. I 29,35 | 61 5. 2.27 7 || S. P. 26. 23,6 4. ,6o || 48 3 I 6 S. P. Hence the mean Poſition for Jan. o. 183o, ſeems to be, R. A. An. Var. N. P. D. An. Var. Mag. h / // A/ So Z // // Sine. Tang. Sec. 8. 39.57,5 + 15,016 || 5. 3. 18,4 | + 12,28 7.6 || >996 || 1 |,307 || 1,351 | —r- 73. D R A C C N I S. Date of Obſ. R. A. obſerved. Z. Diff.cbs. Bar. Ther. Appº P.D. ded". Mag.il - h / // o / // O / // - - - t Sept. 17, 1794/20, 34, 4,6] 22.5o.16 || 29,35| 61 | 15.44.48 6.5 27. - 554. 2O 37 O 47 f 44 F | Hence the mean Poſition for Jan. o. 1850, ſeems to be, || R. A. An. War. N P. D. An. Var. Mag. h / // // o / // // º - Sine. J ang. | Ssc 29, 3358.6 -o,645 15.44. o.o || – 12,49 5 || >962 3,549 3,683 --- -- | 6. U R S AE. P* of obſ, R.A. obſerved. Z. Diff. obº. Bar. Ther. App P.D. deg. M. . h Z // - O * // Q / // tº " H Sept. 26. 1794 8. 38.46,6| 63.11.37. 29,69| 48 || 24.38. 3 || 6.5 || S. P. 27. 4734 32 27 O || 4-7 37.58 - - || S. P. 28. * 4733 38 335| 49 38. 4 || 5.6 || S. P. Hence the mean Poſition for Jan. o. 1862, ſeems to be, R. A. T An. Var. N. P. D. An...Var. Mag, h : * // // o / // // ~ || S. T w - ; ſ] e. ang. Sec. 8. 39.18,5| + 5,306 || 24.38.58,8 + 12,83 || 6.5 º 2, 179 2,398 176 Particulars concerning each STAR, deduced from other Authors, •. [CHAP, II, * ---------. Ex-F-ºr: 75. D R A C O N I S. Not in Hevelius; nor in Flamſteed, Edit. 1712. R. A. In Time. P. D. Mag. o / // A / o / // . . .* 75 Fl. 1725 31 I.29. O 20. 45.56 9. 40.5o 6 § Obſerved July 31, 1692 ; July 9, 1703. FI. 1725, brought up to Jan. o. 1800, is, R. A. 20° 40' 27”,6. P. D. 9° 16' 48". 74. D R A C O N I S. Not in Hevelius; nor in Flamſteed, Edit. 1712. R. A. In Time. P. D. Mag| o / // h / // o / 7. || 74. Fi. 1725 3 II. 24. O 2O. 45.36 Io. 2. O | 6 | f - - - Y Obſerved July 31, 1692 ; July 9, 1703. & This brought up to Jan. o. 1800, is, R. A. 20° 40' 31",9. P. D. 9° 37' 58°,4. CHAP. II.] The Obſervations of each STAR claſſed together. 177 Date of Obſ. R. A. obſerved. Z. Diſt. obsd. Bar. Ther. Appº P. D. ded. Mag. - h / // O / // o / // Oćt. 6, 1795 |2O. 39. 7,8 29.18.46 29,72 54 9.16. 9 7 7. 7,8 46 ,64| 55 9 || 7 Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An. Var. |Mag. h / // // O / // // - Sine. Targ. Sec. 20, 38.48,7| –3,251 9. 14.57,9 – 12,83 || 7 || 987 6, 14 || 6,222 7 5. D R A C O N I S. Date of Obſ. R. A. obſerved. Z Diſt, obs". Bar. Ther.|Appi P.D. ded".|Mag h / // O Z // O / // Sept. 29. 1795 |2O. 40.27 | 29, 17.46 29,65 64 9. 17. 9 6 | 22. - 28 4O ,69 6o 15 5.6 Oćt. 2. 27 * * * - - || - - || - - - || 5.6 º 6. 26,8 46 372 54. 9 6 Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An. Var. Mag. | h A // .// o / // // Sięe. Tang. Sec. 2O. 4o. 8,3| – 3,202 9. 16.30,9 | – 12,99 || 5.6 || 987 6,123 6,204 74. D R A C O N I S. Date of Obſ. R. A. obſerved. Z. Diff. obs". Bar. Ther. App. P. D. deda. Mag. - h / // o A Z/ - O / // Sept. 20, 1795|20, 40.44 28.57. 4 || 29,65| 64 || 9.37.52 6 22. 43,5 - - - || - - || - - - - - || 6.7 Oćt. 2. 43 2. 27 I 62 | 54 6.7 - Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An. Var. Mag, - h / // a O / // A/ Sine. Tang, Sec. so. 49.24.9 | – 2,963 9-37. I 4, I - 12,91 6.7 || ,986 5,901 |sº A a 178 Particulars concerning each STAR, deduced from other Authors. [CHAP. II, 4. C E P H E I. - Not in Hevelius. * -- e - ... " • * R. A. ..In Time. | P. D. Mag. o / // h z // | o / ; // * , 4 Fl. 1712 399.46. O 2O. 39. 4. - 24, 27.3O 6 4. I 725 3O9.41.30 20, 38.46. 24, 27.39 || 6 || Obſerved Sept. 22, 28, 1691. F1, 1725, brought up to Jan. o. 1860, is, R. A. 20° 40' P. D. 24° 37' 55",3. Long. Long. I 800. Lat. Mag S O / // S O / // o A // 4. Ptol. 2. 26. Io. o 3. 20.26.47 47. IO. O 5 || In fronte 2* piec. U1. Beigh 3. I G.25. O | 3. 21.29.35 47.54. Ö : || 4 Tych. £ 3. I 8.25. O | 3. 21. I I, 58 47.5o.30 - || 4 || Sup. Oc. dext. I o Hev. 6 3. 19.24, 18 || 3. 21.20.55 47.52. O 4. || Ad Aur, praec. 7 9 F}. I 7 I 2. & 3. 19.39. IO 3. 2 I. I 1.26 47.54:43 4 || In fronte 2m praec. . . . 8 1725. & 3. 19-39. Io 3. 21. I 1.26 47.54.45 || 5 || In fronte 2* prec. \ - R. A. In Time. P. JD. | Mag. O A // h / // ... O / // 1 O } ſo v. y 28, 4.44 8. 32, 19 21. 1.11 7.9 F1, 17 t 2 I 28.3 I. O 8. 34. 4 2 I. I.G.2C 8 I 725 I 28.3 I. O 8. 34. 4 2 I. I 3.2O Obſerved by Flamſteed with the Sextant, - Oét. 21, 1681. Mur. Arc, Mar. 14, 1691 ; Jan. 13, 25, 1696. Fl. 1725, brought up to Jan. o. 1800, is, R. A. 8° 44' 28”,8. P. D. 21. 36' 51%5. char. II.] The obſervations ºf each st A R claſſid tºgether. P79. - **--— + --~~~~~~~ ---> -- > * Date of obſ, R. A.obſerved. z. Diff. obs'. Bar. Ther. App. P.D. ded Mag." h / // O / // o / // | Sept. 14. 1795 |20. 40.35 | 14.30.28 30,05 || 62 || 24. 4.44 6 | 19. 36 25 29,56| 64 47 6 : 2 I • 36,7 2 2. ,72 62 5O 6 4. C E P H E I. Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. Am. Var. Mag. h / // // O , , , ºy Sine. Tang. Séc. 20. 41. 7,3| +o,787 24. 5.48,8 – 12,97 6 913. 2,236 2,449 4 | *** 8. e U R S AE. Date of Obſ. R. A. obſerved. Z. Diff. obs. Bar. Ther. Appº P.D. ded". Meg. h / // o / // o / // Sept. 14. 1795 || 8. 43.49 - a ºn tº - - - - I - - - 5 | I7. 5o,3| 6o. 9.33 29,67 58 21.35.43 6 i 2 I • 4922 32 372 59 42 5 R. A. / // h 8. 44. I 8,O An, Var. // + 5,600 N. P. D. o / // 21.36.31,5 An. Var. // + I 3, 15 Hence the mean Poſition for Jan. o. 1800, ſeems to be, Mag. S; ſles Sec. 22524 2,715 T'ang. | 293O A a 2 18o Particulars concerning each STAR, deduced from other Authors, [CHAP. II. * CHAP. II.] 181 The obſervations of each STAR claſſed together. ==- =r- T)ate of Obſ. Mar. 29. 1793 April 6. 7. R. A. obſerved. h / // 2O. 48.26,7 27 26,2 | R. A. h / // z. Diff. obs'. O / // 45.41.18 22 23 An. War. // – 4,819. N. P. D. O / // . 2O. 47,5514 7, 5.2934 —Er-I An. War. |Mag. // — 13,67 6 | Bar. Ther.|App P.D. ded'. Mag. r O / // 29,51 || 33 7. 6.51,2 6.7 373 47 53.5 5.6 588 || 39 | 54,5 5.6 Hence the mean Poſition for Jan. o. 1800, ſeems to be, S. P. Face W. S. P. - - E. S. P. Sine. Tang. Sec. ,992 || 8,038 8, oo | 182 Particulars concerning each STA R, deduced from other Author. [CHAp. II. -º-º-º-º- +---------ºc---> * * * * 2. - II. G. I. U R S AE, Not in Hevelius. i R. A. In Time. P. D. Mag. - • / / h / 2, O / // - 82 Fl. 1712 I 30. Io.45 8. 4o.43 2 ſ. 56.2O 6 | I I I 725. O I I 3O.I.O.. O 8. 40.40 21.56. O 5 - Obſerved with the Sextant, - O&t. 21, 1681. Mur. Arc, Mar. 14, 169 I ; Jan. I 3, 1696. Fl. 1725, brought up to Jan. o. 1800, is, R. A. 8° 50' 48", 5. P. D. 22° 20' 18",4. I 3. O 2. U R S E. Long. ' Long 1800. Lat. |Mag. S O / ºr S O /* // O / // - 5 Ptol. Gr 2. 27.40. O | 3. 21.56.47 47. O. O 5 in fronte 2m ſeq. Ul. Beigh 3. 7.4-3. O 3. 22.47.35 47.5 I. O 5 Tych. OT 3. 9.44, 39 3. 22.31.28 47.44-3C 4 || Sup, Oc. finiſt. 13 Hev. G- 3. 20.33.27 3, 22.30. 3 || 47.47.27 5 Ad Aur, ſeq. 84 Fl. 1712, aſ 3. 20.58.4 i ! 3. 22.20.57 | 47.48. 5 5 In fronte ſeq. ! 3 1725. a 2 3. 28.58.26 3. 22.39.42 47.48. IO 5 || | R. A. In Time. P. D. Māg O A // h .# /? O / /? 13 Hev. 129.58. 16 8. 39.53 2 I. 32.4O 84 Fl. 1712 I 3 O-39. I 5 - 8. 42-37 2 I-39.4O I 3 I 725 I 3O.39. O 8. 42.36 2 I-39.39 Obſerved by Flamſteed with the Sextant, - Oét. 21, 1681. Mur. Arc, Mar. I4, 1691 ; Jan. I 3, 25, 1696. Fl. 1725, brought up to Jan. o. 1800, is, R. A. 8° 52' 45",8. P. D. 22° 4' 2". This is one of Dr. Herſchel's Double Stars, III. 54, q.v. CHAP. II.] r83. The Obſervations of each S T A R claſſed together. re-— Date of Obſ. Sept. 26, 1794 27. 28. Date of Obſ. Sept. 26. 1794 27. 28. R. A. obſerved: h Z 8, 5o. 4,6. 6 5:3. // R. A. h / 8. 50.38,2 | "Z/ R. A. obſerved. h Z // 8. 52. 2,6 225 233 R. A. h / 8, 52.35, 5 // —º I. I. G. I. U R S AE. Z. Diſt. obs". Q- / // 6o.53. 9. I 2 An. Var. N. P. D. An. Var. // O / // // + 5,455 22.2O.25,5 + I.3,59. 13. a 2. U R S AE. z. Diff, obº. Bar. Ther. App P.D. ded. O Af // O / // 60.37. 3 || 29,60 || 47 22. 3.17 2 37O || 47 16 | An. Var. */ +5,470 ſ Bar. Ther. Appº P.D. ded". Q / // 29,60 47 22. I 9.25 37 O 47 27 ! N. P. D. O / // 22. 4. I7s 3 Hence the mean Poſition for Jan. o. 1860, ſeems to be, An. War. /* + 1 3,7 I Mag. - Mag, 5.4 5.4 Hence the mean Poſition for Jan. o. 1800, ſeems to be, M ag. 5.4 S. P. S. P. S. P. Sine. Tang. |- Sec. 2925 2,433 | 2,630 S. P. S. P. S. P. Sine. Tang. Sec. ,926 2,466 || 2,661 184 Particulars concerning each S T A R, deduced from other Authors. [CHAP. II. - -W---w ** "Y_ C E P H E I H E V E L II 24. R. A. In Time. P. D. Mag. * o ſ // h / // G / // 24. Hev. 33O. 59. 2 22. 3.5 6 2. I I. O 5 || Ad Stellam Polarem inter pedes Borea. Not in Flamſteed 1712, or I 725. 24 Hev. brought up to Jan. o. 1800, is, R. A. 21° 16' 37",7. P. D. 1" 32’ 10”. 76. D R A C O N I S. Not in Hevelius; nor in Flamſteed, Edit. 1712. R. A. In Time. P. D. Mag. O A // h / // O / // 76 Fl. 1725 3I 5.38. O 2 I • 2.32 8.39.39 5 Obſerved July 9, 1703. This brought up to Jan. o. 1800, is, R. A. 20° 56' 29",4. P. D. 8° 15' 52”. D R A C O N IS H E V E L I I I. R. A. In Time. P. D. Mag, O / ?/ h / // o / /* 1 Hev. I3o. I 9. 26 8. 4. I. I 8 7. I 2.30 - 5 In extremitate Caudae.—Yet N93. A - - is called by Hevelius Ultima Caudae. Not obſerved by Flamſteed. • 1 Hev. brought up to Jan. o. 18oo, is, R. A. 9° 6' 5",o. P. D. 7° 44' 12". CHAP. II.] The Obſervations of each S T A R claſſed together. 185 C E PH E I H E V E L II 24. Date of Obſ. R. A. obſerved. Z. Diff. obs'. Bar. Ther. App P.D. ded". Mag. - h a // O / // O / // Sept. 27, 179420, 55.44 - || 37.15.15 29.70 || 47 | 1.19.27 5.6; 28. 44,8 I 7 ,85 || 48 26 : | Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An. Var. Mag, h / // - // o / // // - Sige, Tang. Sec. 2O. 51.26.4 —39,761 I. I 8.29,6 — 13,65 5 ,999 |43,748 43,769 - i I call it 5 Magn. becauſe the Obſervations in 17 93 make it ſo, and I believe them to be right in that reſpect. I ſuppoſe it is from failure in my fight, that the ſame Stars are frequently ſet down in the later Obſervations as of a ſmaller Magnitude than they were in the former. Date of Obſ. Sept. 6. I'795 14. I7. I 9. 76. D R A C O N I S. R. A. obſerved Z. Dift, obs”. Bar. Ther. Appº P.D. ded". Mag. h & // • . Cy / // O / // 2O. 56.35 | 3o.20.37,5 29,60 | 68 8.14, 17, 5 || 6 36 4. I 30,05 || 62 19 6.5 34.8 44 29,67| 58 I O 6 34 445 56 64 Io 6.5 Hence the mean Poſition for Jan. o. 1800, ſeems to be, An. Var. R. A. N. P. D. An. Var. Mag. h A // . a/ o z z. // Sine. Tang. Sec. 20. 56,40,3| –3,565 8.13.20,9 — 13,94 || 5.6 || ,989 6,920 | 6,992 { - D R A C O N I S H E V F L I I I. Date of Obſ. R. A. obſerved. Z. Diff. obs". Bar. Ther. App P.D. ded. Mag. - h / // O / // O / // Sept. 26, 1794. 9. 6. 17,6| 46.22.18 29,60 || 47 7.47.5 I 4. S. P. 27. 18,4. 16 ,7o 47 49 4. S. P. 28. I8,3 23 585 || 48 56 4. S. P. Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. Am. Var. N. P. D. Am. Var. Mag. h / // zz, o A // 2. Sine. Tang. Sec. 9. 7.2124 -F9,728 7.48.55, I + 14,62 || 4 || ,991 || 7,287 7,355 *— -º- | - B. b 186 Particulars concerning each STAR, deduced from other Authors. [CHAP. II. 77. D R A C O N I S. Not in Hevelius; nor in Flamſteed, Edit. 1712. R. A. In Time. P. D. |Mag. O / // h -/ // O A // 27 F1. 1725 3.17.39.30 21. Io.38 13. 8.5o 5 Obſerved July 9, 1703. This brought up to Jan. o. 1800, is, R.A. 21° 9' 2",8. P. D. 12° 41' 45". 23. h U R S E. Long. Long. 1800. Lat. - Mag. S O / // S O / // O f // 8 Ptol. h 3. 2.3O. o 3. 26.46.47 44.2O. O 4 || 2. in Collo ſeq. Ul. Beigh 3. 22.49. O | 3. 27. 53.35 44-54. O - 8 Tych. h 3. 25. 2. O 3. 27.48.58 45. 3- o 4 || Seq. in A Colli. Pr. H. h 3. 25. 2.5o 3. 27.55.40 || 45. 6.40 3 || 2 I Hev. h 3. 26. I.46 || 3. 27.58.22 45 - 5 - O 4. || Bor. in Collo. 97 Fl. 1712. h 3. 26.29. 5 || 3. 28. I.2 I 45. 7. I 9 || 4-3 || In A Colli ſeq. 23 1725. h 3. 26.28. Io 3. 28. o. 26 45. 7. 4. 4 || 2, in Collo ſeq. | - | R. A. In Time. P. D. Mag. { O / // h / // - O / // : I Hev. I 35.59. IO 9. 3-57 25.3 I. I 5 97 Fl. 1712 I 36.40. O - 9. 6.40 25.38. O 2 3 1725 I 36.38.30 9. 6.34 25.38. O Obſerved by Flamſted Mar. 12, 14, 1691. - Fl. 1725, brought up to Jan. o. 1800, is, R. A. 9° 15' 35%. P. D. 26° 5' 12". - Chap. II.] 187 The Obſervations of each STA R claſſed together. 77. D R A C O N I S. Date of Obſ. R. A. obſerved. Z. Diſt. obs". Bar. Ther. Appº P.D. ded". Mag. h / // O / // o A // Sept. 26. 1794; 21. 9.23,6|| 25.52.48 29,60 47 || 1 2.42. I2 5 27. 2234 47 27C 47 I 3 6 - Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. } An. Var. . | N. P. D. An. Var. Mag. h / // // o / // // Sine. Tang. Séc. 21. 9. 12,6| -o,952 | 12.41. Io, I – 14,74 5.6 || 975 4,442 4,553 23. h U R S AE. Date of obſ, R. A. obſerved. z. Diff, obº. Bar. Ther. App P.D.ded Mag| h / // O A // O * // - Sept. 26. 1794. 9. 15. 6,6|| 64-37. o 29,60 47 | 26. 3.32 4 || S. P. 27. 6,4 2. 37 o 47 34. 4 || S. P. Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An. Var. Mes h / // // © A // // Sine Tang Sec 9. I 5.35,8 || --4,854 26, 4,43,5 + 15, 12 4 || ,898 || 2,043 2,274. B b 2 188 Particulars concerning each s T A R, deduced from other Authors. [CHAP. II. * 22. U R S AE. iNot in Hevelius. In Time. P. D. Mag Q / // h / // O & // 95 Fl. 1712 I 36.2 I. O 9. 5.24 16.28.2O 7 || 22 1725 I 36. 18. O 9. 5. I 2 16.28.35 7 R. A. obſerved by Flamſteed Jan. 13, 25, 1696. Fl. 1725, brought up to Jan. o. 1800, is, R. A. 9° 16' 19",6. P. D. 16° 55' 45°. 6 Ptol. U1. Beigh 6 Tych. 2O Hev. 96 Fl. 1712. 24. I725. Edit. 16 Io. 2O Hev. 96 Fl. 1712 24. I 725 Obſerved by Flamſteed with the Sextant, - Oét. 31, 1681. Mur. Arc, Mar. 17, 1694; Jan. 13, 1696; Mar. 2, 1703. Fl. 1725, brought up to Jan. O. 18oo, is, R. A. 9° 16' 58",3. P. D. 19° 18′ 4’ d - d d d d Long. O / A/ S 18.25. O 2O 24.42.30 22. O.38 22. I. 52 :3. R. A. O / // I 35-53. I 2 I 36.36. O 136.39. O 28. IO. O. 2 I-35.22 24. d U R S AE. Long. 18oo. O A // 22.26.47 23 27.29.28 23.31.58 23-32.54 In Time. h / //, 9. 3-33 9. 6.24 9. 6.36 -*-*— * 23.29-35 23.34. 8 * Lat. O / // 5O.3O. O 5 I. 18. O 51.36.30 5 I. I 3. I 2 5 I. I 3. 2 5 I. I.3.4O P. D. O / // 18.42-42 I 8.5 I. O 18.5o.5o 6 Tych. ſhould probably be, Long, 3 S. 20' 42' 30"; but the miſtake is the ſame in - 5 5 4-5 4-5 Mag. y ! Ad Aur, fin. } {- In Cervice. In extrem. Aur. In extrem. Aur. In extrem, Aur. Af C nar. ti.] The Obſervations of each STA R claſſed together. I 89 22. U R S AE. Date of obſ, R.A. obſerved z. Diff. obs'. Bar. Ther. App P.D. dei Mag. h / // o A // - * o / // Sept. 14, 1795 | 9. 15.1o 55.28.19 30,05 | 62 | 16.54.13 5 || S. P. 2 I. IO, 2. 26 29,72 || 59 2O 6 S. P. 22. If I 23 ,69 || 6o 18 § S. P. | Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. | An, Var. N. P. D. An. Var. |Mag. * h . . . - */ o / // . // - Sine. Tang. Sec. 9. 1541,7| +5,967 | 16.35.15.4 +15,98 || 6 || 956 3,287| 3,436 24. d U R S AE. Date of Obſ. R. A. obſerved. z. Diff, obs, Bar. Ther. App P.D. ded. Mag. | h / // O A // F- O A // ** Sept. 17. 1795 || 9. 16. 3,8| 57.51.18 29,67| 58 || 19.17.18 || 4.5 || S. P. I 9. 3 22 ,56| 64 22 5 S. P. 2O. 4. I6 ,65 64 I6 4 || S. P. Hence the mean Poſition for Jan. O. 18Oo, ſeems to be, R. A. An. Var. N. P. D. | An. Var. |Mag. A z z // O / // A/ Sine. Tang. Sec. 9. 16.32.3 F5,566 | 19.18, 6.6 | + 14,93 5.4|,944, 2,85; 3,62; *** *-*.*.*... -- I 9o Particulars concerning each STAR, deduced from other Authors. [CH AP. II. 7. C E P H E I. Not in Hevelius. R. A. In Time. P. D. Mag. - o 2 // h / // - O / // ſ F]. #: } 3.2O.30 2.I. 2 I.22 24.31.40 || 6 || Obſerved Sept. 21, 1691 ; July 9, 1703. This brought up to Jan. o. 1800, is, R. A. 21° 23' 32",3. P. D. 24° 3' 16”. 27. U R S E. R. A. In Time. P. D. Mag. o / // h z & O / // - 24. Hev. I 37.27.49 9. 9.5 I I6. I 2. O 6 || Supra Cervicem. Io2 Fl. 1712 I 38.32. O 9. I4. 8 16. 23.2O 6 - 27 I 725 I 38.28. I 5 9. I 3.53 16.23.55 6 Obſerved by Flamſteed Jan. 25, 1696. Fl. 1725, brought up to Jan. o. 18oo, is, R. A. 9° 24′ 48",3. P. D. 16° 52' o'. CHAP. H.] I 91 The Obſervations of each S T A R claſſed together. 7. C E P H E I. Date of Obſ. R. A. obſerved! Z. Diff. obs'. I Bar. Ther. Appº P.D. ded". Mag. h / // O / // o / // Sept. 17. 1795|21. 23:49,8 14.30.34 29,67| 58 24. 4.38 6 I9. 49 37 ,56|| 64 35 | 7 Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. | An. Var. [ N. P. D. An. Var. Mag. h / // // o / // // Sine. Tang. Sec. 2.I. 23.52,O | + 1, 184 24, 3.4O, I – 15, 57 7.6 º 2,239 2,452 27. U R S AE. Date of obſ, R.A. obſerved z. Diff. obs'. Bar. Ther. App. P.D.ded Mag. h / Z/ O / // O A // Sept. 14, 1795 || 9. 23.41 55.24, 7,5 30,05 || 62 | 16.5o. 1 6 S. P. 2O. 41 a 9 29,65 64 | I 6 || S. P. Hence the mean Poſition for Jan. o. 1850, ſeems to be, R. A. Am. Var. N. P. D. An. Var. Mag. h *- / // A/ O / // // Sine. Tang. Sec. 9. 24. II,9} + 5,848 16.51. 1,7 | + 15,56 6 || >957 3,391 || 3,450 **- --------- I 92 Particulars concerning each STAR, deduced from wher Author. ſchar. II. 8. G C E P H E I. Long. Long. 1800. Lat. Mag - S O / // S O / // G & // - 3 Ptol. tº 3 O. 7.2O. O I. I.36;47 7 I. Io. O 4. | In cinº ad dextr. Lat, U1. Beigh O. 27.37. O | I. 2.4. I-35 7 I. I 5. O 1 Tych. 3 I. O. 13. O I. 2.59.58 7 I. 7. O | 3 || In Cingulo. Pr. H. G 1. o. 16.2O I. 3. 9. IO 7I. 4.3O 3 II Hev. 3 1. o. 58.3O I. 2.55. 6 7 I. 7. I 2 3 || Cingulum. 8 FI. 1712. 3 I. I. 18.35 I. 2.5O.5. I 71. 8. I 5 3 || In Cing. ad lat, praec. 8 1725. 3 I. I. I 7.53 I. 2.5 O. 9 7 I. 9. O 3 || In Cing, ad dext. Lat, R. A. In Time. P. D. Mag O / Z/ h / // O / // II Hev. 32O. 59.35 2.I. 23.58 2O.55. 7 3 8 FI. 1712 32 I. 5. IO 2 I. 24.2 I 2O.47.35 3 8 1725 32 I. 3. O 2 I, 24. I 2 2O.47.35 3 Obſerved by Flamſteed with the Sextant, - Jan. 26, 1682. * - Mur. Arc, Sept. 21, 28, 1691; July 9, 1703. Fl. 1725, brought up to Jan. o. 1800, is, R. A. 21° 25'44", 2. P. D. 20° 18' 56”,4. La Caille - - - - - - - - - - 21° 25' 59",5. - - 20° 18' 57”,2. Bradley - - - - - - - - - - - - 21° 26' 1",9. - - 20° 18' 55", 1. Zach - - - - - - - - - - - 21° 26' 1", 18. $ This is one of Dr. Herſchel's Double Stars, III. 6. There is another near it, V. 28. CHAP. II, I 93 The Obſervations of each s TAR claſſed together. 8. 3 C E P H E I. Date of Obſ. R. A. obſerved. Z. Diſt. obsd. Bar. Ther. Appº P.D. ded".|Mag. f h / // O / // o z z. Sept. 20. 1795 |21. 26. I | 18.15.12 29,65 64 20. 19.57 3 2 I. O,7 | 12 || >72 59 57 3 Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. War. N. P. D. An. Var. Mag. h , z. // o A A/ // Sine. Tang. Sec. 21. 26, 1,7| +o,821 20.19. O,4 || – 15,69 || 3 || 938 2,701 2,88o |- º k- W- | * F. |- Date of Obſ. R. A. obſerved. Z. Diſt, obs". Bar. Ther.|Appº P.D. dedē. Mag. h / // o / // O / // Sept. 14, 1795 || 9, 28.16 || 62.39.26 || 30,05 || 62 24. 5.47 6.7 || S. P. I7. 16,8 31 || 29,67| 58 5 I 7 || S. P. * Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. Am. Var. Mag. h * // // O / // e. S; T S - N in 8. ang. C.C. 9- 28,41,9 + 4,900 24, 6.55.1 + 15,82 7 39 13 2,234 2,447 C C 194. Particulars concerning each STAR, deduced from other Authors. [CHAP, II. ~~~ 28. U R S A. Not in Hevelius. R. A. In Time. P. D. |Mag. o z za h & // o / // . 106 Fl. 1712 I4O. 25.2O 9. 21.41 24.57.30 5 28 I 725 I 4-O. 24. O 9. 21.36 24.57. O. 5 \ l f • . Obſerved Mar. 12, 1691; but Quaere. Jan. 23, 1696. Fl. 1725, brought up to Jan. o. 1800, is, R.A. 9°30'28", 2. P. D. 25° 25'45". Mag. 5. 11. C E P H E I. R. A. In Time. P. D. |Mag.ſ O / // h / // O / // 15 Hev. 324. 9. I 2 I. 36.36 2O. 16.33 5 || Cinguli 2". 1 I Fl. 1712 3.24. I7. IO 2 I. 37. 9 20. 6.5o 5 I I I 725 324. I4, 30 2 I. 36.58 20. 6.5o 5 Obſerved by Flamſteed Sept. 21, 1691 ; July 9, 1703. Fl. 1725, brought up to Jan. o. 18oo, is, R. A. 21° 38' 38",9. P. D. 19° 36. 57". Mag, 5. * Y . $ 2. +5,711 | The obſervations of each ST A R claſſed together. I 95 * 28. U R S AE. Date of Obſ. R. A. obſerved. Z. Diff. obs'. Bar. Ther. Appº P. D. ded". Mag. * h / // o Z // - o / // Oćt, 12. 1794 || 9, 29.542 63.58.52 29,58|| 5 || || 25.25.2.1 7 || S. P. ". *- Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An var. Mag. h / // A/ 0 & // 2, Sine. Tang. Sec. 9. 30.2239 || --4,799 || 25.25.40,5 + I 5,89 7 || >993 2, I O3 2,329 T - ; -- 11. C E P H E I. Duº ºf obſ, R.A. obſerved z Dil, obº. bar. The Apº P.D.ded. Ms. - h / // . ... O * // O / // Sept. 17, 1795|21. 38.55.8 | 18.57.34 29,67| 58 | 19.37.34 5.4 , IQ. 54, 5 34. ,56| 64 34 5.4 Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. War. N. P. D. An. Var. Mag. h 2 ze - // o / // // Sine. Tang. Sec. 21. 38.55,4| +o,876 | 19.36.33, — 16,28 5.4 ,942 2,807 2,98o Date of Obſ. R. A. obſerved. Z. Diſt, obs". Bar. Ther. App. P.D. ded. Mag. -. h / // O / // O / // *Pt. 20, 1795||9. 39.39 5443.54 29,65| 64 | 16, 9.45 || 7 || S. P. 2 I • 38,7. 57 372 59 48 6 S. P. Hence the mean Poſition for Jan. o. 1860, ſeems to be, R. A. | An. Var. N. P. D. An. var. Mag. h = 2 // // - o A &/ // Sine. Tang. Sec 9. 40. 9,5 16. Io.52,9 | + 16,42 6 3,588 | •96o 3,446 | C c 2 196 Particulars concerning each S T A R, deduced from other Authors. [Char II. 16 Ceph. Hev. 13 Ceph. Fl. 1712 78 Drac. 1725 R. A. O aſ // 324.4o.55 3.24.45.3C 3.24.47. O 78. In Time. h A // 21. 38.43 2 I. 39. 2 2 I. 39. 8 D R A C O N I S. P. D. O / // I9.27. I 8 I9. 5.5o I9. 6. Io Mag. | : Cinguli 3° 4. Obſerved by Flamſteed Sept. 21, 1691, as in Cepheus ; July 9, 1703. Fl. 1725, brought up to Jan. O. 1800, is, R. A. 21° 40'38",5. P. D. 18° 36'4". Mag. 5. Not in Hevelius ; nor Flamſteed, Edit. 1712. 79 Fl. 1725 R. A. O Z // 327. 16. O Obſerved July 9, 1703. Fl. 1725, brought up to Jan In Time. h / // 2 I • 49. 4 79. D R A C O N I S. P. D. O / // I7.45.25 . o. 1800, is, R. A. 21° 50' 30",7. P. D. 17° 14' 26". Mag, 7. 19 Hev. 17 Fl. 1712 16 I 725 R. A. G f // 328.33.28 328.39. O 328.34.30 16. C E P H E I. In Time. h f z/ 2 I. 54. I4. 2 I. 54.36 2 I. 54, 18 P. D. O Z 47/ 18.26. O 18. 17.25 18. I7.25 Obſerved by Flamſteed Sept. 21, 1691 ; July 9, 1793. :- º Cinguli 4**. FI. 1725, brought up to Jan. o. 1800, is, R.A. 21° 56' 1",8. P. D. 17° 45' 8". Mag. 5.6. CHAP. II.] . The Obſervations of each S T A R claſſed together. I 97 78. D R A C O N I S. Date of Obſ. R. A. obſerved. Z. Diff. obs".| Bar. Ther. App P.D. ded. Mag. & h Z // O / // o / // Sept. 18. 1795 |21. 40.33 || 19.58.20 | 29,58 64 | 18.36.47 5 -- 2O, 33 : I9 ,65 | 64 48 6.5 ! i Hence the mean Poſition for Jan. o. 1800, ſeems to be, | R. A. An. Var. N. P. D. An. Var. Mag. h A // // O / // // Sine. Tang. Sec. 2 I. 40.32,8 +o,8o3 | 18.35.28,8 – 16,45 5 || >947 * 3, I 29 79. D R A C O N I S. Date of Obſ. R.A. obſervedl z. Diff. obs'. Bar. Ther. Appº P. D. ded". Mag h / // I o / // - O W // Oćt. 18. 1794|21. 50.19,9| 21.19.12 29,55 49 || 17.1 5.53 7 Sept. 17. 1795 22,8 26 ,67 58 4o 6.7 I8. 22. 27 258 64 39 7 2O, 22 27 265 64 39 7 - Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. Am. Var. N. P. D. An. Var. Mag. * h , Z A/ // o A // // Sine. Tang. Sec. 21, 50.21,2} +o,757 17. 14.21,6 — 16,91 7 || >955 || 3,223 3,374 16. C E P H E I. Date of Obſ. R. A. obſerved. Z. Diſt. obsd. | Bar. Ther. Appº P.D. ded".|Mag. h / // O / // O / // Sept. 18. 1795|21. 56.19 20.47.42 29,58| 64 I7.47.24 5.6 2O. I 92.5 42 ,65 64 24. 5.6 Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An. Var. Mag. h A // A/ o / // // Sine. Tang. Sec. * 56.19.4| +993" | 17:46.17.5 | – 17,22 5.6 ||,952 3,120 3,276 1 98 Particular concerning each STA R, deduced from other Authors, [Ch.A.P. II, * CAM ELO PA R D A L I H E V E L II 29. R. A. In Time. * P. D. Mag. • , a ‘, h Z // O / // ". ~~ 29 Hev. I4O. 29.34 9, 21.58 3.55. O 6 || In collo tº Auſtr. Not in Flamſteed. This of Hev. brought up to Jan. o. 1800, is, R.A. 9°53' 18". P.D. 4° 32' 55". Mag, 5. 32. U R S AE. Not in Hevelius. R. A. In Time. P. D. Mag. © z 4. h / // O / // 1 17 Fl. 17 t 2 148.47.30 9. 55. IO 23.22.30 5 32 1725 148.46. I 5 9. 55. 5 23.22.45 5 Obſerved Jan. 23, 1696. Fl. 1725, brought up to Jan. o. 18oo, is, R. A. 10° 3' 31",4. P. D. 23° 34' 1". - *sº-ºxºsº, CHAP. II.] The Obſervations of each STA R claſſed together. 1 99 —w- C AME LO PA R D A L I H E V E L II 29. S- Date of obſ. |R. A. obſerved. Z. Diſt. obs". Bar. Ther. App P.D. ded". Mag. - q h A // O / // - O / // Oćt. 6. 1795 9. 57, o,8|43. 18. 19 || 29,72 54 || 4.43 45 5 S. P. 7. 2,8 2 I ,61 | 53 47 6 S. P. 8. 3,3 - - - eme me . * * * * * = 5 S. P. 9. 3,4 - - - || - - || - - - - - || 5 || S. P. Hence the mean Poſition for Jan. O. 1800, ſeems to be, rº R. A. An. Var. | N. P. D. An. Var. Mag. h / // // o / // // Sine. Tang. Sec. 9. 58. 7,5 + I I,231 4.44. 5C, i + 17,28 5 || 3997 | I?,C4O | 12,082 gºme------ | | 32. U R S AE. Date of Obſ. R. A. obſerved Z. Diſt. obsd. Bar. Ther. Appº P.D. ded". Mag. Af h / // O / // O / // Sept. 28. 1795 Io. 2.56 || 62.26.39 29,60 | 58 || 23.52.58 5 || S. P Oćt. 6. - - - 36 >74 52 59 5 || S. P 7. 56,8 35 ,61 53 57 | 5 || S. P - ! Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An. Var. Mag h / // // o / // // Sine. Tang. Sec. Io. 3.2O, I | + 4,55o 23.54. 537 | + I 7,45 5 || ,914 || 2,256 2,468 — | -º- Date of Obſ. R. A. obſerved. Z. Diſt, obs", Bar. Ther.|Appi P.D. ded". Mag. - h A // O / // O / // 9ét. 9, 1795 22. 3.22,4| 19.57.35 | 28,83| 54 | 18.37.32 -7.8 Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. War. N. P. D. An. Var. Mag. h 2 // Z/ O / // Az Sine. Tang. Sec. 22. 3.243.3 + 1,086 I8.36. 9,6 tº gº 17,36 7.8 >948 2597 I 33 I 35 - - | 2OO Particulars concerning each STAR, deduced from other Authors, \ % *. . . . . . . . . - - ; C A M E L O P A R D A L I H E V E L II 30. R. A. In Time. P. D. Ms. O f // h Z // . O / A/ 3o Hev. I45.39.58 9. 42.49 5.45-2O 6 || Ad genam. Not in Flamſteed. * This brought up to Jan. o. 18Oo, is, R. A. 10° 4' 57”,5. P. D. 6° 24′ 56”. Mag, 6. *A 24. C E P H E I. R. A. In Time. P. D. Mag. O / // 3. h 2 2/ . O / // - 25 Hev. 331. 9. I 22, 4.36 19.16.24 5 || Cinguli 5*. 24 Fl. 1712 33O. 54. O 22. 3.36 19. Io.45 5 | * ~ * * 24. I 725 33O. 52-30 22. 3.30 19. Io.45 5.6 Obſerved by Flamſteed Sept. 21, 1691 ; July 9, 1703. Fl. 1725, brought up to Jan. o. 1800, is, R. A. 22° 5' 40".7. P. D. 18° 38' 4". Mag, $6. The obſervations of each STAR claſſed together. 2O I * Date of obſ, R.A. obſervedſ z. Diff. obº. I Bar. Ther.|App P.D.ded.|Mag| h / // Q / // - o z // º Oćt. 12, 1794 | Io. 2.29,2|43. 8.58 || 29,58|| 5 || || 4:34.24 || 7.8 || S. P. 18. 3o 9. 2 || >55 49 28 7 S. P. | Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. .] An. War. Mag. h / // // o z // : º/ Sine. | Tang. Sec. | Io. 3,447 + 11,141 || 4:35,43,o + 17.52 || 7 || >997 | 12,439| 12,479 CAM FLO P A R D A L I H E V E L II 3o. Date of Obſ. R. A. obſerved. Z. Diſt, obs". Bar. Ther.|App' P.D. ded d. Mag| h / // o / // o a z/ Oćt. 8, 1795 || Io. 4,28,3| 44.59.31 29, 1 I 53 6.25. O 6 || S. P. • I H = 27 35 28,92 53 3 6 || S. P. º Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. Am. Var. . & N. P. D. An. Var. |Mag. h / // // O A // // Sine. Tang. Sec. Io. 5.17,4 +8,763 6.25.57,8 || + 17,59 || 6 || ,994 | 8,869 || 8,925 *_ l | 24. C E P H E I. Date of Obſ. R. A. obſerved. Z. Diſt, obs". Bar. Ther.|App P.D.ded". Mag.j h / // o z z/ Q & Z/ Oćt. 6, 1795 || 22. 5:52,8 | 19,55.22 29,74 52 | 18.39.44 5 || 9. 52.24 2.5 283 || 54 42 | 5 || Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. War. N. P. D. An. War. Mag. | th A /? ... ' // * * o A // | // - Sine. Tang. See. 22. 5:54,7| + 1,189 | 18.38.39.7 | – 17,59 || 5 ||,947 2,964 3,128 l D d 202 Particulars concerning each STAR, deduced from other Authors. [CHAP. II. ---w - - *. - - r - - - - *—-3- w w x-rr-vº-r- - --------. zºw. v: ---> * ~ * : *- F-ºr------ z- 8o. D R A C O N I S. Not in Hevelius; nor in Flamſteed, Edit. 1712. R. A. In Time. P. D. Mag, iſ O / // h A // 0 / // - 8o Fl. 1725 33 I. 2. O 22. 4, 8 I9.24.50 6 *~- Obſerved July 9, 1703. This brought up to Jan. o. 1800, is, R. A. 22% 6' 21",8. P. D. 18° $2' 6". .* . U R S A. H E V E L I I 30. R. A. In Time. P. D. Mag. | O. / // h / // O A // 3o Hev. I49.42. I O 9. 58.49 22.45.42 || 5 || Ante Latus, I 19 Fl. 1712 I 50.2 I.3O 10. 1.26 22.53.5o 5 || | - *- | Obſerved by Flamſteed Jan. 23, 1696; but not in Edit. 1725. 3o Hev. brought up to Jan. o. 1800, is, R. A. 10° 9' 32°, 1. P. D. 23° 25' 3". I 19 Fl. 1712 - - - - - - - - - - , 10° 9' 40",8. - - 23° 26' 22". 35. U R S A. Not in Hevelius. R. A. In Time. T. D. |Mag| o - A // h / // O y w 121 Fl. 1712 I 5 I. 5 I .45 Io. 7.27 | 22.48.4O 6, it 35 I 725 1 5 I. 52.30 Io. 7.30 22.49. O 6 Obſerved Jan. 23, 1696. Fl. 1725, brought up to Jan. o. 1800, is, R. A. 10% I 5' 44",6. P. D. 23" 21'42". Mag, 6. Chap. II.] * The Obſervations of each STA R claſſed together. 2O3 - 8O. Il R A C O N I S. Date of Obſ. R. A. obſerved. Z. Diſt. obs". Bar. Ther. Appº P. D. ded.] Mag. h A // O / // - o / // | Oćt. 17, 1795 || 22, 6.14,7| 19.41.5o 29,54 55 18.53.17 || 6 * 19. I 457 53 23C 59 I 4. 6 Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. | N. P. D. An. War. Mag. h / // // o / // // - Sine. Tang. Sec. 22. 6, 17,2| + 1,145 | 18.51.46, 5 || – 17,62 6 * 25927 3,093 U R S AE H E V E L I I go. Date of Obſ. R.A. obſerved. Z. Diſt obs". Bar. Ther. Appº P.D. ded". Mag. h / // o / // - O / // Sept. 28. 1795 || Io. 9, 7,5 61.58. 19 29,60 | 55 23.24.36 || 5 || S. P. Oćt. 6. 8,3 I 5 374 52 34. 5 || S. P. Hence the mean Poſition for Jan. o. 1860, ſeems to be, R. A. An. Var. N. P. D. An. Var. Mag. h A // // O / // // * Sine. Tang. Sec. Io. 9.3154 +4,498 23-25.44,6 + 17,75 5 || 39 I 8 º 235 I 5 #~~~ > *-*_ _ " -- | | 35. U R S AE. Date of Obſ. R. A. obſerved. Z. Diff. obº. Bar. Ther. App P.D. deg|Mag. h / // o / // O / // - Oćt. I 2. 1794 |Io. I 5. 3,2 61.53.57 29,58 || 5 || || 23.2c. 16 7 S. P. - 18. 434 ! 52 555 49 I I 7 S. P. Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. Am. Var. N. P. D. An. Var. |Mag, h A // // O / // // Sine. Tang. Sec • Io. I 5.3 I so +4,431 23.2 1.36,2 + I 8,00 7 || 39.18 º 2,522 D d 2 294 Particulars concerning each STAR, deduced from other Authors, [Chap. II. * -º- -— r—r- zº; Exº J. Tº TTT. F. -- ~ -. -, - -——t-i------→E→E→ wa–w-H--->|-> -ſs------r z - - - - - - - r H º - x- * • *-* * * * *~ A. —-> ~r w r -wºr- x-rºr--r-r-w - - w---— ºr-trº-we-Tri-E-F--> -ºf U- Taraf ºv-º-º-º- is -: →ºz 26. C E P H E 1. Not in Hevelius. R. A. | In Time. - P. D. Mag. • , 2, 1 h a z. º o , ºr 26 F1. 1712 334.13: o 22. 16.52 26.26. o | 6 | 26 I725 334, I 3- I 5 | 22. 16.53 26.26. O 6 Obſerved Sept. 28, 1692. Fl. 1725, brought up to Jan. o. 18oo, is, R. A. 22° 28 22",3. P. D. 25° 52' 47". -**— -A wº- CHAP. II.] The obſervations of each STA R claſſed together. 2C5 Date of obſ, R.A. obſerved. z. Diff. obº. Bar. Ther. App P.D. ded Mag. h / // o A A/ O Af z. Sept. 28. 1795 |Io. 15.59 63.15.42 29,60 55 24.42. 5 || 6.7| S. P. 29. 58,7 49 ;45 || 6o 11 || 7.6 || S. P. Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An. Var. | Mag. h / // Z/ o / // // Sine. Tang. Sec. Io. 16.22,2 | +4,336 24.43.22,9 | + 18,04 7.6 || >998 || 2, 172 2,391 - 26. C E P. H. E. I. Date of Obſ, R. A. obſerved. Z. Diff. obs'. Bar. Ther. App P.D. ded".|Mag. h / // . Q & Ay’ * o / // Oét. 12. 1794 |22. 21.31,2 | 12.41. 1 || 29,58| 5 | | 25.54.13 | 6 18. - 3.134. 49.48 255 49 | 26 6 : Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. War. N. P. D. An. Var, Mag. | h / // 2, . 0 ºf Zºº // . Sine. Tang. Sec. |22. 21.39;ol + 1,995 || 25.55.58: - 18,17 | 6 ||,899 || 2,059 2,289 Date of Obſ. R. A. obſerved. Z. Diff. obs". Bar. Ther. Appº P.D.ded". Mag. h > // o / // o / // Sept. 28, 1795 |22. 21.56 25.47. 19 29,60 55 12.47.41 || 7.8 | Oćt, 2. 56 22. ,7I 62 38 7.8 | Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An. Var. Mag. h * // // e ſº ſº // Sine. Tang. Sec. 22. 21.53,2| +o,622 | 12.46.29,0 – 18,24 7.8 || 975 || 4,415 || 4,527 2O6 Particulars emerning each st A R, deduced from other Authors, [CHAP, II, 28. f I , C E. P H E F. Not in Hevelius. r t * R. A. In Time, . P. D. Mag, O / // h / // • * we 28 Fl. 1712. č I 335.45.45 22, 23. 3. I 2.47.5 O 6 28 1725 No R. A. - - - - I 2.47.5O. 6 ! | { Obſerved by Flamſteed Sept. 21, 1691. Fl. 1712, brought up to Jan. o. 1800, is, R. A. 22° 24′ 7”. P. D. 12° 14′ 12”. C E P H E I H E V E L I I 32. R. A. In Time. - P. D. Mag. o / // h f Z/ o / £2 * 32 Hev. 337, 48.42 22, 3 I. I 5 5-37. O | 6 || In fimb, tun, ſeq. Not in Flamſteed. Hev. brought up to Jan. o. 13oo, is, R. A. 22° 25' 51";8. P. D. 4° 54° 9”. Mag. 6. * CHAP. II.] The Obſervations of each STAR claſſed together. 207 --- 28. 6 1. C E P H E I. Date of Obſ. R. A. obſerved. Z. Diff. obs". Bar. Ther.|Appº P.D. ded". Mag h / // O / // O / // Sept. 28. 1795|22, 25. 7 || 26.19.52 : 29,60 55 | 12.15. 8 || 6.7 • 2. 6 - - - || - - || - - || - - - || 7.6 6. 5,8 49 274 52 9 6.7 Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. | An. War. N. P. D. An. Var, Mag h / A/ // o / // // - * Sine. Tang. Sec. 22. 25. 3, I 3. +o,573 || 12. 13.59,9 – 18,35 | 6.7 || 3977 ..º. 4,719 C E P H E I H E V E L I I 32. Date of Obſ. R. A. obſerved. Z. Diff. obs". Bar. Ther. Appt P.D. deda. Mag. h y // o / // t o / // 9°t. 9, 1795 |22, 27.38;4| 33.39.13 29,83 || 54 || 4.55.37 65 I i. * 38,5 I7 28,92 53 33 6.5 Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An. War. Mag. h / // // O / // // Sine, Tang Se: 22. 27. II,5 - 3,034 4-54-25,8 -18,46 6.5 || ,996 |º, I 1,688 *- | Aa Date of obſ, R.A. obſerved z. Dit, obº. Bar. Ther. App F.D. deal Meg. h / // O. * // Q f // Oćt. 7. 1795 |22. 27, 9,8 17.26.49 29,61 53 21. 8.20 6 8. g I O23 5O > II 53 I9 6 | Hence the mean Poſition for Jan. o. I8oo, ſeems to be, R. A. An. Var. N. P. D. An. Var. Mag. - h / // // O / // */ Sine. Tang. Sec. 22, 27.14, 5 -- I,7o 1 || 2 I. 6.52,6 — 18,43 6 || 933 2,589 2,775 208 Particulars concerning each STAR, deduced from other Authors. ſch ar. II. 29, e 2. C E P H E I. Not in Hevelius. R. A. . In Time. . . P. D. Ms. O / /? - h f // - O f // + 29 Fl. 1712. 6 2 || 336.27. o 22, 25.48 12.46. I 5 5.6 29 1725. € 336.27. o 22, 25.48 12.46.15 6 | w Obſerved with the Sextant, - Jan. 26, 1682. Mur. Arc, Sept. 21, 1691. Tºrº’s rTw *— + This brought up to Jan. o. 1800, is, R. A. 22° 27' 2", 4. P. D. 12° 12' 30". Mag. 6. 38. U R S AE. Not in Hevelius. R. A. In Time. P. D. Mag, o , z, h > * O / //" º | 127 Fl. 1712 I 55. 5. I 5 Io. 20.21 22.41. Io 5.6 38 I 725 IO. 23. II 22.40.4O 5 | 155-47,40 Obſerved Mar. 17, 1694; Jan. 23, 1696. --> Fl. 1725, brought up to Jan. o. 1800, is, R. A. 10% 3× 5%2. P. D. 23" 14’ 27”. Hence it ſhould ſeem as if Flamſteed 1712 was moſt right. U R S E H E V E L I 1 35. R. A. In Time. P. D. Mag.]] O /* // h f */ Q / // 35 Hev. I 54.23.24. IO. I 7.3.3 I 9. I4.42 5 || Supra collum. Not in Flamſteed's Catalogue ; but obſerved by him Jan. 23, 1696. No R. A. Hev. brought up to Jan. o 18oo, is, R. A. to” 28’ 14",3. P. D. 19° 57’ 3”. Mag. 5. - CHAP. II.] The Obſervations of each STA R claſſed together, 2C9. E e 29. § 2. C E P H E I. Date of Obſ. R. A. obſerved Z. Diſt. obs". Bar. Ther. App P.D. dedē. Mag, h / A/ O / // O / // Sept. 28. 1795|22. 28. I 26.21.39 29,60 | 55 | 12. 13.21 | 6.5 || Oćt. 2. O 37 ,7 I | 62 23 6.5 6. O33 4. I 274 52 17 | 5.6 Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. War. N. P. D. An. Var. Mag. h / // // o / // // Sine. Tang. Sec, 22, 27.57,6| +o,654 12.12. Io,2 | – 18,46 6.5 || ,977 || 4,624 || 4,731 38. U R S AE. Date of obſ, R.A. obſerved. z. Diff. obº. Bar. Ther. App P.D. decº Mag. h / // O / A/ O / // Oćt. 29, 1795 |Io. 27.47 : 61.47. 14 29,2O | 6o 23.13.29 5 S. P. 28. 46,6 I O 3O9 54. 27 5 | S. P. | Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An. Var. Mag. h / // // o / // // | size. Tang. Sec. Io. 28. 8,O | +4,284 || 23. I4.36,7 + 18,46 5 || 9 || 9 || 2,328 2,534 s º | --- U R S AE H E V E L I I 35. Date of Obſ. R.A. obſerved. Z. Diff. obs'. Bar. Ther. App. P.D. ded. Mag. h / O / // | o / // . Oct. 17. 1795 |Io. 28. 8,7| 58.25.53 29,54|| 55 | 19.51.57 5.6 || S. P. I 8. r 9 53 235 | 56 56 || 5 || S. P. Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. Am. Var. N. P. D. An. Var. Mag. h * // /f O / // // Sine. Tang. Sec. Iö. 28.32,5 | +4,503 || 19.53. 6,7 | + 18,48 5 || >940 | 2,765 2,940 2 I C) other Authors, [CHAP, II, Particulars concerning each STAR, deduced from 31 Hev. 31 Fl. 1712 31 1725 R. A. O / // 336.58.58 337. I - O 336.59. O -º-ºr- 31. C E P H E I. In Time. h f // 22. 27.56 22. 28, 4. 22, 27.56 Obſerved by Flamſteed Sept. 21, 1691. Fl. 1725, brought up to Jan. o. 18oo, is, R. A. P. D. Mag. O # // 18, 5.2O 5 17. 57.45 || 6 17.57.45 || 6 22° 30' 35",8. Sub Cingulo Bor. P. D. 17° 23' 50". , -: y 2- :-ºr-------, r— — —- t t * F: ~r—-a- º CHAP. II.] The Obſervations of each STAR claſſed together. .2 II Date of Obſ. R. A. obſerved. Z. Diff. obsº. Bar. Ther.|Appi P. D. ded". Mag. h / // o . A // O £ // Oćt. 12, 1794 |22. 28.19,5| 33.46. 9 29,58|| 51 4,48.40 | 6.7 18. 2O34 6 256 49 43 6 | Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. TN. P. D. An. Var. Mag. h . . // // o z // A/ Sine. Tang. Sec. 22, 27.49,9} - 3,179 4.47, 18,8 — 18,45 7.6 || 996 || 1,942 || 11,986 | Date of Obſ. R. A. obſerved. Z Diſt, obs". Bar. Ther.|App"P.D. ded".|Mag. - h / // Q / // Q / A/ Oćt. 16. 1796|22. 28.41,2 || 23.45.56 29,66 47 14.49. 6 6 I8. 4 Ix4 57 249 || 48 5 6.7 Hence the mean Poſition for Jan. o. 18Oo, ſeems to be, R. A. - An. Var. N. P. D. An. Var. Mag. h / // // o / // Z/ w Sine. Tang. Sec. 22. 28.40,6| + 1, 195 14.48. I 5.9 – 18,48 || 6.7 || ,967 3,783 | 3,913 .31. C E P H E I. Date of obſ, R.A. obſerved. z. Diff. obº. Bar. Ther. App P.D. ded Mag. h / // O / A/ o / // Oćt. 8, 1795 |22. 30.45,8 || 2 I. Io. 19 29, I I 53 17.24.47 6 I I. 45,4 2. I 28,92 53 4.5 6 || Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. War. . N. P. D. An. Var. Mag, h / // . // O / // // Sine. Tang. Sec. 22. 30.48,8} + 1,446 17:23:38, I – 18,55 6 || >954 sºlº 2 I 2 Particulars concerning each STA R, deduced from other. Authors, [CHAP. II, : - 7-Kºrs This Star was expeded in conſequence of a letter received from Dr. Herſchel, pointing out its place, as being the Double Star deſcribed by him, I. 51. .** 32. , C E P H E I. Long. Long. 18Oo. Lat. Mag. S O , // S O / // O / // - 8 Ptol. 4 o. 7.30, o | I. I.46.47 || 62.30. O | 4 || In Brad, fin. U1. Beigh O. 25. 4. O I. o. 8.35 62.30. O . 3 Tych. O. 27.53.3O | 1. O.49.28 62.35. O 4 || In fin. Hum, Pr. H. , O. 27.4. I.4O I. O. 34.3O 62.32.30 3 33 Hev. * o. 28.39.37 1. o.36. I3 62.34.30 4. || In fin. Hum. 32 Fl. 1712. o. 28.58.46 I. O-3 I. 2. 62.36.40 4 || In ſeq., brach. 32 I 725. 4 c. 28.58.30 I. c.39.46 62.36.5o 4. R. A. In Time. P. D. Mag. | O / // h / // . o 2 / 33 Hev. 339.27.4C 22. 37.5 I 25-34, 6 - : Y 32 Fl. 1712 339.38. O 22. 38.32 25.25. I 5 - 32 I 725 339.37. 3O 22. 38.39 25.25. I 5 Obſerved by Flamſteed with the Sextant, - Jan. 26, 1682. $r Mur. Arc, Sept. 21, 1691; Sept. 28, 1692. . Fl. 1725, brought up to Jan. o. 1800, is, R. A. 22°42' 20".7. P. D. 24°50'42". Bradley - - - - - - - - - - - 22°42' 35",9. - - 24° 50' 58". Zach - - - - - - - - - - - - 22°42' 35",33, - - - - - - Mag. 4. CHAP, II.] * 213 The obſervations of each S T A R claſſed together. Fraz-z-z-z-z-z-r -—r ſ)ate of Obſ. CŞt, 6. 7. 1795 ºr- º ſ R.A. obſerved z. Dit, obº. Bar. Ther.App. P.D. ded. Mag. h / // o / // o / // . . [. 22, 42. 7,8 | 16. 4.35 | 29,74 52 22.30.36 || 7.6 6,8 4.O ,61 53 3 I 6 Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. War. N. P. D. An. Var. Mag. h / // // O / // // - Sine. Tang. Sec. |22. 42. Io,6|| + 2,128 22.29.21,3 – 18,90 6 || ,924 2,416 2,614 32. , C E P H E I. Date of obſ, R.A. obſerved. Z. Dit, obº. Bar. Ther. App P.D. ded. Mag. h -- / Z/ O / // O / // Oćt. 8, 1795 |22. 42.29,3| 13.43. 1,5| 29,11 53 24.52,12 4. 9. 28,4 42.59 28,83 54 I 5 4. Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An. Var. Mag. b / // Z/ O / // // Sine. Tang. Sec. 22, 42.35×7 + 2, Io9 24.5I. 2, I – 18,92 4 || >997 * 2,379 * I 4 Particulars concerning each STAR, deduced from other Authors. [CHAP. II. *-xx-x- ** w rº- C E P H E I H E V E L II 34. R. A. In Time. P. D. Mag. O sz // h A. // i O / £2 - - 34 Hev. 34 I. 35.49 22. 46.23 8.36.45 | 6 || In fimbr. tun. praet. Not in Flamſteed. This brought up to Jan. o. 1800, is, R. A. 22° 46' 47",3. P. D. 7° 54′ 26". C E P H E I H E V E L I 1 36. R. A. In Time. P. D. Mag. § o / // H / wº 6. / // . 36 Hev. 343-3C-5 I 22, 54. 3 7.26.30 6 In fimbr. tune ſeq. r- Not in Flamſteed. This brought up to Jan. o, 18oo, is, R. A. 22° 50' 3". P. D. 6° 41' 58°. Quaere—Whether this may not be Dr. Herſchel's 1Double Star, WI. Ioo 2 Chap. II.] The obſervations of each STA R claſſed together. 2 #5 C E P H E I H E V E L II 34. Date of obſ, R.A. obſerved. Z. Diff. obs". Bar. Ther. App P.D. ded. Mag. - ,” h , / O / // - o / // Oćt, 6. 1795 |22, 47.59.8 30.39, 7 || 29,74| 52 7.55.46 5.6 7. 48. o.8 6 ,61 53 47 6 | | Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. War. | N. P. D. | An. Var. Mag. h / // // O / // z. Sine. Tang. Sec. 22, 47.55,6| +o,097 || 7.54:32,4 || – 19,07 || 5.6},990 || 7, 193| 7,263 C E P H E I H E V E L I I 36. Date of obſ, R.A. obſerved. z. Diff obº. Bar. Ther. App P.D. ded. Mig. h z z. O / // • I. a , , j. Oét. 6, 1795 |22. 55.38 31.5o. 1 29,74| 52 6.44.51 | 6.5 t 7. 37,8 I ,61 53 | 5 I 6. Q Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An. War. Mag. - fi A // // o z z. T * // Sine. Twº | Sec 22. 55.27,o -o,078 6.43.35,2 – 19,26 5.6 >993 || 8,48o 8,539 Date of Obſ. R. A. obſerved. Z. Diſt. obsd. Bar. Ther. Appº P.D. dedē. Mag. h A /? O / // O f // Oćt. II. 1795 |22. 55.5o,4 || 14.41.57 28,92 || 53 23.53. 16 7.6 16. 5O 59 29,38 || 56 I 3 || 7.6 Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. Am. Var. N. P. D. An. Var. Mag. B / // // o A // // Sine, Targ. Sec, 22, 55.577 +2,232 || 23.52. o.3 | – 19,27 | 7.6|,914 2,266 2,471 216 Particulars concerning each ST A R, deduced from ºther Authors. [CHAP, II. *. sºmsº - *. •º- ºr •ºr * zºº ºt-, *s º Tº 5. Tº º Tºs *:: C.T. Tº Tºº 2: is AE- is a wº ºx--º- ++, +-w a. ºrº -- gº ºf * *- *. * -—F- 33. ºr C E P H E I. R. A. In Time. P. D. Mag. O / // h / // O / // 37 Hev. ºr 344. IO. 9 22. 56.41 16.26. O 6 || Sub cingulo Auſtr. 33 Fl. 1712. Tr 344-32. O 22. 58. 8 || | 16. 17.15 5 || In crure ſeq. 33 1725. 7 344-27. O 22. 57.48 16. 17.15 5 Obſerved by Flamſteed with the Sextant, - Jan. 26, 1682. Mur. Arc, Sept. 21, 1691. Fl. 1725, brought up to Jan. o. 1800, is, R. A. 23° 1' 11",7. P. D. I 5° 41' = ~~< $º mºnºssºs *- 46”. —a. CHAP. II.] The Obſervations of each S T A R claſſed together. 217 Date of Obſ. R. A. obſerved. Z. Diff. obs". Bar. Ther.|App. P.D. ded. Mag. h / // O / // O / // Oćt. 8, 1795 || - - - || 59. I 1.24 29, 11 || 53 20.37.31 7 S. P. I I. Io, 58.53 2} | 28,92 || 53 27 7 S. P. 16. 53 26 29,38 || 56 33 7.8 || S. P. | * } Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. War. M. P. D. An. Var. Mag h / // // o / // // Sine. Tang. Sec. Io. 59.14,6} +3,979 | 20.38.51,8 + 19,35 | 7 || 936 2,654 2,834 33. 7 C E P H E I. Date of Obſ. R. A. obſerved. Z. Diff. obs". Bar. Ther. App. P.D. dega. Mag. h y’ // O / // O / // Ośt. 17, 1795 23, 1.29,2 22.52.17 29,54 55 15.42.46 5 I 8. 29, 2 I 9 235 | 56 44. 5 | Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An. Var. Mag. • h / // // o / // // Sine. Tang. Sec. 23. I.33,4 | + 1,866 I 5.4 I.33,O - I 9,4O 5 || ,963 3,559 3,697 t —ºn Date of obſ, R.A. obſerved. Z. Diff, obº. Bar. Ther. App P.D. dejº Mag. h * // O * // Q / // Oćt. 8, 1795 || 23. 7.5.1,8 | 18.2.1.45 29, I I 53 20, 13.24. 6 9. 5 i 34 44 28,83 || 54 25 6 | Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. Am. Var. Mag. h 6 // // O / // // Sine. Tang. Sec. 23. 7.58, I + 2,251 2O. I 2. 734 - I 9,53 6 º 237 I 7 || 2, 96 F f 2 I 8 [Char, II, Particulars concerning each STAR, deduced from other Authors, 38 Hev. 34 Fl. 1712. 34. IZ25. O O O i —r- R. A. O / // 346.21.21 346.29. O 34.6.28.40 d —x- 34. o C E P H E I. In Time. h / // 23. 5.25 23. 5.56 23. 5. 55 Obſerved by Flamſteed Sept. 21, 1691. 23-43.25 24, 34, 2C 23-34-40 ; ~ In finiſt, cub. In ſeq. Brach, ſeq. zºg-ºp Fl. 1725, brought up to Jan. o. 1800, is, R. A. 23° 10'14",3. P. D. 22° 58' 52". Mag. 5. ** char. II.] - The obſervation, of each STAR claſſed together. 219 a-z-z-z--~~~~. -v- ºr - :ºr - ºr - ** j ------ Date of Obſ. R. A. obſerved. Z. Diſt. obs". Bar. Ther. Appº P.D. ded" | Mag. h / // O / // O / // Oćt. I I. 1795 |23. Io. 14,4 22.46. I I 28,92 || 53 15.48.53 7.8 16. * I 3 16: 29,38 || 56 | 48 : 7.8 Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An. War. Mag. h / // A/ o / // // Sine. Tang. Sec. 23. Io. I 8,8 || + 2,049 | I 5.47.35,3 — 19,57 7.8 || , 962 3,535 |sº. Date of Obſ, R. A. obſerved. Z. Diſt. obs". Bar. Ther. Appº P.D. ded". Mag: h / // O * // O / // } Oćt. 26. 1795 || I. Io.31,3| 63. 7. 8 29,52 || 5 || || 24.33.35 6 S. P. Nov. 3. 32 I | 372 || 4-2 29 6 || S. P. Hence the mean Poſition for Jan. o. 18Oo, ſeems to be, R. A. | An. Var. N. P. D. An. Var. Mag. h / // // O / // // Sine. Tang. Sec II. Io.5o,9| + 3,689 24.34.44,8 + 19,59 6 || ,909 | 2, 186 2,404 sºlº l * 34. o C E P H E I. Date of Obſ. R. A. obſerved. Z. Diſt. obs". Bar. Ther. Appº P.D.ded". Mag, h / // o / zz © / // Oćt. 17, 1795 |23. Io.19,7| 15.35. 2 29,54|| 55 23. o. 9 5 18. I 922 6 235 | 56 5 5.6 | Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An. Var. Mag, h A // // o / // .// Sine Tang S - & … [? 9 ČC. 23. Io.27.3 +2,395 || 22.58.52,9 || – I 9,58 5 || 392. I as sº 2 F f 2 22O Particulars concerning each STAR, deduced from other Authors, [CHAP, II, I. A D R A C O N I S. Long. Long. 1800. Lat. Mao: S o / // S o / // O / // | 3 I Ptol. A 3. I 3. IO. O 4. 7.26.47 * 56. I 5. O 3 || In extrem. Caudae. U1. Beigh 4. 2.25. O 4. 7.29.35 57. 9. O 31 Tych. A. 4. 4.37-30 || 4. 7.24.28 57. 7. O 3 || Ultima Caudae. Pr. H. A 4. 4-29.30 || 4 - 7. 22.2O 57. II.5o 3 3 Hey. A 4. 5.29.59 4. 7.26.35 57. IO.47 3 gº.cº. I Fl. 1712. A 4, 5.59. 5 - 4 - 7.3.I.2 I 57. I 3.24. 4 || Ult. Caud. I I 725. A 4, 5,58.30 || 4. 7-3o.46 57. I 3. 3 3.4 || In extrem, Caudae. R. A. In Time. P. D. Mag O / // h / // O / // 3 Hev. 167.32.51 | 11. Io. 1 I 8.48. I 2 I Fl. 1712 168. 9. O II. 12.36 18.58. O I I 725 168. 7.40 II. I 2.3.I 18.58. O Obſerved by Flamſteed with the Sextant, - Dec. 27, 1681. Mur. Arc, Mar. I 3, 27, 1694. Fl. 1725, brought up to Jan. o. 18oo, is, R. A. 11° 19 28”,6. P. D. 19° 34' 4". Mag. 3.4. i CHAP. II.] The obſervations of each STAR claſſed together. 22. I Date of Obſ. R. A. obſerved. Z. Diff. obs". Bar. Ther. App. P.D. ded". Mag h / // O / // O / // Oćl. 18. 1796 || I. 16.41,4|46. 19.5o 29,40 || 48 || 7.45.23 6.7 || S. P. 23. 41,8 *32. ,67 || 5 | 25 6.7 || S. P. Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An. Var. Mag b / // // O / // // Sine. Tang. Sec. II. I 7. 5,7| +4,907 7.46.21,4 || -- 19,69 6.7 || >991 7,326 7,394 I. A D R A C O N I S. Date of Obſ. R. A. obſerved. Z. Diff obs'. Bar. Ther.|App. P.D. ded. Mag h A // O / // O / // Oćt. 1 r. 1795 || I. 19. o.9 58, 6.36 28,92 || 53 | 19.32.38 || 3.4 || S. P. 16. * I 35 38 29,38 56 4O 4. S. P. 17. I 37 4. I 254 55 43 4 || S. P. \ ! | Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. Am. Var. N. P. D. An. Var. Mag. h / // // O / // // Sine. º'ang Sec. II. 19:22,2 -H 3,738 || 19.34, 3,7 | + 19,72 || 3.4 || ,942 2,813 2,986 222 Particulars concerning each STA R, deduced from other Authors, ICHAP, Ir, \ zºº 2. D R A C O N I S. * Not in Hevelius. R. A. In Time. P. D. |Mag. O f // h A y/ o f ºf 2 Fl. 1712 169.22.30 II. I 7.30 18.57.ſo 6 2 1725 169.20.30 II. I7.22 18.57.4 o 6 Obſerved Mar. 17, Ap. 12, 1694. Fl. 1725, brought up to Jan. o. 1800, is, R.A. 11° 24′ 11”,3. P. D. 19° 33'53". Mag. 6. CHAP, II.] The Obſervations of each S T A R claſſed together. 223 . 2. D R A C O N I S. Date of Obſ. R. A. obſerved. Z. Diſt. obs". Bar. Ther. Appº P.D. ded: Meg. | h / // O / // - / // Oćt. 16. 1795 || I. 23.49 || 58, 6.36 29,38 56 | 19.32.38 6 I7. 49,7. 37 254 || 55 39 6.5 | Hence the mean Poſition for Jan. o. 18oo, ſeems to be, R. A. ! An. Var. N. P. D. An. Var. Mag. h / // // o / // . // Sine. Tang. Sec. II. 24. 9,7| +3,656 | 19.34, o,4 | + 19,8o 6.5 , ,942 2,813 2,986 ; ** | -º- Date of Obſ. R. A. obſerved Z. Diſt, obs". Bar. Ther. Appi P. D. ded". Mag. h / > // O / / / o / " // Nov. 9. 1794 |23. 23.55,2 33.52.24 29.70 || 43 || 4:42.24 6 - I 2. 56. 27 ,6o 45 22 7 Nov. 3, 1795 54 42' 372 42 6 7 Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An. Var. Mig. h / // /* o / // // Sine. Tang. I Sec. 23. 2346,5 | +o,500 || 4.40.26,8 || – 19,8o 6.7 || 997 sº I 2,267 Date of Obſ. R. A. obſerved. Z. Diff. obs'. Bar. Ther. App P.D d-dº. Mag. h / // O / // 0. / // Oćt. 26. 1795 |23. 25.33,3| 20.22.35 | 29,52 || 5 || | 18.12.31 8 Nov. 7. 32 29 >So 49 37 8 Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. War. N. P. D. An. Var. Mag h / // // O A // // S$ne. Tang YeC. 23. 25.40,6} + 2,469 | 18. I 1.23, I — 19,82 8 || >95o 3,944 3,294 224. Particular concerning each STAR, deduced from ºther Author, [CHAP, II, 48 -- tº - T - T T r—I K Tº - =– T F X----r † zºsº w-r- -w-ºr- ~zz Fr--- g * > --E-F-º- C E P H E I H E V E L I I 39. R. A. In Time. P. D. S. Mag. O f // h / // o / Wy” * 39 Hev. 350,41.36 23. 32.46 4.33. O 6 || In fimb, tun, media. Not in Flamſteed. This brought up to Jan. o. 1800, is, R. A. 23° 23' 16",7. P. D. 3° 47' 19°. CHAP. II.] 225. The Obſervations of each STA R claſſed together. wr-war-rºr--—zºr-rºxrrºw —rr- —i. Date of obſ, R. A. obſerved. Z. Diff. obs". Bar. Ther.|App P.D. ded". Mag. * h A // o / // * o / // Oćt. 18. 1796 || 1. 24.27,4|49.51.19 || 29,40 || 48 II. 16.59 7 || S. P. 23. 27,8 2. I ,67| 5 I 17. I 7 || S. P. Hence the mean Poſition for Jan. o. 1800, ſeems to be, || R. A. Am. Var. N. P. D. An. Var. | Mag. h / // // O / // & // Sine. Tang. Sec. II. 24.45,9| +4,114 | II. I7.58,9 || + 1 9,80 7 || 398 I 5,004 || 5, IOS C E P H E I H E V E L I I 39. Date of Obſ. R. A. obſerved. Z. Diſt, obs”. Bar. Ther. Appº P. D.ded. ag. h / // Q} / // O £ // Oćt. 25. 1795|23. 27.48,6| 34.45-52 29,53| 53 || 3.48.56 || 6 26. sº sº ſºme 53 352 || 5 I 55 || 6 Nov. 3. 47 54. 372 || 4-2 53 6 | | Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. Var. N. P. D. An. Var. Mag. h A // // O A //f A/ Sine. Tang. Sec. 23. 27.32,7| +o,234 3.47-49,3 – I 9,84 6 || 3998 º *—- l | —-º Date of Obſ. R A. obſerved. Z. Diff. obs". Bar. Ther. Appº P.D. ded". Mag. * h / // O / // O / // Nov. 9. 179423. 30.33,7| 21.27.27 | 29,70 43 17. 7.37 6 I 2. 34. 23 ,6o 45 4. I 6. Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. Anvar. N. P. D. An. Var. Mag. | h /* // */ > O A // // Sine. Tang. Sec. 23. 30.44, 1 || --2,509 || 17. 6.19,5 | – 19,38 || 6 || ,956 || 3,249 3,399 G. g 2 2. 6 Particulars concerning each S T A R, deduced from other Authors. . [CHAP. II. ww. 35. y C E ‘P H E I. Long. Long, 1800. Lat. Mag | S o / // | SS o z º. o / // . 2 Ptol. y I. 3. o. o I. 27. 16.47 64. 15. O 4 || In pede finiſtro. U1. Beigh . I. 22.3.I. O I. 27.35.35 64.30. O I I Tych. y I. 24.23. O | I. 27. 9.58 64.28. O 3 || in finia, pede. Pr. H. I. 24.24. O | I. 27. I 6.56 64.34. I2 3 4.o Hev. y 1. 25.24.49 I. 27.2 I.25 64.36.25 3 || In crure fin. 35 F). 17 12 y I. 25.48. I 5 I. 27.20.3 I 64.36, 47 3 || In pede ſeq. 35 1725. Y I. 25.48.35 | I. 27.20.5 I 64.36.3o 3 || In crure ſin. R. A. In Time. P. D. |Mag, * ~ O / // h / // o f A/ 4o Hev. 35 I. 29. 3 23. 25.56 J4. I4. 57 * 35 Fl. 1712 35 I.47.3O 23. 27. IO I 4, 5-25 | 35 1725 35 I-49. O 23, 27. 16 14, 5.25 Obſerved by Flamſteed with the Sextant, - Jan. 26, 1682. Mur. Arc, Sept. 21, 1691. Oćt. I 1, 1693; called 6 Caſſiopeas. Fl. 1725, brought up to Jan. o. 1800, is, R. A. 23° 31' 35", 1. P. D. 13° 29' 0". Mag. 3. La Caille - - - - - - - - - - 23° 31' 14",9. - - 13° 29' 15". - - 3.4. *— 3. D R A C O N I S. Not in Hevelius; nor in Flamſteed, Edit. 1712. R. A. In Time. P. D. Mag. O / // h A // O / // 3 Fl. 1725 I7 I. 8.3O II • 24, 34. 2 I.33. IO 6 Obſerved Ap. 12, 1694. This brought up to Jan. o. 18Oo, is, R. A. I.1° 31' 3". P. D. 22° 9' 33”. CHAP. II.] ‘The obſervations of each S T A R claſſed together. 227 35. y C E P H E I. Date of obſ, R.A. obſerved. z. Diff. obs'. Bar. Ther. App P.D.ded"|Mag h / // O / // O / // Oćt. 18. 1795 |23. 31. 8,7| 25. 4.46 29,35 | 56 | 13.30. I 5 4 | 25. 7,6 53 2.53 53 8 || 4 Nov. 3. 8 47 372 || 4-2 I 3 4. | º y Hence the mean Poſition for Jan. o. 18oo, ſeems to be, R. A. | An, War. N. P. D. An. Var. |Mag. h / // // } O / // // Sine. Tang. Sec. |23. 31.14.2 | --2,351 13.29. O,4 | – 19,89 4 || * 4, 17 I 4,289 f 3. D R A C O N I S. Date of Obſ. R. A. obſerved. Z. Diff, obs'. Bar. Ther. App P.D. ded ſmag. h / // O / // O / // Oćt. 16. 1795 || 1. 30.51 : 60.41.25 29,38 56 22. 7.36 || 6.7 || S. P. I7. 5 I:27 25 354 55 36 || 6 || S. P. Hence the mean Poſition for Jan. o. 18oo, ſeems to be, R. A. An. Var. N. P. D. - Am. Var. Mag. k º h / // // | O / // // Sine. Tang. Sec. |11. 31. Io,9} +3,476 22, 8.59,5 + 19,89 6 || >926 2,456 || 2,652 # Sw # 228 Particular concerning each STAR, deduced from ºther Authorſ, {Chap. II, ~~~~~ Y Jº * # } * ** # * | D R A C C N IS H E V E L II 41. R. A. In Time. P. D. Mag, & * o / // h / // O / // - 41 Hev. 352.55.22 23. 5. I.4. I 24, 4.2O 5 || In fin. Brach. ad ſceptrum. Not in Flamſteed. g This brought up to Jan. o. 1800, is, R.A. 23° 37' 52",3. P. D. 23° 18′ 11”. *-* <-- -º-wrº-º-º: - *-* *~~~~~~3. * * ---. CHAP. II.] . The Obſervations of each STAR claſſed together. 229 . Tate of Obſ. R. A. obſerved. Z, Diſt. obsé. Bar. Ther. App P.D. ded.' Mag. p * h / // o / // - o / // : Oćt. 16. 1795 |23. 37. O | 1.4.14.16 29,38 56 24.20.57 || 7 17. | 36.59,7 I4. 254 57 59 7 - | Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. War. N. P. D. An. War. Mag. h /* // • 6/ O / // . // Sine. Tang. Śec. 23. 37. 9,5 + 2,772 24. I 9.4O, 3 } - I 9,95 7 || 39 II 2,2 II | 2,427 \ | Date of Obſ. Oćt. 26. 1795 Nov. 3. D R A C O N IS H E V E L II 41. R. A. obſerved h * // 23. 38. 16 16 Z. Diff. obs". O / I 5. I 5.4 I 37 // Bar. Ther. 29,5 2 5 I >72 42 Appº P.D. ded". O Z // 23. I 9.3 I 34. Hence the mean Poſition for Jan. o. 1800, ſeems to be, | Mag. R. A. An. Var. N. P. D. An. Var. Mag. h / // // - O / // // * Sine. Tang. | Sec. 23. 38.25,6 + 2,783 || 23.18.20,8 || – 19,96 5 || 39.18 2,32 2,527 l Date of Obſ. |R. A. obſerved. Z. Diſt. obs”. Bar. Ther. App P.D.ded". Mag." h z // . O / // O / // # * * i Oćt. 25. 1795 || 1.42.21,6: 53.40.29 29,53 53 15. 6.19 7 26. 2333 3O 252 5 I 20 || 7 | Hence the mean Poſition for Jan. o. 1800, ſeems to be, | R. A. An. Var. N. P. D. An. Var. Mag. h f // ,”/ O / // // Sine. Tang. Sec. II. 42.42,7| + 3,442 15. 7.39,5 + 19.99 || 7 || ,965 3,703 || 3,856 * 230 Particulars concerning each S T A R, deduced from other Authors. [chap. II. ** – ..º. wr---- —c * & --→w- r—re-cºur-w avºr --> † xy- wr- w y--wººg +a++-s—-w p: -j-žavry-Fºx CHAP. II.] The obſervations of each STA R claſſed together. 231 º sº-ºr--r- -z- * , †: agºs- Date of Obſ. R. A. obſerved. Z. Diſt, obs'. Bar. Ther. Appº P.D. ded". Mag .* * ! h / // • * Z. o A // Nov. 9, 1794 || 1. 53.36,2 41,51.29 29.70 || 43 3.16.54 6 || S. P. I 2. 35 3O ,6o 45 55 || 7 || S. P. & Hence the mean Poſition for Jan. c. 1800, ſeems to be, R. A. An. War. N. P. D. An. Var. Mag. - h , , ; // o z // g - // Sine. Tang. Sec. 11. 54.17,7| +3,656 3.18.27,3 +20,04 || 6.7 || ,998 |17,295 || 17,324 | l | | Date of Obſ. R. A. obſerved. z. Diff. obs". Bar. Ther. App P. D. dedd, Mag, h / // O a // O # // Oćt. 25. 1795 |23. 58.25,6 27. 9.55 29,53 53 II.25. 3 6 || 26. 25,3 52 352 5 I 6 6 * | Hence the mean Poſition for Jan. o. 1800, ſeems to be, R. A. An. War. N. P. D. An. War. Mag h / // // O / // // Sine. Tang. Sec. 23. 58.33, I | + 3,028 II. 23.47,2 - 20,05 6 || ,98o 4,961 5,061 agº" | * C H A P T E R III, A CAT A L O.G. UE OF SU C H CIR C U M P O L A R S T A R S A S HAV E B E E N OBSERVE D ; B R O U G HT UP TO THE BEGINNING OF JAN. I, I 8 o'o - AND CLASSED IN SMALL z O N E S. HIS Catalogue needs no explanation. The three firſt Zones contain juſt the ſame number of degrees, as the three firſt in the General Cata- logue, publiſhed by the Author. The two laſt, contain three degrees each. The Stars are all brought up to their mean poſitions for the beginning of Jan. 1, at o' o' o”, or Jan. o. 1800 : and to each is added the Natural Sine, Tangent, and Secant of its Declination; for more readily calculating the effects of Aberra- tion, Nutation, &c. by the General Tables, which will be found at the end of the volume. H h 234. A Catalogue of Circumpolar Stars, jam. o. 1800, [CHAP. III. CIR C U M P O L A R S T A R S, JAN. o. 1800. zo N E To 9° of No RTH Po LA R D IS TAN ce I N c L U S I v E. R.A. in Time. An. Præc. N. P. Diſt. An. Præc.|Mag, Sine. Tangent. Secant. || Name or Deſcription. =-- —H sº * h / // A/ O / // // o. 36. 6,3| 8,886] 2, 3.25,4 || 19,80. 8.7 ,999 || 27,837| 27,855 || Comes Polaris. 43.36,7| 6,066| 4,49.15, I 19,69 || 5 || 996 || II,857. I 1,879 || Cephei Hev. 43. 45.57,5 6,941 || 3:55.42.4 1965 6.7 998 || 14,561|14,596 º 52.27,3| 12,957| 1.45.36,7 | 19,52 | 2 | >999 || 32,593. 32,599| Polaris. tº º 56.18, I | Io,494; 2,29.25,8 19,45 9. Io sg99 |22,993 23,015 || 2 Urſae Minoris. . 2, 47.31,3| 1,803| 5.5o. 13,4 || 14,93 || 6 || >995 || 9,782; 9,833 -sº 3. 3. I2,9 16,683. 4. I.33,4 I3,98 6 || >997 || 14,212 14,247 & 37.2O,8 || 9,3O2; 9.52.59,4 II,7o | 5 || 3985 3749) 5,826|| Cephei Hev. 49. . 37.43,6|I 5,2 I 5. o. 16,4 I I,2i | 7 | ,996 || II,382} 11,416 - 43.33,2 | 12,445, 6.43.37,2 I I,25 | 6 || >993 || 8,478| 8,536 47.22,0|| 1 1,940 7. II. I.3,6 Io,98 || 6.7 | >992 || 7,929| 7,995 -- 53, o,7| 9,725, 9:41.28.0 | 19,54 || 6 || >986 5,855 5,949|| 4, 23.34,8| Io,611 9. Io.52,5 8,23 5.6 ,987 6,185; 6,265|| Perhaps Ceph. Hev. 50. 5. 47. 1,6|84,949 o'56, 4,9 º 7 |,9999 ||61,38o 61,399 6. 2.5o,7|31,124, 2.43.32.6 , o,24 || 5 | ,999 || 21,000] 21,040|Cephei Hev. 51. 48.12,5 13,341| 7.15.16,2 || 4, 18 5.6 992 || 7,856; 7,918|| Camelop. Hev. 25. 57.34,3| II,437| 8.44.24.4 4,84 || 7 || >988 6,501 || 6,578|| * - . . . . | 7. 19.42,7| 1 1,809 8.16.54,5 | 6,58 || 7.8 ,990 6,954. 7,025 22.33,3| Io,733; 9.16. I 1,9 7,06 6.7 ,987 6, 127; 6,299 26.21,0| Io,364. 9.39.20, 1 || 7,38 7.8 ,986 5,879; 5,963 || Camelop. Hev. 28. 44.30,7 | 12,852| 6.59.25,4 || 8,81 | 6 || >992 | 8, 153| 8,214 ; 8. 3o. 57,5 | 15,016 || 5. 3. 18,4 12,28 7.6 996 || II,307| II,351 9. 7.21,4| 9,728, 7.48.55, I 14,62 || 4 || ,991 || 7,287| 7,355||Draconis Hev. 1. 58. 7,5 | I 1,231|| 4.44.5o, I 17,28 || 5 || >997 | 12,040 12,082 || Camelop. Hev. 29. ſo. 3.44,7 | I I, 14 I | 4:35.43,O I 7252 | 7 || >997 I 2,439. I 2,479 | 5.17,4| 8,763 6.25.57,8 17,59 || 6 || 994 | 8,869| 8,925 || Camelop. Hev. 30. 11. 17. 5,7| 4,907 7.46.21,4 19,69 6.7 | >991 || 7,326|| 7,394 54.17,7| 3,656| 3.18.27,3 | 20,04 || 6.7 | >998 || 17,295 I 72324 | - * i 12. 15. 6,o o,867. I. II.35, 5 20,01 || 7 |,9998 || 48,000; 48,910 i. Caar. III.] 2.35 A Catalogue of Circumpolar Stars, jam, o. 1800. *— ~ zo N E ro 9° of No R T H P o LA R D 1st A N c E IN cl U S I v E—continued. –1– ~~i=- -— fºx--> -->: ----------->|-> → ºradº. " | R.A. in Time. An Prec. N. P. Diſt. An. Praec. |Mag. Sine. Tangent. Secant. Name or Deſcription. h / // // O / / / AA 12. 47,45,2 o, 190 5.29.50,4 | 19,62 || 7 || >995 || Io,390. Io,438 || Camel. Hev. 32. I. 47.5457 - - 3o. 9,9 - - || 6 || - - - - - - || - - - - - 2. 14. 39.36,3| 2,074. 9.28.58.3 || 15,36|| 7 | .986 5,986| 6,069 |16. 1.22,7|11,48o 4:32.5o,5 | 10,02 || 7 ||,997 | 12,574 12,614 14.45,9| 8,666 5.49.45, I | 9,10 || 7.8 995 || 9,795, 9,846 17. 6.56,6| 6,606| 7.39.24,2 4,51 || 4 || >991 7,438|| 7,502 || 22. e Urſae Minoris. 18. 36.34, I | 18,844 3.26.14,O || 3, 19 || 4.3 ,998 || 16,648|16,670 || 23. 3. 44.13,5 21,335| 3. 4. Io,3 || 3,83 || 6.7 || >998 || 18,637|18,665 || 24. 20. 38.48,7| 3,251 9.14.57.9 | 12,83 || 7 | .987 6,141, 6,222 4o. 3,3| 3,202 9.16.30,9 | 12,90 5.6 ,987 | 6,123 6,204 || 75 Draconis. 4o.2439 2,963| 9.37.14, I | 12,91 6.7 >986 5,901 5,985 || 74. 47.55,4| 4,819. 7. 5.29,4 13,67 || 6 ,992 || 8,038 8, IOO © 51.26,4| 39,761 | 1.18.29.6 || 13,68 || 5 |,9999 || 43,748|43,769|| Cephei Hev. 24. 56.40,3| 3,565; 8.13.20.9 || 13,94 | 5.6 || >989 | 6,920, 6,992 || 76 Draconis. 22. 27.1 1,5| 3,034 4.54.25.8 18,46 6.5 996 || 1 1,645| 1 1,688 || Cephei Hev. 32. 27.49,0|- 3, 179| 4.47.18,8 18,46 || 6 || >996 || II,942| II,986 º 47-55,6]+o,097 7.54.32,4 | 19,07 || 5.6 ,990 || 7, 193| 7,263 || Cephei Hev. 34. 55,27,ol-oo78; 6.43.35,2 | 19, 26 5.6 ,993 8,48o 8,539|| - - - - 36. |23. 23.46,5|+o,5ool 4.40.26.8 19,8o 6.7 ,997 | 12,226 12,267 27:32,7|+o,234 3.47.40,3 19,84 || 6 || ,998 || 15,077. I 5,111 || Cephei Hev. 39. —a -*—--- —a ** *- : *-*****. *~ xº~~, a ---ex-xx- - - - w 236 [CHAP. III. A Catalogue of Circumpolar Stars, jan. ©. 1800. z O N E F R O M I o° To I4° N. P. D. Is T A N ce I N cl U S I v. E. — — R.A. in Time. An, Praec. N. P. Diſt. An. Præc. Mag. Sine. Tangent. Secant. || Name or Deſcription, - + . tº h A // // O / // // * | o. 14.31, 3,507 || 1 I. 3.24.9 20,01 || 7 || 981 5,117 | 5,213 18,20,8 || 3,490 14: 5. 1,5 : 19,97 || 6-7 || 970 || 3,986 || 4, Io9 44,242 4,438 IO-32.29,0 | 19,68 7.8 ,983 || 5,374, 5,466 \ * 55.31,2 4,628 I 1.24.43,9 | 19,47 6.7 ,98o 4,951 5,052 || Cephei Hev. 44. 59-23,O 4,796 II. 9.27.5 || 19,38 7 981 5,069 5, 167 I , 4. 534. 4,593 I 3-29.35, I - I 9,28 7 - >972 4,164 4,282 - 6.39,9 || 4,794 | 12.20.39.4 | 19,21 || 7 | ,977 || 4,569 || 4,677 45.34.9 5,506 || 13.41.28,O | 17,95 || 6 || 971 || 4,105 || 4,225 || 47 Caſſiopea. 46.52,8 5,319|| 14-51.22.9 17,95 6 ,967 3,771 3,901 || 49. 2. 4o. 10,5 7,329 || 1 1.23.40,8 15,36 || 6 || 98o 4,960 5,060 || Cephei Hev. 47. 54.28,8 7,057 I 3. I. 18,8 || 14,48 || 6 || >974 || 4,325 || 4,439 || - - - - 48. 3. 45. 5,7 || 9,355 Io. 1. 4.7 | 1 1, 16 || 7 || >984 5,661 | 5,749 55.27,o 7,522 14.24,56,8 Io,37 || 7 || 3969 3,899 || 4,016 4. 12.56,5 9,339 Io.46. 18,4 9, Io 7 ,982 5,257 5235 I - 49.56,7 || 9,607 || 1 1. 2.18,2 6,03 || 5 | ,981 5,128 5,225 || Camelop. Hev. 19. 58,46,9 || 9,001 | 12, 14.37,8 5,36 7.6 ,977 || 4,698 || 4,722 p + - 6. 5,46,5 lio,416 Io. 17.30,9 o,4o || 7 || >984 5,506 || 5,597 - - 11.53,4 |io,431 Io. 15.34,2 o,54 || 6 || 984 || 5,525 | 5,614 || Camelop. Hev. 23. 30.36,7 8,898 || 1 2.48. I I, 2 2,62 5.4 || >975 || 4,398 || 4, 5 IO || - - * - 24. 55.28,2 8,063 || 14.34,46,5 4,8o || 7 || >968 3,848 3,974 7. 1.29.7 || 9,739 Io.56. Io,2 5,30 7.8 || >982 5, 175 || 5,270 *: 32.42,5 |10,057 | Io. o.3o,o 7,87 || 5 || >985 5,666 5,754 57.44,5 7,537 || 14.35. 1,1 9,85 || 6 || 968 3,843| 3,972 8. 13. 8,5 7,354 14.37, 8,9 || 1 1,00 6.7 || >967 3,834|| 3,962 II. 24.45,9 || 4,114 | I I. 17. 58.9 | 19,8o || 7 || >981 5,Co4 5,103 || - - 12. 2.46,5 3,008 || 1 I. 16.44,4 20,04 || 6.7 398 I 5,915 5, 107 $3. Hev. 4. vel 36, I | - - 23, 1 || - - - - - - - - || - - || Camel. Hev. 31. 9.43,4 3,261 | 13 43.42,O 20,93 5.6 >971 4,092 || 4,213 Draconis Hev. 5. 14. 5.28,6|o,397 || 14.27.38,7 17, 19 || 7 | 968 3,878||4,005 || 3 Urſae Minoris. 9.51,O o,465 11.31, 4,7 | 16,93 || 5 || >98o 4,907 5,008 || 4 b Urſae Minoris. 28. 7,4 o,316 13.24.51,5 | 16,01 || 4 || >973 || 4, 193| 4,310 || 5 a Urſae Minoris. 15. 37.39,4 1,978 || 1 1.59.29,6 || 1 1,64 4.5 || 3978 || 4,708 || 4,812 || 153. 51.28,8 2,444 || 1 1.35.48,2 10,66 || 4 || >979 || 4,872 4,973 16 . --- | ~~. CHAP. III.] A Catalogue of Circumpolar Stars, jam. c. 1800. 237 zo N E F Ro M Io" To 14° N. P. D Is T A N C E IN CL Us I v E—continued. R.A. in Time. An Præc. N. P. Diſt. An Præc. Mag. Sine. Tangent. Secant. || Name or Deſcription. * *A*- –H h / // // O / // // 15. 59.56, 1 | 1,621 | 13.51.24.0 10,02 7. 397 I 4,054 4,175 || 17 Urſae Minoris. 16. 19.33,8| 2,202 | 12.40.49.0 | 9,1 1 || 6.7 ,976 4,448 4,559 N - 16.46,o 1,962 || 13.37.30,2 8,79 || 6 || ,972 4,128 4,247 || 19 Urſae Minoris. 17.43,7| 1,668 14.17.49,4 8,63 | 6.7 ,969 3,927 | 4,052 || 20. 23.30.6 I,881 13.47.22,4| 8, 17 4.5 || >971 4,074 4, 195 || 2 | ". 17. 58. H - - || 13. I.15.3 o,23 || 6 || 974 4,331 4,448 || 35 Draconis. I8. 14-54-9 4,463 || Io. 2.30,8 1,35 | 5.6 | .985 5,647 5,735 ||40. I 5. 2,8 - - || Io. 2.22,2 - - 5 - - || - - - - || 4 I. 52.33, I | 1,850 | 14.48.32.6 || 4,59 || 5 || >966 3,782 3,912 || 5o. 59.25 :: 4,925 | Io. 18.43,4 5, 19 || 7.6 | .984 5,494 | 5,584 |19. 6.. 9, 1 || 2,372 | 13.14.52,6| 5,56} 6.7 ,973 || 4,248 || 4,364 || 56 Draconis, 16.2O,O | 2,084 13.46.43,O | 6,58 || 5.6 || >971 || 4,08o 4,200 || 59. 28.26.5 | 1,953 13.50.34,8 7,56 || 6 || 971 4,058 4, 179 2O. 4.59,2 | 1,487 I4. 4.54.3 Io,4o | 6 || 970 3,986 || 4, Io9 || 69 Draconis. I 5.20,6 | 1,769 12.53.48,3 II,2O || 5 || 974 4,368 4,481 || 1 × Cephei, 21, 9.12,6|o,952 | 12.41. Io, I 14,74 5.6 ,97.5 || 4,442 4,553 || 77 Draconis. + 22. 21.53,2 ox622 | 12.46.29,0 18,24 || 7.8 || 975 || 4,415 || 4,527 | 25. 3, I | O. 573 || 12. 13.59.9 | 18,35 | 6.7 | 977 4,612 || 4,719 || 28. § 1. Cephei. 27.57,6|o 654 12.12. Io,2 18,46 || 6.5 || 377 || 4,624 || 4,731 || 29. 6 2. 28.40,6 | I, Ioš 14:48.15,9. 18,48 || 7.6 ,967 3,783 || 3,913 23. 31.1452 2,351 13.29. O,4 19,89 || 4 || >972 4, 17 I 4,289 || 35 y Cephei. 58.33, I 3,928 I 1.23.47,2 | 20,05 || 6 | ,98o 4,961 5,061 | 238. A Catalogue of Circumpolar Stars, jan. o. 1806. [CHAP. III., -T- zo N E F Rom 15° to 19° N. P. D. 1 s T A N c E 1 N c L U S I v E. —h- R. A. in Time. An. Praec. N. P. Diſt. An. Praec. Mig. Sine. Tangent. Secant. || Name or Desirion. + tºma --. -ur- *-ºr-wºr- h / // // O / // // - - o, 32.41,3| 3,718 | 16. 6.19,7| 19,85 || 6 || ,961 || 3,463 3,605 || 2 I Caffiopea. 34.40,0|| 3,739 | 16. 14.45,o | 19,82 | 6 || 96o | 3,431 3,574 || 23. I. 2, 3,3| 4,086 19.19. 7, I | 19,30 ! 6.7 944 2,852 3,023 22.48,4| 4,522 || 17.59.1 1,3| 18,76 || 6 || 951 3,080 3,238 || 4o h Caſſiopeas. 46.38,9| 4,847 | 18.33. 16,5 17,95 || 4 || 948 2,98o 3,143 || 5o f. ! 48. 533 5,125 | 16.23.14, 17,87| 7.8 959 || 3,400 3,544 || 51. 52. 9,6| 4,845 | 19.23.44,6|| 17,79 || 7 || >943 2,840 || 3,011 || 54. 2. 19.20,3| 5,401 | 18. 4. 4.7 | 16,47 || 5 | ,951 3,066 3,224 || Caſſiop. Hev. 36. 50.37,4| 6,140 | 16.22.55, I | 14,77| 6.5 || >959 || 3,402 || 3,546 || - - - - 37. 3. 29.28,9| 6,683 | 19.18.13,3| 12,27 | 5 || 944 2,855 3,025 || Camelop. Hev. 5. 4. Io.33;3| 6,733. 17.55.46.9 || 9,26| 7.6 || >951 3,092 || 3,249 37. Io,0 7,402 | 16. 4, 16,2 || 7,24 || 6 || 396 I | 3,468 || 3,613 39.28,8 7,282 | 16.33.43,O 6,92 || 7.6 || >958 3,361 3,507 39.39,7| 7,373 | 16. I 5.31,8 6,89 || 6.7 || >96o 3,430 || 3,572 w 47.2O,O | 7,392 | 16.20.30,5 | 6,33 || 6 || >959 || 3,412| 3,552 || Camelop. Hev. 18. + - - 6. I 2.34,5 7,665 | 16. Io.49,4 || 1,05 || 6 || >96o | 3,446 3,588 7. 35.58,3| 7,444 15.34.31,2 8, 15 || 5 || >963 3,587 3,724 * 9. 15.41,7| 5,967 | 16.55. I 5,4 15,08 || 6 || >956 3,287| 3,436 || 22 Urſae. d 16.32,3| 5,566 | 19.18. 6,6 | 15, 13 5.4 944 2,855 3,025 || 24 d. 24. II,9| 5,848 || 16.51. 1,7 I 5,56 || 6 || >957 3,391 || 3,450 || 27. 40. 9,5 5,7 II | 16. Io.52,9 | 16,42 || 6 || >969 || 3,446 3,588 | Io. 28.32,5| 4,503 || 19.53. 6,7 | 18,48 || 5 || >940 2,765 2,940 || Urſae Hev. 35. | 11. 19.22,2 3,738 | 19.34, 3,7| 19,72 || 3.4 942 2,813| 2,986. || 1 A Draconis. w 24, 9,7| 3,656 | 19.34, o,4| 19,8o 6.5 | >942 2,813| 2,986 || 2. 42,42,7| 3,442 15. 7.39,5 | 1999 || 7 || >965 3,793 3,856 12. 5:30,1 2,982 | 18.40. 14,0| 20,04 || 6.7 | >947 2,969| 3,124 . 6, 9,6| 2,948 || 16.20,18,2 20,04 || 7 || >959 || 3,412 || 3,556 || ſe 21. I 5,5 2,724 | 19.4:1. 18,8] I 9,96 || 5.6 2941 2,794 2,968 || 4 Draconis. 24.50,8 2,658 || 19. 6.16,9| 19,94 || 4.3 ,945 2,886 3,055 || 5 k. 26, 1,3| 2,627 | 18.52.27,8| 19,92 || 6 || 946 2,925 | 3,991 || 6. 13. 7.46,5 | 1,722 | 16. 8.38,0| 19, 18 || 7 || 96.1 ! 3,455 || 3,596 21. 2,5 1,496 || 16.33.52,O | 18,81 || 7 || >959 || 3,397 3,541 32.22,4| 2,433 17.44. 1, 1 | 18,46 7.6 | >952 3,127 | 3,283 14. 8.22,9| 1,081 | 19.37.41,4| 17,oo | 6 *947 2,806 | 2,979 CHAP. III.] 4. Catalogue of Circumpolar Stars, jam. o. 1800. 2. 39 • ſº - - se-ster- .- * ... ſº-: - - —t— -zeese. zo NE F Rom 15° to 19° N. P. D 1st AN ce 1 N c L Us IV E-continued. s: sºr--rrºr--, R.A. in Time. An. Praec. N. P. Diſt. An.Praec. Mag. Sine. Tangent. Secant. || Name or Deſcription. . ºr <-- ºr--> ºr •z -z sh / // | + ! o / // + - - - 14. 44.53,8 O,23o 17. I2. 4,4} 15,08 || 7.8 || >955 | 3,230 } 3,381 || 6 Urſae Minoris. 51.25,5|-o,320 15. I.43;o 14,69 3. ,966 || 3,724 3,856 7 (3. ! 15. o. 18,3|+o,06o 17.27.15.4; 14, 18 || 7 || 954 3,181 || 3,334 || 9. 6.20,6 o,47 I I 5.2O.44,O I 3,77 7 ,965 3,685 3,819 || Io. | ,954 3, 18 I 3,334 || II. called by L. C. Y. I. ,965 3,671 3,871 ,954 3,181 3,334 || 13 Y. Or Y 2. 3,459 3,600 ,958 || 3,360 | 3,505 * , ,963 3,567 3,706 || 29 Draconis. : 3,121 3,279 || 31. J. I. Drac. 1ſt >k ,952 3,124 3,28o || - - - - - 2d º 9951 3,081 | 3,239 || 34. ), 2. I7.22,2 o, 16o | I7.27. 7,of 13,05 19. I9,7| o, 14o! I 5. I4. I3,5 . I 2, 16 2I. 8,4 o, 188! I7.27. 7,7| 12,89 16. 17.57,7| 1,106 | 16. 7.27,2 8,63 | | 17. O.19,6] 1,270 | 16.34.35,6| 5, 19 38.14,2| I,676 15.39.35,3| 1992 45.3O,4| I,09 I 17.45.22, I I,27 45.31,9| 1,096 || 17.44.49,0| 1.27 58.38,8| 1,050 | 17.58.43,O o,09 *s 6 29 6 { 4. 22 99 55 4.2. >947 2,943 3, Io9 || 43 p. 3, I 99 || 3335 I || 44, 24- >969 || 3,453 3,593 ſº ,945 2,909 3,076 || 52 v Draconis, ,956 || 3,267 3.416 6o T. ,962 3,549 3,688 || 73. 18. 23:35.9 o,839 18.46. 16,2| 2,07 24-37,2| I, I84 I7.2 I-28,3| 2,15 50.41,7| 1,431 | 16. 9- 6,9| 4,41 56.46,O o,702 || 18.58.18,2| 4,91 4. 19. 19.17,6| 1,034 17. 1.10,6| 6,82 2O. 33.58,6 o,645 15.44. o.o. 12,49 - + ,942 2,807 2,980 || 1 I Cephei. ,947 2,965 | 3, 129 || 78 Draconis. 2.955 3,223 3,374 || 79- e ,952 3,120 3,276 || 16 Cephei. 2,97 I 3, 135 º ,947 2,964 3,128 || 24 Cephei. ,946 2,927 | 3,093 || 8o Draconis. 3954 3, 192 || 3,345 || 31 Cephei. 3963 3,559 3,697 || 33 7. >962 | 3,535 | 3,674 395 O ! 3,044 332 O4. 2956 3,249 3,399 21. 38.55,4| o,876 | 19.36.33, I | 16,28 | 40.32,8 o,8o3 | 18.35.28,8 | 16,45 5.o.21,2 o,757 | 17.14.21,6 | 16,91 56.19.4| o,931 17.46.17,5| 17,22 #22. 3.24,3| 1,086 | 18.36. 9,6|| 17,36 5.54,7| I, 180 | 18.38.39,7| 17,59 6. 17,2 | 1, 145 | 18.51.46,5 17,62 30,48,8] I,446 I7.23.38, I 18,55 !- 23, 1.33,4| 1,866 15.41.33;o | 19,40 Io. 18,8 2,049 | I 5.47-35,3| 19,57 25.40,6 2,460 | 18. I I, 23, I Ig,82 30.44, I 2,509 17. 6. 19,5| 19,88 5 tº:r > 9 4. 8 7 : 24O 4 Catalogue of Circumpolar Stars, jam. o. 1800. [Char. III, zo NE 20°, 21°, A N D 22° N. P. D 1st A N cle IN clusive. R. A. in Time. An. Praec. N. P. Diſt. An. Præc. Mag. Sine. Tangent. Secant. Name or Deſcription. + tº- —r- h / // // O A // // “, o. 57. 18,2| 3,870 22, 17.21,7 | 19,43 || 6 || 925 2,44o 2,637 || 31 Caſſiopeas. I. 12. 9, 1 4,045 22.55. 8,5 | 19,07 || 6.5 , ,921 2,365 2,568 || 36 k. 16.33,4| 4,265 20,46. 13,6 | 18,95 | 6 || 935 | 2,637 2,820 || 38. •. 18. 6,5 4,135 22.37.27,9 18,90 6.7 ,923 2,399 || 2,599 || Caſſiopea Hev. 28. 27.39,9| 4,411 | 20.23.39,1 18,61 || 6 || 937 2,689| 2,870 || 42 g Caſſiopeas. 27.42,4| 4,244 22.58.33,5 | 18,60 || 6 || 392 I 2,358 2,562 || 43 c. 40.39.4| 4,455 22, 18. 17.6 18, 15 || 6 || 925 2,438 2,635 || 46 d. 45-49,3| 4,799 20. 4, 8,7 17,90 || 5 || 939 2,737 2,914 || 48 e. 5. 31.27, I 6,409 21.36.58,3 2,53 || 6 || >929 2,523 2,714 35.5439 || 6,630 | 20.27.27,5 2, 15 || 7 | ,937 2,68o 2,861 j + w º - 6. 29.59,9| 6,325 22. 13.5o,8 2,60 || 4.5 ,926 2,446 2,642 || 42, Camelopardali. 32. O,8 6,532 20.54. I3, I 2,72 6.5 ,934 2,618 2,893 ||43. 7. 9.56,2 6,366 21. 9. 3.2 5,99| 5 | ,932 2,585 2,772 || Urſae Hev. 1. 52.43,3| 6,147| 20.57.37.7 || 9,14|| 5 || 934 2,61o 2,795 || - - - - 3. 8. 4, 7,9 6,138 26.27.49,0 | 10,32 || 7 || 937 || 2,679 2,860 44.18,0 5,600 21.36.31,5 | 13, 15 | 5 || 930 2,524 2,715 || 8 e Urſae. 5o.38,2 5,455 22.20.25,5 | 13,59 || 5 || 925 | 2,433 2,630 || II. a 1. 52.35.5 5,470 22, 4, 17,3 | 13,71 5.4 ,926 2,466 2,661 || 13. a 2. Io. 59, 14.6 3,979 20.38.51,8 || 19,35|| 7 || 936 2,654 2,834 11. 31.10,9 || 3,476 22, 8.59,5 | 19,89| 6 || 926 2,456 2,652 || 3 Draconis. 12. 39.18,4 2,509 22, 6,47,7 | 19,76 || 6 || >926 2,461 2,657 || 7. 49. 14,O 2,368 || 21.40.43,4 | 19,61 || 7 || 929 2,516 2,707 52. 19,0 2,334 22, 19.45,0: 19,53 || 6 || ,925 | 2,435 | 2,632 || 9 Draconis. 15. 8.49.4|o,574| 21,27,566 | 13,67| 7 || 931 2,543 2,732 || 16. 28.25,2 o, 17o 20.47.56.4 || 7,89 5.4 || 3935 2,632 2,816 || 15 A Draconis. 17. 32.46,o o,263 21,44. 14.9 2,37 || 5 | ,929 2,508 || 2,700 || 27 f. 33. 1,3 o,528 20. I 5.36,9 2,36 || 8 || ,938 2,710 2,888 38. 7,2 o,371 || 2 i. 8.59,5 2,23 4.5 ,982 2,584 2,771 || 28 0 Draconis. 38.23,c o,527 | 20, 18.27, 5 | 1,92 || 7 || >938 2,703 || 2,882 18. 16.26,8 o,345 21.19. 14,5 | 1.40 || 7.6 ,931 2,561 2,749 37 Draconis. 18. 7,2 o,343| 21.20.34,2 | 1.40 || 7 || 931 2,559| 2,747 ||38. Char. III.] 24. I A Catalogue of Circumpolar Stars, jam. o. 1800. t —a *=- * zoNE 20°, 21°, AND 22° N. P. D 1st A N ce 1 N clusive—continued. N R. A. in Time. An. Prec. N. P. Diſt. An. Praec. Mag. Sine. Tangent. Secant. Name or Deſcription. h A // ... // O / // : 19, 12.27.3 oo33 22.41.22,2 6,24| 3,4] 222 2,392 || 2,592 || 57 & Draconis. d 32.41,7| o,188 20.40.35,6| 7,89 || 4 || 936 2,650 | 2,832 || 61 a. 48.46,o o, 156 | 20, 14.34.4 || 9,16 || 4 || >938 2,712 2,890 || 63 s. + 20. I.5.1,2] O.316 || 22.41.5o,2 | Io, 16 || 5 || >922 2,391 || 2,591 || 67 e. 21. 26. 1,7| oš21 | 20.19. o.4 15,69 || 3 || >938 2,701 2,880 || 8 |3 Cephei. 22. 27.14s I,7oi 21. 6.52,6 18,43 || 6 || >933 2,589 2,775 | 42. Io,6| 2,128 22.29.21,3 | 18,90 || 6 | . ,924 2,416 || 2,614 23. 7.58, I | 2,251 | 20.12. 7,4 | 19,53 || 6 || >938 2,717 | 2,896 Io,27,3| 2,395 22.58.52,9 19,58 || 5 || >921 2,358 2,561 || 34 o Cephei. / ress º ~º- --- --> --> --~~ * ~ * * 242 A Catalogue of Circumpolar Stars, jan. o. 180c. [CHAP. III. Z O N E 23°, 24° N. P. D Is T A N C E, ET U L T R A. * * * --- x-r-y | R. A. in Time. An. Praec. N. P. Diſt. An. Praec. Mag, Sine. Tangent, Secant. || Name or Deſcription. . —— *sºng -v-s *~x-w h / // A/ - O / // // ‘s. - • O. 20, 2,2 3,324 24.35. 16 || 19,97 || 8 || ,999 || 2,185 2,403 || 13 Caſſiopeas. 23.5937 3,392 || 23. Io.34,O | 19,97 || 7.8 ,919 2,333 2,538 I, 58.57,8|4,542 24.25.22,3 || 17,44 || 7 | 91o 2,202 || 2,419 || 55 Caſſiopea. 2. 12.47, 4,747 || 23:36,23,9| 16,83| 4.5 ,917 | 2,299| 2,507 || Caſſiopea Hev. 35. 3. 2.3235 | 5,084 25. 5.37,o 14,18 5 || >906 || 2,135 2,358 Camelop. Hev. 1. 27. I 594 | 5,485 23.26.35,2 12.40 || 6 || 3917 2,304 2,512 -- 31.2 ſ, 4 5,337 25. 6.30,4 12,28 || 5 || 905 2, 134 2,356 || Camelop. Hev. 7. § 4. 2. O,3 5,507 || 25.22. 8,7 Io,02 || 6 || ,903 || 2, Io9 || 2,333 || - - - - - 13. 30.2756 5,863 || 23.49.47,8 7,67| 7.8 || 9 | 5 || 2,264 2,475 || | - 34, 1993 || 6,354 24, 1.18,5 7,27 | 5.4 || 913 2,244 2,456 || Camelop. Hev. 17. 5. 17.56,4| 5,762 25.59.59,3| 3,72 || 6 | 899 || 2,050 2,281 || 19 Camelopardali. 22.25.7 5,967 24, 26. I I,7 || 3,32 6.5 ,91o 2,261 2,417 4. 52.43,6 6,032 24.16, 9,4 o,69 || 6 || ,912 2,218 2,483 || 36 Camelopardali. 55. 1439 6,090 23.49.21,7 o,52 6.7 || 9 | 5 || 2,264 2,478 57. 296 || 6,034 24, 14.29,0: o,35 | 7.8 ,912 2,220 | 2,435 * -H 7. 27.25.5 5,844 24, 5.16,4| 7,40 | 6.5 913 2,237 2,450 || 51 Camelopardali. 8. 16.31.8 5,535 | 24. Io.43,8 || 1 1,21 || 6 || >912 2,227 | 2,441 || 2 A Urſae. 21. 16.7 5,483 24, 18.31, I | I I,56| 5.6 || 9 || 1 || 2,214 || 2,429 || 3. 7 I. 22:34,7| 5,396 24.59.49.7 | 1 1,69| 5.4 || >906 2,144 2,366 || 4, 7 2. 39.18, 5 5,306 || 24.38.58,8 12,83| 6.5 ,909 || 2, 179 2,398 || 6. 9. 15.35.8 || 4,854 26. 4.43,5 15, 12 || 4 | 898 || 2,043 2,274 || 23 h. 28,41,9| 4,900 24, 6.55, I | I 5,82| 7 || 39 13 2,234 2,447 30,22,9| 4,799 || 25.25.40,5 15,89) 7 ,903 2,103 || 2,329 || 28 Urſae. Io. 3.29, 4,55o 23:54, 5,7 | 17,45 || 5 || >914 2,256 2,468 || 32. tº ſº 9.31,4| 4,498 || 23.25.44,6 17,75|| 5 || 918 2,307 || 2,515 || Urſae Hevelii 3o. 15.31,O || 4,431 || 23.21.36,2 | 18,00 || 7 | ,918 2,315 2,522 || 35 Urſae. 16.22,2 4,336 24.43.22,9 18,04 || 7.6 | 1908 || 2, 172 2,391 28. 8,O 4,284 || 23. 14.36,7 18,46 || 5 | ,919 2,328 2,534 || 38 Urſae. II. Io. 59,9 3,689 24.34.44,8 || 19,59 || 6 || >909 || 2,186 2,404 | 12. 47.28,6 2,441 23.28.28,2 | 19,63| 6 | ,917 | 2,300 2,509 || 8 Draconis. ..] - - § I 3. 35.14, I | 1,868 || 24. Io. 6,9 | 18,37| 7 || 3912 2,228 2,443 + 45.35,O | 1,738 24, 17.22,O 17,90 || 5 || 9 | 1 |,2,216 2,431 || Io i Drac. v. 87 Urſae. 58.58,6 | 1,612 24.40. 4,6 17,36 || 4 || 999 || 2,177 2,396 || II & Draconis. - - | •w CHAP. III.] 243 A Catalogue of Circumpolar Stars, jam. o. 1800. *— zo N E 23", 24° N. P. DIST A N C E, ET U L T R A–continued. . |. r , R. A. in Time. An. Praec. N. P. Diſt. **** Sine. Tangent. Secant. Name or Deſcription. + + h z 2,. // o, 2 // // |14. 54.25.5 o,926 23, 16.21,8| 14,53 || 6 || 918 2,325| 2,531 || Drac. Hev. Io. 16. 39.33,5 o,383 25. I.5o,5 6,9} | 5 || >996 || 2 2,361 || 18 g Draconis. 54.56,7| o,259 24.33.28,6: 5,61 || 5 || >999 || 2, 188 2,406 || 19 h. | 55.27.9 o,279 24.39, 4,4| 5,58 || 7 || >999 || 2,179| 2,397 || 20. 17, 8.13,5 o,132 24, 2.14.6 || 4,5 : | 3 || >913 | 2,242 2,454 || 22 & 18. 12-43,4 o,296 || 25.40. 9,2 I, II 6 ,901 2,08 I 2,308 36. * 25.22.9 o, 162 24.33.27,3 2,2O 6 || >999 2, 189| 2,406 | 42. 19. 8.57,7| o,25o 24.2 I. I 5,7 5,94 || 6 || 39 I 2, 2,425 55. 19.36,3} o,337 || 24.40. 6,o 6,83 || 5.4 || >998 || 2,177 | 2,396 || 58 7. 59. I 3,7 o,664 25.44. 9,4 IO,O2 5.6 || 390 I 2,073' 2,301 || 64, e I. 2O. O. 5, I o,682 || 25.55. I4,9 |. Io,02 || 7.8 ,899 || 2,057 2,287 || 65. e 2. 41. 723 o,787 24, 5.48,8 12,97 || 6 || >913 || 2,236 2,449 || 4 Cephei. 2 I. 23.52,O 1,184. 24, 3:40, I 15,57| 7.6 || 913 | 2,239 2,452 || 7. |22. 21.39,0 | 1,905 || 25.55.58: 18, 17 | 6 | 899 || 2 2,289 || 26. 42.35,7 | 2, Io9 |. 24.5I. 2, I 18,92 || 4 || >997 2, I 59 2,379 || 32 i. 55.57,7 2,232 || 23.52. O,3 | 19,27 | 7.6 ,914 | 2,26o 2,471 23. 37, 9,5 : 2,772 24. I 9.403.3 I 92.95 || 7 || 39 II 2, 2,427 38.25,6 2,783 23.18.2O,8 19,96 || 5 || 9 || 8 || 2 2,527 || Drac. Hev, 41. | \ l t I 245 Ax. C H A P T E R IV. R E M A R K S O N T H E PRE CED IN G CATAL O G U E : W IT H AN A CCOUNT OF A SET OF MAPS WHICH HAVE BEEN ENGRAVED F ROM IT. H E foregoing Catalogue, it is believed, is properly deduced from the Obſervations. But if any future Obſerver ſhould find one or more of thoſe Stars out of the place aſſigned to it, he will do well to exa- mine the truth of the dedućtion : for, ſince every man is liable to miſtakes, and fince all the Data are here before the Reader, ſuch examination may be made with no great difficulty. The Tables by which the whole was calcu- lated, will be found in the Appendix; and the Natural Sine, Tangent, and Secant of the Declination of each Star, are ſet down in the Catalogue, in readineſs for the multiplication of the numbers taken out of thoſe Tables. Many of theſe Stars may be liable to a ſmall change, perceptible after a term of years; but it is neceſſary to be certain that the original obſervation or redućtion was true, before any motion can be affirmed. Through a defire of completing the Plan, and rendering a farther ſervice to Aſtronomy, a ſet of Plates have been engraved, whereon all the Stars are carefully laid down from the Catalogue. They form a diſtinét work; and may be purchaſed ſeparately, as each perſon ſhall chooſe. The whole conſiſts of ſeven Plates; forming together twenty-five con- centric Circles, at , of an inch aſunder: compriſing ſo many degrees from the North Pole. The middle Plate contains Io degrees. The others, which are ſuppoſed to go round the former, comprehend 15° more. They are ſo formed as to be complete each of them apart; and capable of being bound together in ſucceſſion in a thin volume; or to be paſted on cloth into one large map. The 246 * Remarks on the preceding Catalogue, &c. [CHAP. IV. & The Stars are engraved of the reſpective ſizes they were judged to bear to each other. In the Catalogue itſelf, as well as in theſe Plates, the names or letters, and numbers, have ſcrupulouſly been retained, as they ſtand in Flamſteed's Edition of 1725 : for a change in a name of diſtinétion, even from a worſe to a better, always breeds confuſion. For the ſame reaſon, each of the old Conſtellations is alſo traced on the Plates with a very faint outline (keeping as nearly as might be to the deſcription of each Star ; though in ſome, that was not poſſible, without diſtorting an uncouth figure too much) that, without eclipfing the Stars, it may at once be known to which Conſtellation each letter or each number belongs. At the ſame time it was endeavoured, that the general complexion of the Map ſhould bear ſome reſemblance to the real appearance of the Heavens, where no ſuch forms exiſt. a Beſide the Stars of the foregoing Catalogue, which are all deeply cut, many others were intended to be inſerted of a faint hue, laid down only from their reſpective poſitions as they appeared in a night teleſcope, with a ſyſtem of wires, as propoſed formerly. Being ſo diſtinguiſhed from the others, they were meant to ſhew what numbers in this diſtrićt call for farther inveſtigation. But a threatened failure of fight warned the Author what he had to do, to do quickly; and to arrange the Obſervations he had made, rather than attempt to purſue his favourite ſtudy any farther. What he has done, he hopes will be found convenient to the pračtical Aſtro- 1) Of Il CT, In the Catalogue itſelf, a few Stars will have been found which exceed the limits of the Map. Having been obſerved, they were calculated, though they were beyond the plan propoſed. Two of them were intro- duced deſignedly, e i and e 2 Draconis. Becauſe e i being double, and e 2 ſuppoſed not to be viſible at preſent, it was imagined they might be nearer now than they were in F lamſteed's days; and it was wiſhed to aſcer- tain the truth. In relation to 40 and 41 Drac. which are not in the Edition of 1712, and which now are much nearer than they ſtand in the Britiſh Catalogue of 1725; the fact is, that they were not rightly placed in that Catalogue: for Flamſteed's Obſervations give very nearly the ſame diſtance they now bear. But in reſpect of e i and e 2 Draconis, that is * 11Ot CHAP. IV.] Remarks on the preceding Catalogue, &c. 2.47 not the caſe. They were obſerved twice by Flamſteed ; and both the Editions of the Britiſh Catalogue agree with his Obſervations. The fact in relation to them likewiſe turns out, that they bear nearly the ſame diſtance by my Obſervations as they did in Flamſteed's days: ſo that it was not quite without reaſon that it was aſked, when I publiſhed my General Catalogue, “Are they nearer than they were in Flamſteed's time : * Neither 40 and 41 Draconis, nor e I and e 2 are ſenſibly altered in their reſpective diſtances from each other. A careful peruſal of the accounts collečted and compared together in Chap. II. concerning each Star in this new Catalogue, will furniſh no ſmall degree of information to the inquiſitive Aſtronomer. Errors he cer- tainly will diſcover, at which an Obſerver in theſe days ought to bluſh. But when he confiders the imperfection of inſtruments a century ago, he will many times be ſurpriſed to find with what accuracy ſuch Obſervations were made. Hevelius meaſured the relative diſtances of the Stars, for the moſt part, with a Sextant of a little above ſix feet radius, and with plain fights. And for Stars near the Pole, that method on ſome accounts may be eſteemed deſirable. But the labor of turning the plane of the inſtrument into the true direction, and of calculation afterwards, muſt have been very great, and rendered the whole very tedious : added to which, a very ſmall error, either in the obſervation or the reduction, would throw the RAs near the Pole very wide of the truth. Flamſteed began his Obſervations with a Sextant too, of ſeven feet radius, but with teleſcopic fights. Yet after September 1689, when he had ſet up his Mural Arc, he ſeldom had recourſe to the Sextant. From that time, he obſerved the paſſage of Stars over the Meridian, with a teleſcope moving on the limb of an arc of ſeven feet; and, reading off the diviſions on the limb, deduced the RA and PD of every obječt from thence. In this he ſtill had many difficulties to encounter. The Obſervations themſelves indeed were made with eaſe. But the errors in the plane of his mural arc; the errors of his clock, which ſeem to have been very great indeed; and the errors of his diviſions; added to the progreſſive error in - the 248 Remarks on the preceding Catalogue, &c. [C HAPs Iv. the ſcrew of his micrometer, which, by wearing, ſeems to have amounted toward the laſt to Io' of a degree ; muſt have occaſioned infinite labor to him in the redućtion. Perhaps to this cauſe may be aſcribed, ſome of the differences between Dr. Halley's Edition of 1712 and Flamſteed's own, publiſhed in 1725; ſome allowances being afterwards made by Flamſteed himſelf, for cauſes of error which were unknown to Halley; while thoſe calculations made by Hailey in the vigour of his age, might, in ſome inſtances, be more ac- curate than Flamſteed's own reviſion, who was then in the decline of life. Be that as it may ; it is often of great advantage to the inquiſitive, that we have the two. Yet ſhould Flamſteed's own Edition of 1725 alone be conſulted, and ſtrictly adhered to, for the names and numbers, and deſcriptions; ſince that has always been followed by Aſtronomers, and flamped a decided name upon each Star in the Britiſh Catalogue. wº .* * * g - **, *. tº - aw - s' [ 249 ! - * C H A P T E R v. * O N THE TRANSIT CIR C L E, w IT H W H I C H THE O BS E R V AT I O N S W E R E M A. D. E. A PART1cul, AR DESCRIPTION of this Inſtrument having been readd at the R. Society May 9, 1793, and honoured with a place in the Phil. Tranſ for that year, need not be repeated here; ſince it is already in the hands of moſt Aſtronomers. Yet the Deſign of the Inſtrument ſeems by many perſons to have been miſunderſtood. At leaſt, no one I believe has ſince been made on the ſame principle. On the contrary, that ſtability which was ſtudied in it, has been given up, to make way for an eaſy revolution of the whole Frame; which muſt totally defeat the profeſſed intention of this Inſtrument, and convert it to a different purpoſe. The Deſign was, not to adapt a Tranfit Teleſcope to a Circle revolving freely in Azimuth ; but to apply a Circle to a fixed and ſtationary TRAN's IT INSTRUMENT ; and to read off the Zenith Diſtances and Altitudes on that Circle in ſuch a way, as ſhould be quite independent of the Circle itſelf; in no other way connected with it, but by being attached to the piers on which the pivots reſt. In a capital Obſervatory, thoſe piers ought certainly to be of ſtone, as they are in every good Tranſit Inſtrument. In mine, ſability was ſtudied, but not on ſo large a ſcale. It was too ſmall to be placed between ſtone piers. Its ſupports therefore were neceſ. ſarily to be of braſs : braſs pillars: but they were to be as ſteady as art could make them. They were to carry the pivots and the microſcopes; K. k which 25o On the Tranſit-Circle. [CHAP. V. which latter, it was imagined, would be moſt out of the way of injury by being above and below the centre. The whole was to ſtand upon one large ſtone cylinder. For the convenience of reverfing it occaſionally, without lifting, which might greatly derange ſome parts of it, the bottom plate was made capable of turning on its frame with tooth and pinion; on a circle truly turned, to which it was afterwards ground; and to which, in each poſition, it was to be firmly clamped by four clamps, before any adjuſt- ments, after reverfing, were attempted. The pillars thus ſixed were intended to remain, and in fačt did remain, immoveable. When once brought round to their poſition either way, they ſtood on a baſe wider than the length of the tranſverſe axis of the teleſcope; and might be conſidered as fixed piers, with all the adjuſtments of the pivots in the Ys themſelves; which I muſt hold to be eſſential to good performance in every kind of Tranſit Inſtrument. t Thoſe Inſtruments which have fince been made, though pretending to be ſimilar to this, all of them turn freely in Azimuth. But as no man in his ſenſes would wiſh to make his Tranſit Inſtrument revolve freely in Azimuth. ; or be moveable at all in that direction, excepting the very ſmall quantity of delicate adjuſtment neceſſary to bring it truly into the Meridian ; ſo neither ought it ever to be thought of in this. An adjuſt- ment there, muſt be of the wires in the focus of a Tranſit Teleſcope, to bring the axis of viſion to be truly at right angles to the tranſverſe axis. And till that is done; or till an Obſerver has placed two Meridian marks exactly oppoſed to each other, whereby he may, without diſturbing any thing, examine whether the Collimation in RA remains true; he muſt re- verſe the Inſtrument in its Ys for that purpoſe. Yet if a Tranſit Inſtru- ment be well made, and he is not very rough in the handling of it, he will very ſeldom find the Collimation in RA to vary. Wherefore then ſhould it in this Inſtrument; which is really to all intents a Tranſit Inſtrument, {trengthened by a circle : Yet ſtill leſs is repeated reverſing wanted in reſpect of the Collimation for Altitude. Thoſe wires, though in mine they are adjuſtable, would better be fixed. And ſo it has been ſaid. Yet, if adjuſtable, they are fill leſs liable to be deranged by any common handling than the others; becauſe the Inſtrument moves freely in that direétion ; and if well made, they cannot call for more frequent examination than the others. Nothing but very CHAP. V.] On the Tranſit-Circle. 351. very rough uſage indeed, or letting the ſun ſhine upon the Inſtrument, can ever derange the Collimation in Altitude, if the objećt-glaſs be well fixed. Some Error moſt commonly there will be found in the Axis of Viſion, or . the ſituation of the wires, in reſpect of the beginning of the Diviſions on the Circle; or rather, it ſhould be ſaid, in reſpect of the Dots by which the Plumb-line and the Microſcopes are adjuſted. That is truly what I under- ſtand by Error in Collimation; i. e. Error in the Axis of Viſion : but That will in itſelf be conſtant. It may appear otherwiſe to an unſkilful Obſerver, or one inattentive to the true cauſe. But this Error in Collimation can ſeldom vary: it muſt continue the ſame, till the objećt-glaſs or the wires are moved, in reſpe&t of the Diviſions on the Circle; and it muſt hold the ſame at every Altitude. An Error in the adjuſtment of the Microſcopes, will likewiſe be in itſelf the ſame in every part of the Circle : but I apprehend, that ought not to be called an Error in Collimation, in which the Axis of Viſion is not con- cerned. Beſide, a perſon who who can err much or frequently in that reſpect, is not fit to uſe ſuch an Inſtrument: no reverſing of it will ever produce a good obſervation in his hands. * An Error there may be, and ſometimes will be, at certain Altitudes, which there is not at others. Yet is this not properly to be called any Error in Collimation, but in the Diviſions themſelves, or ſome eccentricity of the Circle; for which allowance muſt be made where it exiſts. Yet this alſo will in itſelf be conſtant. All theſe are ſeparate cauſes of Error, which require inveſtigation ; and which muſt be inveſtigated apart: and can only be diſcovered by patient and diligent attention; by reiterated calm obſervation of the ſame Stars on two or more ſucceſſive nights ; ſeeing that every adjuſtment be true after reverſing the Inſtrument, in whatever way that be done; and noting down all the circumſtances which could poſſibly give occaſion to any miſtake in the concluſion *. Examinations * The mean Error in Zen. Diſt. of a number of Stars at different elevations, obſerved with the Face of the Circle in oppoſite direétions, will give a ſum which will be nearly the true Error in Collimation; unleſs the Inſtrument be very ill made indeed, or the Obſerver very inaccurate. K k 2 The eas 252. - On the Tranſit-Circle, in [CHAP. V. Examinations of every Inſtrument are certainly proper to be made, and ſome of them to be reſumed from time to time, leſt ſuch parts as are capable of being deranged ſhould alter; and therefore it is proper to have things ſo contrived, that they may be made with the greateſt eaſe, and leaſt . diſturbance of any of the parts. But the reverſing of an Inſtrument, be it large or be it ſmall, and playing with its adjuſtments, will always put it out of order; and therefore ſhould never be attempted till it can be done at perfect leiſure, or till the reſult of ſome one or more Obſervations point it out to be neceſſary. IIowever, be that as it may, and be the opinions of others different from mine, the TRANSIT-CIRCLE, I muſt be allowed to repeat it, was intended for the Meridian, and the Meridian alone : and as ſuch only was recom- mended by me. It was never meant for a play-thing, but for real uſe: for aſcertaining the RA as truly as the Meridian Altitude of an objećt, and the Meridian Altitude as truly as the Right Aſcenſion. And to effect that purpoſe, ſtability in every direction, allowing a free and perfectly true Vertical Motion in the Teleſcope, was indiſpenſably neceſſary. No incli- nation there ſhould be to preponderate any way. Not any general expan- fion of the metals themſelves ought to affect it. Partial ones, as in all. other Inſtruments, muſt be guarded againſt. Nothing ought ever to move any part from its poſition, but the careful and ſteady hand of the Obſerver The Differences between the reſults from each pair of Obſervations, will ariſe—either from Errors in the Diviſion—or an Eccentricity of the Circle—or from ſome Error in the Obſerver himſelf. t Errors in Diviſion are conſtant at the ſame point; but irregular between themſelves. Error from Eccentricity is regularly progreſſive, from a minimum to a maximum each way. Care indeed, very great care, and patience, are neceſſary to diſtinguiſh the one from the other, whether the Inſtrument revolves freely in Azimuth or not. But it is very poſſible to diſtinguiſh them: and when theſe are once known, they neither of them require any farther inveſtigation. Allowance being made for them, nothing but the ſimple and what I call true Error in Collimation would remain, if the Obſervations could always be well made. But the Errors, ariſing from this laſt cauſe, are ſubjećt to no law : they depend upon the Obſerver himſelf, and will be greater or leſs, according to his ſkill; his care in guarding againſt any partial expanſions of the Inſtrument; the calmneſs with which he makes the Obſervation, and the eaſy poſture in which he contrives to place himſelf for that purpoſe. To all theſe muſt be. added, the different ſtates of the atmoſphere, and of the Obſerver's eye; which will unavoidably render Obſervations, condućted with the greateſt caution, many times, of doubtful reſult; and oblige the ſkilful Aſtronomer himſelf to ſtrike a mean between thoſe of different evenings. 9 himſelf; chap. v.] On the Traft-circle, 253 himſelf; who, if he be not calm and perfectly at his eaſe, will never make an Obſervation to good purpoſe with any Inſtrument whatſoever. *s This was the Deſign. of the Tranſit-Circle, with which the foregoing Obſervations were made. And I may now ſpeak moſt decidedly concerning it; that, ſmall as mine was, or whatever imperfection there may have been in my Inſtrument, which was the firſt in its kind, the TRANSIT-CIRCLE is capable of more good work than can be done with any other Inſtrument of any other form that has come within my knowledge. Roëmer's Circulus Meridionalis was moſt nearly approaching to it; and the confidence which Mayer ſeems to have repoſed in the triduum of Obſervations made with that Inſtrument, ſhews the opinion he entertained of it. Were I to give advice concerning the furniſhing of an Obſervatory on any ſcale, a TRANSIT-CHRcLE would be the firſt Inſtrument that I ſhould recommend. Indeed no good Obſervatory ought to be without one. Several years experience only confirm me the more fully in that opinion. But they confirm me likewiſe in the opinion, that there are certain limits within which to confine the Size of it. The Teleſcope muſt not extend many inches beyond the Circle either way. Neither muſt the Circle itſelf be ſo large as for the clamp to be out of the reach of the Obſerver's fingers while his eye is at the Teleſcope. The tender and delicate handling of that adjuſting ſcrew to biſe&t a Star with ſufficient accuracy, can never be truſted to a Hook's joint. Beſide, a large Circle will not be ſo homoge- neous in its whole contexture, and the entire face of its limb, as one of a ſmaller fize: neither is it poſſible it ſhould be of the ſame temperature on the oppoſite fides of a large circumference. On all theſe accounts I would ſtrongly diſſuade the having it too big. A Circle of three feet diameter is capable of as accurate diviſion as one of a larger fize. It might perhaps not be going beyond the truth to ſay, that it is capable of more accurate diviſion. A Teleſcope of 3 feet 6 (or 3 feet 9, as they moſt commonly run) will then be moſt fuitable to it, being about four feet long in the whole. Such a Teleſcope would be capable of great magnifying power; fully ſufficient for Meridian paſſages. The whole would be very ſtiff, and very manageable ; and with a tranſverſe axis of proportionate length, every part would be within reach for adjuſtment. The ^ º * 5 + - - On the Tranſit-Circle, [CHAP. V. The Ys I certainly ſhould recommend to be made to hang according to Mr. Smeaton's idea, and as executed for me by Mr. Cary. Experience has fully convinced me of the great preference to be given to them, before thoſe of the uſual make. And the manner in which he has hung the Y S; admits not of any ſhake in them. . . . . . . . * , , The Clamp alſo which has been applied to mine, is preferable to thoſe which have any ſpring. It has no will of its own. It can move ſide-ways freely, without any inclination to return. It keeps its elevation where you place it, yet is eaſily removeable from it; and it opens ſo wide as to ſuffer the Back-limb of the Circle to revolve freely through it. When clamped, it ſhould embrace that limb between two rounded ſurfaces, like a finger and thumb; ſo that a ſmall motion of the Adjuſting Screw may have no tendency to affect the Circle, excepting in a vertical direétion. * In the formation of my Inſtrument, I preferred a Plumb-line cloſe to the Limb, before the Ghoſt: and I have given my reaſons for ſo doing. But in that reſpect, I have ſo far altered my opinion, that were I now to give orders for another of the ſame general conſtrućtion, I ſhould direct the Plumb-line to be near the Pillars. And in a larger one, between Stone Piers, I certainly would recommend Mr. Ramſden’s Ghoſt. The Plummet, when near the Limb of the Circle, is in the way of Zenith Obſervations. And though in my Inſtrument it is only ſo in that part where an Obſerva- tion cannot be made on account of the Top-plate; yet it is certainly deſirable to have all clear. The Wire is much more ſafe from injury when guarded by the Pier itſelf. - * The Tranſverſe Axis I ſhould recommend to be of ſuch length, that the Y’s may be on the external ſide of each Pier, and not within. There may or may not then be Rollers on the inner fide of the Piers to take off part of the weight, as ſhall be judged beſt: but I own I dread the influence of Rollers on the RA. The Microſcopes will lie conveniently in that caſe on the corners of the Piers themſelves, ſo as to face the divided Limb of the Circle towards which ſide ſoever it may be turned. The Clamp, or rather the Clamps, for fixing the Circle, will then projećtſ from the Piers, and have the ſhorter bearing. The Polar Microſcopes (for Polar Microſcopes I certainly would recommend, as being very convenient indeed) may be * - - - *— - direéted directed down the inner face of each Pier, and by means of a ſmall oblique Speculum, ſerve to ſet the Teleſcope to the proper elevation, while the Clamp would be within reach of the Obſerver for fixing it there. The highth of the Piers may be according to his wiſh. I ſhould for my own uſe make them of five feet; a little below the level of my eye. The eye-end of the Teleſcope, when pointing to the Zenith, would then be three feet from the floor : and, whether the Obſerver chooſe a priſmatic eye-glaſs, or a ſpeculum, or direct viſion, fince all his apparatus will lie ſome inches above that highth, he may ſuit his own convenience. The diſtance between the Piers will depend upon the length of the Axis ; or more pro- perly the length of the Axis muſt be ſuited to the ſpace that is wiſhed for the Obſerver. - On the Tranſverſe Axis itſelf, I would, in all inſtruments of this kind, have a Level, conſtantly in its place. A ground Level I ſhould recommend, filled with purified aether; and hanging by inverted Ys at each end of it, lying upon round Pivots affixed to Cocks riſing from the Cones of the Axis, in the manner practiſed by Mr. Troughton. His Levels of Æther are far more ſenſible than thoſe of the beſt ſpirits. The hanging in that way is perfectly free, and as true as the motion of the Axis itſelf: greatly prefer- able to the hanging on Conical Points. They are eaſily adjuſted to paral- leliſm with the Axis, and are eaſily reverſed; and are at all times ready to detect any error that ſhould chance to ariſe in the levelling of the Axis. ** For reverfing ſuch an Inſtrument as here deſcribed, the moſt ſimple and moſt ſafe method, I ſhould imagine, would be a Crane, With this, the Circle may be lifted off its Pivots, to a ſufficient highth to clear the Microſcopes; and being turned round in a ſwivel above it, may be let down gently on the oppoſite Pivots. The Circle, when reverſed, will meet with Microſcopes and Clamps ready to receive it, and all of them within the limits of adjuſt- ment for real uſe. Whenever the Circle is reverſed, it may be adviſable to take that Oppor- tunity of examining the Meridian Marks, to ſee that they contiunue truly oppoſed to each other. The Collimation in RA can then be examined too. And the Collimation in Altitude, by a careful examination of the Altitude OJ" 256 *On the T.ranſit-Circle. - [CHAP. V. or Depreſſion of the Marks, with the face in contrary directions, ought to ºbe diſcoverable likewiſe. . . . . . . . . . . . . . . . . *%, - ** This has been my idea. And the few Obſervations of Zen. Diſtances We meet with in the annual ſeries we receive from the Aſtronomer Royal, con- vince me more and more, that no Obſervatory can be called completely fur- niſhed without an Inſtrument of this kind. A TRANsit-Circle: not a circular Inſtrument revolving in Azimuth, but a Meridian, or Tranſit Inſtru- ment, encompaſſed by a Circle, for determining the Zen. Diſtances with the ſame truth, and with no more trouble, than the R. Aſcenſions are obſerved. For in theſe Inſtruments, there is one very great advantage indeed: that, being ſo completely equipoiſed, and moving ſo very freely in a true vertical, and the reading-off being entirely independent of the Circle, the adjuſtments remain unmoved; not only for many ſucceſſive Obſervations on the ſame evening, but for days and weeks together ; which is a great eaſe to the Ob- ſerver. Whereas in a Quadrant, even a Mural Quadrant, or any inſtrument where the Teleſcope moves on a ſtationary Limb, a freſh adjuſtment of the Plumb-line, or at leaſt an examination of it, muſt be of abſolute heceſſity, after the Teleſcope is ſet, and previous to every Obſervation. Not that examinations of theſe or any Inſtruments ſhould ever be neglected; for the ſhorter the intervals between them, the leſs ſpace there is for doubt when any variation does happen: but if they are handled with care, variations will very rarely be found indeed. Thoſe who can doubt of this truth, have never calmly tried, or indeed ſufficiently confidered, without prejudice, the nature of theſe Inſtruments. Improvements moſt probably will be made in them; but there is little reaſon to doubt they will gradually find their way into every good Obſervatory. * * -- - . . . . E N ID O F P A R T I. FASCI CUL US ASTRO WOMICU. S. P A R T II. * C O N T A I N I N G, A N A C C O UNT OF A PORTA B L E A Z I MUTH ALT ITUDE AND TRANSIT CIRCLE: TO GE THE R W IT H S UN D R Y PR E CE PT S AND TA B L E S, WHICH IT IS IMAGINED MAY BE USEFUL TO PRACTICAL ASTRONOMERS, By F R A N C I S W O LL AS TO N, F. R. S. Printed by Luke Hanſard, Great Turnſtile, Lincoln’s-Inn Fields. PART II. B «Enteret at Štationers ball, * -- •w * *...* ; **. £- ºf *. ’2- FAS C1 cu LUs ASTR owo M I C J S. tº ~ mº ºsma- C H A P T E R VI. {} N A PORT A B L E A ZIM UT H A L T IT UD E A N D T R A N S IT- CIRCLE, M A DE for THE AUTHOR BY MR. TROUGHT ON: T O G E T H E R W IT H S O ME IN S T R U C T I O N S C O N C E R N- I N G T H E U S E O F I T. HIS Inſtrument is in ſome reſpects ſimilar to that conſtructed by Mr. Cary ; but differs in others, beſide being reduced in its dimen- fions, in order to render it portable, of lower price, and more general uſe. The former "was intended for the Meridian alone; this, to be uſed towards every quarter of the heavens: and therefore, beſide deſcribing true Verticals, and giving truly the Zenith Diſtances and Altitudes, this was required to turn truly in Azimuth too, and give the Horizontal An- gles with equal truth, as nearly as the ſize of ſuch an Inſtrument would permit. The Circles are only of 12 inches diameter, and the diviſions made by the engine. The Teleſcope is of 20 inches focal length, and magnifies about 35 or 40 times. * &/ It carries five perpendicular wires in its focus, at the diſtance of 8'45" aſunder (=35" of time at the Equator) adjuſtable horizontally by two ſquare-headed drawing ſcrews. It has alſo five horizontal wires, at the diſtance of 7' 30" aſunder, which are not adjuſtable. - B 2 * To w - º f 3: ... 4. * Account of a portable Azimuth [Ch.A.P. VI. To the Teleſcope itſelf, and in the line of its direétion, is firmly ſcrewed a very ſenfible ground level, filled with purified aether; with an ivory ſcale extending its whole length, and divided to every 2" of a degree. The mi- nutes are about 4 of an inch in length, and numbered from the céntre each way. This is once for all adjuſted as near as may be to paralleliſm with the axis of viſion by the maker; and whatever error there may be found will be almoſt conſtant, and allowance to be made for it in the Altitudes or Zenith Diſtances obſerved. • In the direétion of the tranſverſe axis is another ground level filled with ather, and of equal ſenſibility with the former, and fimilar ſcale; with the diviſions reckoned from its centre. It hangs by means of two angular notches as inverted Y's at its ends, on two round pivots, projećting from cocks faſtened tight to each end of the cones of the axis. This level paſ- ſing through the vertical circle remains always in its place, excepting on a journey ; and, by a little eccentricity of the ſupports at its ends, keeps its face upwards in every poſition of the Teleſcope. The pivots on which it hangs, and between which it is eaſily reverſed, have an adjuſtment by two pair of capſtan-headed drawing-ſcrews, lying at right angles to each other, to bring the level itſelf to be exactly parallel to the axis. The vertical circle has a clamp and adjuſting ſcrew for ſetting the Tele- ſcope to any altitude, and moving it gradually to biſect a ſtar. The bottom plate has alſo a clamp and adjuſting ſcrew, for moving it in azimuth. But beſide that, it has two other clamps, for fixing the whole Inſtrument when it is once adjuſted to a mark: the truſting to a tangent- ſcrew, being in my opinion by no means ſafe for any length of time, or upon any alteration of the temperature in the air. This in general is the form of the Inſtrument. The handling of it, as indeed of all good inſtruments, ought to be delicate : and theſe levels will + *r -* inſtantly ſhew it, if that be not obſerved. * . º: & Such an Inſtrument ſpeaks itſelf manifeſtly to be intended not for an Obſervatory, but for common uſe. The following inſtructions ſhould there- fore be conſidered as addreſſed, not to profeſſed Aſtronomers, but to Prac- * titioners, CHAP. VI.] Altitude and Tranſit Circle. 5 titioners, to Sea-faring Men, to Travellers, who having had ſome experi- ence in the handling of inſtruments, and having a turn towards ſcience, may wiſh to aſcertain their Time, as well as the Longitude and Latitude of any place at which they may ſtop but for a few days; or to form a ſet of triangles for beginning a map of the country around them. With that view, the ſtudy has been to reduce this Inſtrument to as ſmall a fize as would admit of ſufficient preciſion; that it might not be ſubjećt to alterations or injury by carriage. All the uſual adjuſtments are therefore excluded, where an error can be aſcertained. Some allowance being commonly found neceſſary with the very beſt of inſtruments, and after the moſt careful adjuſtment, it was confidered, that by having no power of ad- juſtment at all, it would be leaſt liable to depart, in that particular, from ſome almoſt conſtant error. The Packing-caſe, for the lower part or azimuth circle, is ſo formed, as to ſerve for a ſort of ſtand upon which to place the Inſtrument when in uſe, if you have not another. This ſhould be ſet on as level and as firm ground as you can find, and it may be moſt convenient to place two of the feet to lie nearly Eaſt and Weſt ; the other foot will then be in the Meridian, and may beſt be turned towards the South. Put the Inſtrument upon it, with its feet nearly over thoſe of the ſtand; placing that which is neareſt to 180° on the Azimuth Circle towards the South. Having ſet the Azimuth Circle and Frame of the Inſtrument in its place, unpack the Vertical Circle with the Teleſcope, and lay its pivots gently in their Y s. Hang on the Axis Level, and obſerve where its bubble reſts when the Horizontal Axis is in the direction nearly Eaſt and Weſt. Turn the Inſtrument 180° in Azimuth, and obſerve the bubble again. By means of the ſcrews in thoſe two feet which lie in the ſame direction, bring the air-bubble in that level to ſtand at the ſame point or diviſion (it matters not at firſt what point that is) in each poſition. This being done, turn your Inſtrument 90° ; ſo as for the Axis to lie North and South ; and, by the foot-ſcrew towards the South, bring the bubble to the ſame diviſion at which it ſtood in a mean between the two former trials E. and W. Your Central 6 Account of a portable Azimuth [CHAP. VI. . *, º, * tº #4 Central Cone will now be nearly perpendictihar; and on another trial each way you may bring it to be truly ſo. -- It may be proper now to adjuſt the Horizontal Axis, ſo as toºlie truly at a right angle in reſpect of the Perpendicular Cone. Sºhis is done by re-', verfing that Axis in its Ys; and bringing the bubble to ſtand at the ſame diviſion in either poſition, by means of the ſcrew under one of the Ys... This, if your Hnſtrument is not deranged by its journey, will be with the two ends of the bubble at equal diſtances from the centre of the level, as marked on its ſcale. & But it is poſſible that your Level may be gotten a little out of paralleliſm to the centre of motion in the Horizontal Axis. This will ſhew itſelf, by turning the Teleſcope vertically. If all be right, the bubble will continue ſtationary during a whole revolution. If it does not, the error may lie either way. Try one firſt. Bring the Level to be alternately above the Horizontal Axis and below it. Obſerve the difference of the ſame end of the bubble; and by means of that pair of capſtan-headed ſcrews which then ſtand perpendicularly over each other, halve that difference. (N. B. Theſe ſcrews are drawing ſcrews, as are all the ſcrews in this Inſtrument; and therefore one muſt be releaſed, before its oppoſite can be made to ačt.) This being done, bring the Level to be before the Axis, and ſee whether the bubble keeps to the mean point to which you had adjuſted it in the other ſituation. If it does, you will probably find it keep to the ſame when turned ſo as to be behind. If it does not, you muſt proceed with reſpect to this juſt as you did with the other : and by the other pair of capſtan-headed ſcrews, which will now ſtand in a perpendicular direction over each other, you muſt halve the difference here found. Now try a whole revolution; and if you have not quite ſucceeded at the firſt, you will arrive at the truth by repeating the proceſs. This adjuſtment, when it is once ſettled, is not apt to diſplace itſelf by the uſing of the Inſtrument, nor indeed very readily by carriage. º It may now be proper, by reverfing the Level itſelf on its pivots, to try whether its ſcale be true ; that is, whether the reckoning of the diviſions each way be truly from the middle of its curvature. Yet if that be rightly made at firſt, it is not apt to vary. r—& 4. Having CHAP, wº.] Alºude and Tranſit Circle. 7 Having thus adjuſted your Axis-Level, it may be adviſeable to re- examine it in every particular before you depend upon it for real uſe. The next requiſite is, to examine the collimation of your Teleſcope in reſpect of Azimuth or R. Aſcenſion, by directing it to ſome well-defined and pretty diſtant mark; and after clamping the Inſtrument in that Azi- muth, trying whether the centre wire biſects the ſame mark after reverfing the Axis in its Ys. If it does not, the difference being halved, by means of . the ſcrews on each ſide at the eye-end of the Teleſcope, which adjuſt the wires within, will ſet the collimation right in that reſpect ; that is, it will bring the axis of viſion or line of fight in the Teleſcope, to be exactly at a right angle to the Horizontal Axis. Your Enftrument is now adjuſted for R. Aſcenſions, and capable of being uſed as a T.ranſit Teleſcope. What remains is to adjuſt for reading off your Obſervations as to Zen. Diſtances or Altitudes. To this end it will be adviſeable in the firſt place, to examine whether your Microſcopes are rightly placed in reſpect of the exact diſtance of each from the face of the Circle, ſo as to be free from Parallax. By Parallax is meant, an apparent dancing of the dots or di- viſions on the limb of the circle in reſpect of the wires in the Microſcopes, on moving your head ſideways while you are looking at them. It ſhould be remembered, that the Diſtinčimeſ of the image depends upon the ſlid- ing of the eye-tube to adjuſt it to the obſerver's eye : and if the wires be firſt made to be ſeen diſtinétly, the diviſions on the circle will be ſo too, when the Microſcopes are ſet at their proper diſtance. But the freedom from parallax depends upon the whole Microſcope being at the preciſe diſtance which it ought to be from the limb ; ſo as for the image formed within the Microſcope to coincide very exačtly with the plane of its wires. If there be any parallax, obſerve whether the image of a dot appear by its motion to be nearer to the eye than the wires, or beyond them. In the firſt caſe, the Microſcope is too near to the limb, and muſt be drawn from it by means of the large collar-ſcrews which fix it in its ring : firſt releaſing that neareſt to the circle, and then ſcrewing up that next to the eye till the parallax ceaſes; after which the firſt muſt be tightened too. But if the contrary be the caſe, the adjuſtment muſt of courſe be the re- verſe. 8 Account of a portable Azimuth ... [CHAP. VI. verſe. The Micrometers having been adjuſted by the maker, and fixed ſo, as for five revolutions of the Micrometer-ſcrew to coincide exactly with the ſpace of Io' on the limb, there never need be any alteration made in that reſpect; becauſe the freeing of the Microſcopes from parallax will of itſelf bring them back again to ſhew the true angle. To this particular, as alſo to the ſetting of the objećt-glaſs to the exact diſtance from the wires in the Teleſcope itſelf, Mr. Troughton is very attentive. This being done with care, you have now only to adjuſt the wires in your Microſcopes. For this purpoſe, bring the Teleſcope to an horizontal poſition with its level above ; and, clamping the circle there, move it very gradually by means of the adjuſting ſcrew, till both ends of the bubble in that level, ſtand at the ſame diviſion on its ſcale. Obſerve whether the fixed wire in each Microſcope now biſe&ts its reſpective dot (i. e. the dot near to the + or mark of no diviſion) on the limb of the circle : and if it does not, bring the wire to it, by means of the ſmall ſcrew-head over that part of the Microſcope. Then cover that wire by the other (or moveable one, for meaſuring the minutes and ſeconds of diſtance from it) and when theſe two wires appear to the eye as one, turn the Micrometer- head ſo as for the lozenge or beginning of diviſions to coincide with the mark or edge of its index. Thus will the Inſtrument be prepared for uſe. For though nothing has been ſaid concerning the Azimuth Circle, it was, becauſe that needs no direction. Its verniers having been adjuſted once for all by the maker, are not liable to be deranged; and the manner of reading them is ſuppoſed to be well known. The little frićtion that is heard upon turning the Inſtru- ment, ariſes from a very ſlight preſſure of the verniers on the circle under- neath, by a tender ſpring, merely to keep them cloſe to it; and though at firſt alarming, it may be confidered as of no conſequence. -- In reſpect of the adjuſtments, it is imagined that nothing farther need be added. Every one muſt readily underſtand that on reverſing an inſtru- ment, or any part of an inſtrument, whatever difference be diſcerned is double the real error; and that only half of that difference, or a mean be- tween the two obſervations, is the correction required. This holds good univerſally. If the collimation of the Teleſcope in R. Aſcenſion be found to CHAP. VI.] Altitude and Tranſit Circle, 9 to err, an adjuſtment of half the difference by the adjuſting of the wires will bring it to the truth: after which, the other half being corrected by: turning the whole Teleſcope in Azimuth, and pointing it again to the mark, on a ſecond reverſing, the error in collimation will be found to ceaſe. The ſame it is in reſpect of all Levels. Half the difference diſcovered in them upon reverſing, is the allowance to be made, or to be corrected, to aſcertain the truth. And indeed the ſame it is in the Obſervations them- ſelves. The exact place of the centre of your Inſtrument may be aſcertained, by opening the holes in the top and bottom of your packing-caſe or ſtand, and paſſing the hook for the plummet through the central cone of the Inſtru- ment, and hanging on the plummet, letting it ſink towards the mark you have previouſly placed in the ground. Then, after faſtening the line by the milled-headed ſcrew cloſe to the notch over the cone, intended to re- ceive it, by ſliding the whole Inſtrument on its feet on the top of the ſtand, you may bring the point of the plummet exactly over the mark; and leav- ing it hanging, you will ſee whether the Inſtrument be removed by hand- ling, or any other cauſe. The balls on which the feet reſt, are ſo formed as not to be inclined to move without ſome ſmall degree of force. It is very poſſible, that to ſome readers the foregoing inſtrućtions may have appeared ſuperfluous; and others may wiſh that ſome things had been more minutely deſcribed. But every one ought to be acquainted with the firſt principles and mechaniſm of inſtruments, who undertakes to make any uſe of one of this kind; and to ſuch perſons, theſe dire&tions it was ima- gined muſt be very fully ſufficient. PART II, > C. * s sº , - * A S g • 3. * > à. 3-4 * * * ſ’ s 2 * * * >3. *. % * # 3 º gº ; : ~ c H A PTER VII. oN some PEculi AR ADv ANTAGES of THE Azimuth ALTITUDE AND TRANSIT CIRCLE. & I AVING in the preceding Chapter deſcribed the manner of ad- juſting this Inſtrument, it may now be proper to mention ſome of the uſes to which it was intended peculiarly to be adapted. The Inſtrument being portable, and capable of being uſed in any place where it may be ſet on a firm baſis ; and deſcribing true verticals and hori- zontals, with clamps and adjuſting ſcrews whereby to fix it in each poſition, and circles whereon to read the angle made by the axis of viſion in the Teleſcope, from any given point either of Altitude or Azimuth; ſpeaks itſelf to be fitted to a very great variety of purpoſes, which need not be pointed out to the intelligent, and which daily experience will diſcover. But there are ſome, which perhaps it may not be without its uſe to ſe- lećt, for the confideration and inſtrućtion of the inexperienced. And fince there was in the contemplation of the Author, when he gave direc- tions for this Inſtrument, one purpoſe to which it ſeems almoſt exclu- fively adapted, that ſhall be ſtated firſt ; though it is by no means the principal one, and on the contrary is one that it is very poſſible may be ſuperſeded by other and better methods of arriving at the ſame concluſion. The idea was, by correſponding Azimuths, obſerved at the ſame time with a ſet of correſponding Altitudes, to deduce an exact Meridian to which to point the Teleſcope as a Tranſit Inſtrument, while from the Al- titudes you deduce the exact time of the day for aſcertaining the error of your Chronometer. How far this method may be found convenient, expe- rience * & Chapº"WH ..] Advantages of the Az, alt, and T.'ram/ſt Circle. I I rience muſt decide: but in principle, and from the trials hitherto made, it ſeems to deſerve confideration. *To explain the powers of ſuch an Inſtrument, it may perhaps be beſt to ſuppoſe a caſe where every thing is to be ſought. Let us imagine an Obſerver caſt upon an unknown ſhore, with no other aſtronomical inſtrument: having indeed a Chronometer; but we will ſuppoſe that to be gone down : and having likewiſe a Nautical Almanac, and the neceſſary Tables for Calculation. We will confider him as know- ing neither the Longitude nor the Latitude of the place, nor the Hour of the day, within 15 or 20 degrees either way. The tracing of things thus from the beginning, will beſt explain what may be done by an Inſtrument of this ſort; any part of which proceſs may be omitted, according to the data he may have on which to work. Let him firſt drive a ſmall ſtake into the ground, or make any other mark in the pavement or floor, whereby to aſcertain the ſpot over which he means to place his Inſtrument. Let him alſo provide ſome ſcreen or ſhade to keep off the Sun's rays when he is not in actual obſervation : for the levels are ſo ſenſible, that any ſhining of the Sun unequally upon the Inſtrument, will immediately be detected by them ; and he will never fatisfy himſelf with the adjuſtments. Were the levels leſs ſenfible he might not perceive the difference ; but that difference would really exiſt, whether he could diſcern it or not. Let him next ſet his ſtand over the mark, and the Inſtrument upon it, as deſcribed already; and let him adjuſt it in every particular as truly as he Căile Let him alſo wind up his Chronometer, and ſet that to the ſuppoſed time of day. In the morning, two, three, or more hours before noon, let him point the Teleſcope toward the Sun, and a little above it; and, clamping the vertical circle, let him follow the Sun till its upper limb juſt touches the . . . . . . * C 2. * firſt * * * t2 Peculiar Advantages of the Aximuth [CHAP, Vlf. firſt horizontal wire. Then, noting down the exact ſecond of time, as ſhewn by his Chronometer, when that happened, let him follow the Sun again. till its upper limb juſt arrives at the ſecond horizontal wire. After ſetting: that down as before, let him prepare for the third or central wire; by now clamping the Inſtrument in Azimuth likewiſe, and holding its adjuſting ſcrew between his finger and thumb, let him bring the preceding limb of the Sun juſt to touch the third or central perpendicular wire, at the ſame inſtant that the upper limb juſt touches the third or central horizontal one. Noting that inſtant, and ſetting it down, let him now read off the Azimuth marked on the Azimuth Circle, and ſet it down under the other; and then prepare for making the preceding limb to touch the fourth perpendicular wire, at the ſame inſtant that the upper limb arrives at the fourth hori- zontal one ; ſetting that time down again, and reading off the Azimuth again, and ſetting it down, let him do the ſame by the fifth wire each way, and record them as before. * y. He will now find the lower limb of the Sun, and its ſecond or following limb, ready for obſerving in the ſame way at the firſt, ſecond, and third wires : making each perpendicular wire a tangent to the Sun's laſt limb, at the inſtant that its lower limb juſt leaves the correſpondent horizontal wire ; and ſetting down the time, and after reading off the Azimuth, ſet- ting that down too under the other. After theſe, the Inſtrument may be releaſed in Azimuth, and the lower limb alone be obſerved, as it quits the fourth and fifth horizontal wires reſpectively. As ſoon as the Sun has thus paſſed all his wires, he ſhould read off at both the Microſcopes the Zenith Diſtance and Altitude at which he had clamped the vertical circle; and, if he has a Barometer and Thermometer, he ſhould ſet down their ſtation at the ſame time: for, though he probably, will have no occaſion to regard the preciſe Altitude at which he made theſe obſervations, yet, if anything ſhould deprive him of the correſpondent ones, he may wiſh to have it in his power to deduce his time or his Azi- muth from theſe : and the reading off the Microſcopes after all is over is attended with very little trouble. * Theſe things at firſt will appear hurrying; and till a perſon becomes a little accuſtomed to it they certainly will be ſo. But after a little practice, # there Citap. V.H.] Altitude and Tranſit Circle. I3 there will be: found time enough to go through the whole with eaſe; for the vertical circle remains clamped the whole time; and all the fix Azi- muths lie much within the limits of their adjuſting ſcrew. The eaſieſt method of keeping ſo many obſervations from confuſion is, to have a ſlate, or a ſheet of paper, ready ruled into five columns, to cor- reſpond with the five wires in the Teleſcope, as they occur in ſucceſſion, in which to write down the obſervation belonging to each wire, whe- ther that be Time or Azimuth. For if any cloud or accident ſhould de- prive him of any one or more of his obſervations, he will then at once ſee afterwards which of them is miſſing, when he comes to compare the two ſets together. Leaving the Inſtrument clamped for Altitude, and ſcreened entirely from the Sun's rays, he muſt wait till it is at the ſame diſtance from noon in the evening to reſume his taſk. For that, he muſt hold himſelf ready againſt the time comes; and, previous to it, he will do well to re-examine the adjuſtment of his Inſtrument, to be certain that no change has hap- pened in the ſtand or the central cone, ſo as to throw its axis out of a per- pendicular. Let him then obſerve the ſame method in this ſecond ſet of obſervations as he did in thoſe of the forenoon; conſidering thoſe wires as firſt, at which the Sun's limbs touch firſt; and ſetting down the times of their appulſe to each reſpective horizontal wire, and bringing the preced- ing or ſubſequent limb to the correſponding perpendicular one, and reading off the Azimuths juſt as he did before. When all are paſſed, he may releaſe all the clamps, and replacing his ſhade, leave the Inſtrument till he has reduced his obſervations. Of correſponding Altitudes, if he has obſerved them all, he will have obtained ten pair; and of Azimuths ſix pair; which he muſt now ſelect from each other. ^. In reſpect of correſponding Altitudes, the pračtice is ſo common, and the method of deducing the time from them is ſo well known, that no- thing need be ſaid on that head. Indeed, if a perſon wiſh for inſtruction in T4. ^ Peculiar Advantages of the Azimuth [CHAP. VII. in that, he may find it in the late Mr. Wales's Tračt on the Method: of finding the Longitude at Sea by Time-keepers; which contains new tables of equations for equal Altitudes, and precepts for the uſe of them : a valuable treatiſe, which may be had at a ſmall expenſe, and ought to be in the hands of every one who pays attention to theſe ſubječts. But the idea of obſerving correſponding Azimuths being perhaps new, or at leaſt not very common, and ſeemingly peculiar to this Inſtrument, it may call for a little explanation how to reduce them: and a very little will ſuffice. V N They muſt be oppoſed to each other in pairs, juſt in the ſame manner as correſponding Altitudes; the firſt in the morning to the laſt in the evening, and ſo of the reſt. Then, deduéting the one from the other, and applying half the difference between the two to the ſmalleſt number in each pair, it will give a number of degrees, minutes, and ſeconds, in which, if all the obſervations were perfect, the whole ſix pair would coincide; and, if they do not, the fair mean deduced from among them will approach nearly to the truth, i. e. the error of 180° on the Azimuth circle from the true Meridian. To that mean point, deduced from theſe obſervations, the Inſtrument muſt now be turned ; and fixed there till the proper correction can be applied to. it. Upon the Teleſcope being turned down to the Horizon each way, it may be obſerved what diſtinét objećt there may be either to the North or South that coincides with one of the perpendicular wires; or if no ſuch obječt ſhould occur, a mark may be placed each way, or either way, to which to keep the Inſtrument, till the correction can be inveſtigated, which is requiſite on account of the change of the Sun's declination during the in- terval between the morning and evening obſervations: for any alteration, in his declination will affect the Azimuth deduced in this way, as it does. the Hour; and neither of thoſe correótions can be aſcertained till the Lati- tude of the ſtation be known. Yet may the Latitude be now deduced, with fully ſufficient accuracy for that purpoſe, by obſerving the paſſage of any one known ſtar over the Me- I. * ridian, taar, VII.] . Altitude and Tranſit Circle. 15 sidian, and reading of its Altitude and Zenith Diſtance. The Pole Star, or any ſtar of the firſt or ſecond magnitude, will be found viſible in the day-time with the Teleſcope of this Inſtrument; and the Latitude being, though roughly, deduced from it, the correction for Time may be ſought in the uſual way. That required for Azimuth may as eaſily be inveſtigated by a very fimple formula, which the late Mr. Wales conſtrućted for this pur- poſe at my requeſt, which will be found in the Appendix, N° 7. Having calculated the neceſſary correction, you may then apply it to the Azimuth before deduced, from a mean of the obſervations; and ſhift the Inſtrument juſt that quantity as ſhewn on the Azimuth Circle. Then clamping it firmly there with both of the ſide clamps, you may truſt to its remaining in that poſition as far as the Inſtrument itſelf is concerned; for when once thoſe clamps are ſet, the tangent-ſcrew for adjuſtment has no power over it. Thus it becomes, to all intents and purpoſes, ſo far as its ſituation and ſize permit, a Tranſit Circle; placed very nearly, if not quite truly, in the Me- ridian, from one day's obſervations alone; and ready for making ſome obſervations in that firſt evening. The Chronometer having been let go down, may have altered its rate, which as yet will be uncertain; though if the watch be good, that rate will not be unſteady. Its error at noon was known from the correſponding Al- titudes ; and any obſervations of the evening may afterwards be reduced to the real time, when the rate becomes known. The paſſage of ſtars over the Meridian even in this firſt evening will therefore be valuable; and if the Moon ſhould be among the number, an obſervation of her paſſage, and a compariſon of it with that of a ſtar nearly of the ſame Declination, will already give great infight into the Longitude of the ſtation. The error of the Inſtrument in collimation of Altitude muſt be known, before the exact Latitude can be aſcertained; but as that error is not apt to vary even by carriage, the Latitude may be confided in, within Io", from the obſerva- tions of the ſame evening. By repeating the ſame proceſs, either in whole or in part, as he may judge neceſſary, the next day, he will verify his Meridian, or bring it ſtill more Il Gät 16 Peculiar Advantages of the Azimuth [CHAP. VII. near to the truth. He will obtain the rate of his Time-keeper; and begin to feel a degree of confidence. For when once he has a mark in the Meridian to which to re-adjuſt his Teleſcope, he may, if he finds occaſion, releaſe the Inſtrument, and turn it in any direction for other obſervations, knowing that he can replace it at pleaſure. Yet muſt it be ſaid, that in all Inſtruments, the leſs they are moved out of any poſition, and their adjuſtments diſturbed, the better they will always perform what is expected from them. But correſponding Azimuths are far from being the only method of find- ing a Meridian by this Inſtrument. As from an Altitude of the Sun's limb obſerved with care, the time of day and error of a Chronometer may be deduced, and a mean of two or three Altitudes ſo deduced, will come very near the truth: ſo from an Azimuth of the Sun's limb, obſerved at any inſtant by that Chronometer, and read'd off on the Azimuth Circle, the error of that Azimuth Circle in poſition may by a ſimilar proceſs be de- duced; and a mean of two or three ſuch obſervations, will give that error very nearly right. To the Altitude ſo found the Sun's ſemidiameter muſt be applied, to reduce the obſervation to the centre, and the Altitude ob- ſerved muſt be correóted by the Refračtion and, Parallax. And to the Azi- muth, the ſemidiameter muſt likewiſe be applied, corrected by the co-fine of the Altitude, to reduce it to the Horizon. Theſe are neither of them uncommon; but for each of them a formula. will be found in the Appendix, N° 8. 9. *- That the ſame may be done by a known ſtar, ſcarcely need be ſaid; though ſome more calculation will be requiſite to deduce theſe from the obſervations of a ſtar, than by the ſun whoſe poſition is given daily in the Ephemeris. Another method there is, which has not often been pračtiſed, though, it was found very convenient to General Roy in his trigonometrical meaſure- ments; the calculating of the exact time and diſtance of the Pole Star from. the Meridian, when it is at its greateſt elongation Eaſt or Weſt; and by adjuſting the Inſtrument to it at that time, reading off the Azimuth, on its. : $. * . . ** tº º * * * CHAP. VII.] Altitude and Tranſit Circle. 17 its circle. After this, correcting the diſtance of the ſtar from the Pole by the co-fine of the Latitude of the ſtation, you will have the true Azimuth of the ſtar; the difference of which from the Azimuth obſerved on your circle, will give you the deviation of it from the true Meridian. This does not require the time to be known or attended to with very great preciſion; becauſe the motion of the ſtar in Azimuth is very ſlow indeed. And fince it comes both to the Eaſt and Weſt of the Meridian in the ſpace of every twelve hours, two opportunities of this kind offer every day. An inſtance of this method will alſo be found in the Appendix, N° Io. Another method, where you have the time ſufficiently correót, is, to cal- culate the meridian paſſage of the Pole ſtar above or below the Pole. This occurs juſt fix hours after the other; when, pointing the Teleſcope of the Inſtrument to the Star, and following it in its ſlow motion, covered or bi- ſečted by the meridian wire, till the exačt inſtant it is to come on the Meri- dian, then clamping the Inſtrument there, it will be found very nearly in the Meridian indeed, If all the adjuſtments of your Inſtrument are right, you will probably find it err but a few tenths of a ſecond of time in reſpect of ſtars obſerved afterwards within the Tropics. This calculation of the Pole Star will be found among the Tables in the Appendix, Part I. Nº VI. Theſe are methods of finding a Meridian which ſeem beſt to be recom- mended with ſuch an Inſtrument; which, deſcribing true verticals and horizontals, and giving the angles of elevation in the one and Azimuths in the other, has all the requiſites for ſuch a purpoſe: and is itſelf a Tranſit Inſtrument encompaſſed by a circle, or a ſmall portable Tranſit Circle, ready for meridional obſervations as ſoon as its true poſition is aſcertained. For the verifying of this poſition, or bringing it ſtrićtly to the truth, two methods may next be recommended: the one by the meridian obſervation of any circumpolar ſtar above and below the Pole; the other by the obſer- vation of two well-known ſtars over the Meridian which differ confiderably from each other in elevation, and obſerving how far the times of their paſſage differ reſpectively from the exačt time of each by ſtrićt calculation. If in the former caſe of a circumpolar ſtar, the time of its paſſage from the upper to the lower Meridian differs at all from the time of its paſſage PART II. D from 18 Peculiar Advantages ºf the 4ximuth {CHAP. Wif. from the lower to the upper, the Teleſcope differs from the truth; the quantity of which may readily be aſcertained by a formula, which ſhall be given in the Appendix, N° 12. ; after which it will be very eaſy, by ‘means of the Azimuth Circle, to ſhift your Inſtrument juſt that quantity by which it deviated. If by the other method, of two or more ſtars, you find it to err; the exact quantity of that deviation may likewife be inveſtigated by another formula, to be found in the Appendix, N° 13. ; and your Meridian may be adjuſted. accordingly. *. St Thus, in ſuch an Inſtrument, you have a portable Tranſit Circle, eaſily fet up in any place; which has in itſelf the powers requiſite for finding a Meridian, and being kept ſtrićtly to it afterwards. It is capable of inveſti- gating the time to great accuracy at firſt, and when found of keeping it. By meridian obſervations you may ſoon aſcertain the rate of your Chrono- meter. On the vertical circle you may read off the Zen. Diſt. of any objećt to every 2"; from which the Latitude is to be deduced with preciſion. And by attentively obſerving the meridian paſſages of the Moon, and com- paring them with her paſſage over the Meridian of Greenwich, or with the computed time of ſuch paſſage from the Tables, the Longitude of the ſtation is to be deduced with a preciſion not to be expected in any other way. This laſt was indeed one of the peculiar advantages firſt propoſed by this Inſtrument, which appeared to the Author as the beſt form for a portable Tranfit Inſtrument. The eclipſes of Jupiter's ſatellites, even at land, give the Longitude but in an uncertain way, their diſappearance and re-appearance being gradual. The different powers of the inſtruments uſed, the different ſtate of the atmo- ſphere, and of the obſerver's eye, give riſe to no inconfiderable differences in the times obſerved. Add to this, that notwithſtanding all the care of the aſtronomers of the preſent age, the calculated time of an eclipſe. does not always agree with the truth; and comparative obſervations are rare; fince what happens in the evening on one fide of the Globe, muſt occur in the day-time on the other. $ But CHAE. VII.] Altitude and Tranſit Circle. 19 *... But in reſpect of our Moon, the caſe is different. Her motion is at leaſt as well known as thoſe of Jupiter. The paſſage of her enlightened limb over a meridian wire is nearly inſtantaneous; and viſible by day as well as by night; and vifible in every part of the Globe almoſt daily; and muſt happen within a certain ſpace of time of its paſſage at Greenwich, the pro- portions of which to her daily retardation is all that is required to give the Longitude of the ſtation. Such inveſtigation at ſea is more difficult; be- cauſe it is done by meaſurements of her enlightened limb from the fun or a ſtar; and the obſervations are more troubleſome, and the calculations more intricate, on account of the effects of refraction and parallax: yet are they daily found to be of very great importance indeed. But the obſervation of the Moon's paſſage over the Meridian at land, is very eaſy; and the proceſs of calculation ſimple; and on that conſideration it was, that it has been en- deavoured to reduce the form of an inſtrument adapted to that purpoſe, ſo as to be fit for carriage and not too expenſive, nor beyond the ſkill of the traveller, that it might become familiar and in common uſe. How far it may prove ſo, time muſt decide; but in order to render it eaſy, the method of deducing the Longitude from ſuch obſervations will be found in the Appendix, N° 14. One more remark it may be proper to add, concerning an inſtrument formed on this principle; that the Teleſcope moving in true verticals and horizontals, and giving with ſome degree of accuracy its ſituation in each, the place of a comet, or any other occaſional appearance, may be aſcertained though it be not in the Meridian; fince, from the Altitude and Azimuth, and Time obſerved, the RA and Polar Diſtance of the object may, without much difficulty, be deduced in the manner pointed out in the Appendix; Nº. 17. .** - *; M. J. {- .* < * Sł. 4’ g “va º Aº º …” , i. w *# 3- 3. & A. 3 * * *** * * * *. 2: 1 º, Cºr - - --- * * A P P E N D 1 x. PART I. Con TAINING TABLEs, &c. BY WHICH THE OBSERVATIONS IN THE FIRST PART WERE DEDUCED. I. HAT which claims a decided preference before all others, is: a Catalogue of 36 principal Stars viſible in the Northern Hemi- ſphere, deduced from the obſervations of Dr. Maſkelyne. - The Right Aſcenſions are derived carefully from the new Catalogue for 1790, given by Dr. Maſkelyne himſelf to the Author, for publication in his General Aſtronomical Catalogue for that year; but now brought up to Jan. o. 18oo. The Annual Praeceſſions in RA were calculated afreſh. The motions in the ſtars themſelves are exactly the ſame as in the former edition. The numbers in the 6th column compriſe the Annual Praeceſſions and Motions in RA combined together. The North Polar Diſtances are deduced from thoſe publiſhed by Dr. Maſkelyne for 1770; and brought up carefully to Jan. o. 1800, The An- nual Praeceſſions in NPD are ſuch as belong to their reſpective RA” for the preſent time. The Annual Motions in PD in the 9th column are only two; the only ones then aſcertained by Dr. Maſkelyne; who, being deprived of the uſe of Dr. Bradley’s papers, could not, in the firſt ten years of his own obſervations, be certain of the quantity of ſo minute a motion. Thoſe in the Ioth column, are ſuch as have been deduced by Dr. Hornſby from Dr. Bradley’s papers, which have been many years in his hands ;. the firſt volume of which is lately publiſhed. II. A Table. 22 Contents of the Tables. IAPPENDIx. II. A Table of the Corrections of RA in time for the ſtars in the pre- ceding Catalogue, to every tenth day of the year; copied exactly from Dr. Maſkelyne's, and printed by his permiſſion. This Table contains-the-ſum: of the Praeceſſion from the beginning of the year, Aberration, and ſolar inequality of Praeceſſion; together with an allowance for the motions of ſome of the ſtars, the quantity of which allowance to each ſtar will be found in this copy at the bottom of its reſpective column. To this Table, a column for o: Herculis has been added in its place by the Author. III. Is a Table of the Corre&tions of RA in time for the ſame ſtars, to every 1oth degree of Longitude of the Moon's Node ; compriſing the effect of Nutation and the Equation of the Equinoxes. IV. and V. are two fimilar Tables of the Correótions of NPD for the ſame ſtars. The firſt.compriſing the effects of Praeceſſion, Aberration, and ſolar Inequality, for every I oth day in the year. The ſecond, the effect of TNutation for every 10th degree of Long, of the Moon's Node. Theſe two neither of them contain any allowance for the motions in the ſtars themſelves ; which ſeemed not to be ſufficiently aſcertained at the time theſe Tables were conſtructed. VI. Is a Table of the mean RA and NPD of Polaris for Jan. o. 1800, and Io years following ; together with the Correótions both in , RA and NPD for every 1 oth day of the year, and every I oth degree of Long, of the Moon's Node. Theſe new Tables were calculated for the year 1800. Numbers IV. and V. will ſerve for many years before and after that epoch. Number VI. cannot long continue ſo correct; becauſe of the rapid annual increaſe of . Praeceſſion in RA and decreaſe in NPD in that ſtar. But if its mean RA be brought up carefully to the beginning of a year, the numbers in . the firſt part will ſcarcely err 1" at the utmoſt in, RA; nor thoſe in the column for NPD o',o 1; from the truth, if the Table be rightly conſtructed. Numbers VII. VIII. IX. and X. are copied from Dr. Maſkelyne; for finding the Annual Praeceſſion of a ſtar in RA and NPD, with their 3 & s reſpective e” : *wursink.j comeº y Me Wales. 23 reſpective multipſters. The only alteratiéh that has been made in theſe is in Number VII. and IX. where the Argument, the RA of the ſtar, is altered from the RA in degrees, &c. to RA in time; and a mean inter- polation has been introduced between the numbers given by the Aſtro- nomer Royal. XI. Contains a ſet of General Tables, computed by the Author on the plan of the foregoing; for deducing the apparent RA and NPD of any ſtar in any part of the heavens from its mean poſition ; or, vice verſa, by applying the numbers taken out of the Tables with a contrary fign, for deducing the mean poſition of any ſtar from its obſerved or apparent ...” fituation; viz. Tab. I. For finding the effečt of Aberration on a ſtar's RA in time, for every I oth day of the year, and each hour of the ſtar's RA. Tab. II. For finding the effect of Nutation on the ſtar's RA in time, for every I oth degree of Longitude of the Moon's Node, and each hour of the ſtar's RA. Tab. III. The Equations of the Equinoxes in RA in time, copied from Dr. Maſkelyne. Theſe all relate to the RA of the ſtar, and its neceſſary correótions. The following give the corre&tions for NPD : Tab. A. For finding the effeót of Aberration on the NPD of a ſtar, for every I oth day of the year, and each hour of the ſtar's RA. Tab. B. For finding the farther effect of Aberration, for every 1oth day, according to the Declination of the ſtar. Tab. C. For finding the ſemi-annual ſolar Equation in NPD, for every 1 oth day, and each hour of the ſtar's RA. Tab. D. ~3. ~~! *s- 24 * •; Contents of the Tables. . . . . . +AFFENBix.f. *: .* *. w" ~. *, º * Tab. D. For finding the effect of Nutation, on the NPD ºf the ſtar, for every 1oth degree of Long, of the Moon's Node, and each hour of the ſtar’s R.A. *º- * , . It is hoped theſe Tables will be found as convenient to the Pračical Aſtronomer as they have been to the Author, who compiled them merely . for his own uſe. He publiſhes them with diffidence; but flatters himſelf that they are not liable to many errors, at leaſt he does not feel conſcious of any which it was in his power to avoid. (I.) A CA. T A L O GUE of the MEAN RIGHT AscENsions and North 36 PR IN C I PAL STARS, Jan. o. 1800 : As deduced from the Obſervations of the Rev. NEv1 L MASK el Y NE, D. D. F. R. S. Polar DISTANCEs of and Aſtronomer Royal. } *...* |Mag. R.A. isco. tº An. Mot. "..." | N. P.D. 1862. tº An. Mor º + + dºmº h / // // // © / // // 'y Pegaſi - - - - 2 o. 2.66,79| 3,096 –o,oo8; 3,088 || 75.55.44,7| 20.04 || - - —o, 126 o, Arietis, 2* - -] 2.3 | 1.55.55,39| 3,336|+o,006| 3,342 || 67.29.20,8| 17.54 - - | +o,045 |o, Ceti - - - - - 2 2. 51.49,97| 3, 120 – O,OI I 3, Io9 || 86.42. O,9| 14.67 - - || –o,229 Aldebaran - - -] I 4. 24.27,29| 3,420 +o, ool | 3,421 || 73.54. 15,9| 8.14 - - +o,o 16 Capella - - - I 5. I-56, 16| 4,394|+o,019 4,413 || 44.13. Io,9| 5. I I - - | +o,321 Rigel - - - - - I 5. 4.55,54 2,876|-o,008 2,868 || 98.26.35,9| 4.76 - - || +o,249 |3 Tauri - - - -| 2 | 5. 13.39,38|| 3,776|| +o,oo2 3,778 || 61.34.31,0| 4.02 || - - +o, I 12 o: Orionis - - - -] I 5. 44.2O,57| 3,240|-O,Ooi 3,239 || 82.38.33,9| 1.39 - - | –c, 14o - + // Sirius - - - - -| 1 || 6. 36.19,91| 2,679 –o,032 2,647 || Io9.26.30,0| 3.14|+1,2 | + 1,125 Caſtor - - - - - 2 7. 21.48,81| 3,859; -o,007 3,852 || 57.41.20,o 7.02 - - —o, 123 Procyon - - - - 1.2 7. 28.49, Io 3, 192|-o,056| 3,136|| 84, 15.5o, I 7.62 - - || –o,946 |Pollux - - - - - 2 || 7-33. 3, 18| 3,738 -o,05o 3,688 || 61.30. 13,8; 7.91 - - |-|-o,143 o, Hydrae - - - -| 2 | 9. 17.44,97| 2,949|-O,OI 5| 2,934 || 97.47.54, 1| 15.2 I | - - | –o, 117 Regulus - - - -] I 9. 57.42,02, 3,224 –o,022 3,292 || 77. 3.40,4| 17.27 - - || –o, 156 9 Leonis - - - - 1.2 || 1. 38.50,49| 3, Ioz} -o,042, 3,060 || 74.18.33,1| 19.96 || - - |-|-o, 124 8 Virginis - - -| 3 || 1.40. 16,38|| 3,074|+o,048] 3,122 || 87. 6.22,3| 19.97 - - |-|-o, 154 Spica iſ: - - - - - I || 3. 14.40, II 3,144 -oxoof 3,138 || Ioo. 6.44,2| 19.o I - - | +o,096 Aréturus - - - - I 14. 6.32,21| 2,711 –o,088| 2,623 || 69.45. 14,6|| 17.09 |+ 2,01 + 1,919 & Librae, I - - - 6 14. 39.38,74 j & Librae, 2 - - -| 2 || 14- 39.49,97| 3,302|-o,oog! 3,293 || Io;. 1 1.59,6| 15.34 - - || –o,416 & Coronae - - - - 2.3 |15. 26.13,29| 2,526 +o,018, 2,544 || 62.36. Io,9| 12.49 - - |-|-o,090 o, Serpentis - - -| 2 |15. 34.25.2° 2,935|-Foooo 2,937 || 82.56. 9,2| 12.92 || - - || –o, 139 Antares - - - -] I | 16. 17. 9,69| 3,654 –o,oo8] 3,646 || 1 15.58.22,4| 3.73 || - - –o, 14% a. Herculis - - - 2.3 17. 5.31,76| 2,729 –o,Oo3| 2,726 4.8o 2 Ophiuchi - - -| 2 |17. 25.38,97 2,769|-oooo. 2,767 || 77.16.52,3| 3.12 || - - |-|-o,039 & Lyrae - - - - - I | 18. 3o. 9,89| 2,O II | +o,o 17| 2,028 || 51.23.49,9| 2.62 - - – O,396 y Aquilae - - - -| 3 |19. 36.44,59| 2,850 –O,OI 3| 2,837 || 79.51.49,7| 8, 17 | - - || –o,664 & Aquilae - - - - 1.2 19. 4 I. I,92 2,892|+o,027| 2,919 || 8 1.39. 1 1,7| 8.60 - - —O,563 9 Aquilae - - - - 3.4 |19. 45.28,97|2,943|-ooo; 2,938 || 84. 4.39,9| 8.89 - - |+o,335 « Capricorni, I -| 4 |20. 6.32,79| 3,333|-o,004 3,329 || Io.3, 6.59,6|| 10.54 o, Capricorni, 2 - 3 |20. 6.56,48|3,334 –o,oo2 3,332 || Io.3. 9.15,8| 10.70 |z Cygni - - - - 1.2 |2O. 34-36,68| 2,039 –o,oof 2,933 || 45.25.40,7| 12.5o - - –0,245 & Aquarii - - - -| 3 |2 I. 55.29,75|| 3,083 – O,OI7| 3,066 || 91.17. 6,7| 17. 16 - - — C, 153 |Fomalhaut - - - 1.2 |22. 46.23,69| 3,318|+o,01o 3,328 || 120.40.37,7| 19.03 || - - || –o.o.º. o, Pegaſi - - - -| 2 |22. 54.17,99| 2,972 - Oºoog 2,963 || 75.52. 3,3| 19.23 - - || –o, Io: o, Andromedae - -| 2 |23. 58. * 3,062|+o,oo5 3,067 || 62. o. 48,9| 20.04 || - - +o,087; | PART II. : ( 26 ) [Appen prx. *** (II.) C OR RECTION S of R. A. in Time of the STARS in the pr to every Tenth Day in the Year: -- —; {. Copied exaëly from Dr. Maskely ne's ; excepting a Herculis, which has been added. ^ -º-º-º: * * eceding Catalogue N. B. In this Table an allowance is made for the Motion of each Star as ſet down at the bottom of its column. V | y Pegaſ. |& Arietis. a Ceti. Aldebaran. Capella. | Rigel. 8 Tauri. & Orionis // // 2– // | // * // // // Jan. O. – o, I 9| +o,50 | +o,75|| + 1, 2 I ++,77| + 1,25 | + 1,44 || + 1,32 IO. O, 3O O,38 o,65 I I 5 1,76 I, 24 I,45 I,36 2O. O34. I O,25 O,55 1,07 1,69 I, I 8 I 34.2 1335 3O. O, 5o O3 II O34. I C,97 I 355 I SO9 I 334 J 229 Feb. 9. o,57] – O,O3 O, 2. O,83 I, 39 O,97 1,21 | I,2O I 9, - - O, 17 o, 13 o,69 1, 18 , o,8. I I SOS I,O7 Miar. I. - - O,28 —O,O I C352 Q,95 o,65 o,88 O293 I J , - - o,38 || - - O; 35 O,70 o,48 o,69 o,76 2 I, i - - || - - tº -> o, 19| o,46, o,31 o,51| O,59 3 I. - - º º gº tº o,06| o,24 C, I 4 O233 Ox43 Apr. Io. - - º ºr - - || – O,O 5 O3O4. O,OO o, 18 O,27 2O. i - - tº º tº ºn o, I 3 —O,O9| -o, I I - - O, I 5 3O. - - sº tº tº ºn O, I 7 O, 18 O, I 9| - - O,O5 May Io. - - tº sº. ºn tº o, 15 O,23 O324 - - –O,O I 2O. +o,49| - - gº - O, I I O32O O2 24 || - - O3O2 3O. O,79 - - º, tº O,OO O, I 3 O, I 9 - - O,OO June 9. I, O9 - - - - ) + O, I 5 || O,OO o,09| - - , +o,06 I 9. 1,41 +o,85 - - , o,33| +o,2O | +o,04 - - -O, I7. 29. I 373 1, 17 | +o,81 O,55 Ox45 O32O - - O33 P. July 9. 25C3 I 349 Isog o,8 i O,75 O34C - - O34-9 I9. 2333 1,82 J 239 1,08 I,08 o,63| - - O37C 29. 2,60 2, I 5 I,7 O I 337 I 344. o,87 º, O393 Aug. : 2,85 234.7 2, OO 1,67 1,82 I, I4 -H I,57 I, I 9 I 8. 3,06 2,76 2329 I 397 2, 22 I 34. I I,89 I,46 28. 3,23 3,O3 2257 2329 2,63 I,7O 2322 I 574. Sept. 7.| 3,37| 3,27| 2,83| 2,58] 3,04| 1998] 2,551 - 2,03 , I 7. 3,46 33.49 3507: 2,88 3344 2,27 2,89 2232 27. 3,52| 3,67| 3,29| 3, 16 3,84| 2,55| 3,21 2,61 Oćt. 7. 3,55 3,82 334-7 3243 4,23|. 2,81 3,53 2,90 17. 3,55 3,94 3,63| 3,67| 4,59| 3:07 3,83| 3, 18 27. 3, 5 I 4,02, 3,76; 3,90| 4,93| 333 I 4, II || 3:45 Nov. 6. 3,45' 4,07 || 3,86| 4,09| 5,31 || 3:52 4,37| 3,7C 16. 3537 43C9 33.93 4; 27 5×52. 3,71 4,61 3,93 - 26. 3,28 4,08 || 3,97 4,41 5,75l 3,87| 4,82 4, 13 Dec. 6. 3, 18| 4,05 ! 3,99| 4,51 5,94| 3,99| 5,00| 4,31 16. 3,07| 3,97 3,96' 4,57| 6,07| 4,03, 5, 13| 4,45 26. 23.95 3,89 329 I 4,61 6, 14 4, I 3 552. I 4355 3 I. 2,89 3,83 3,89 4,61 6, 16 4, 13 5,23| 4,58| * | ºr --~~ ~ wº: } 7- 3- —T CORRECTIONS of R. A. in Time to every Tenth Day—continued. : §§ºx. ſ * * * Sirius. ' | Caſtor. Procyon. | Pollux. a Hydrae. Regulus. | 8 Leonis. |8 Virginis. : a // // // // // Z/ // Jani e 4-1,41 | + 1,59 + 1,33 + 1,51 | + 1,07 | +o,92 || +o,39 |+o,39 Iöğ 1,47 I 374 1347 1,67 I 329 I, I 9 O,72 c,7O 2O. 1948 1,83 I, 55 I,77 I 247 I 3 4. I 130 I o,98 3O. 1,45 I,86 I, 58 I,8. I I, 5.9 H 259 I, 27 I, 2 3 | Feb. 9. 1,37 I,84 I 355 I,79 1,64 | 1,7 I I 350 I 345 I9. 1,24 1,77 I 350 I 274. I,7 I 1,79 I,64 1,62 Mar. I, I, O9 1,65 1,40 | 1,63 I,7O 1,83 1,81 I 575 I 1. C.92 I 349 I 327 I 349 1,65 I,82 139 I I,85 2 I. O,74 I, 3 I I 3 l 2 I 232 1,56 1,77 I 395 I,89 31. o,56 I 3 I 3 o,96 I, T 5 I,45 I,69 I 397 I 39 I Apr. Io. o,38 O,93 o,8O o,96 I 532 I 359 I 295 I,89 2C). O; 22 O,75 o,65 O,79 I, I 9 1,48 J390 I,85 3O O,o8 O,59 O, 5 I o,63 I, O5 I 234. I,83 I,79 May Io. —o,04 o,46 O, 39 O,50 Ox9 I # 322 I 274 I,72 2O O, I 3 o,36 O,3O C24.O O,79 I, IO I,64 I,67 3O. O, I7 O23 O C,25 O233 C,69 O,99 I 353 I 35.3 June 9. o, 17 o,28 C222 O23O G,58 O,9C I 243 I 344 I9- C, 13 O,3O, O, 23 C), 32 tº gº O,82 I 233 I 3.34. 29. O,O6 O337 O,28 Os37 & ºn o,76 I 323 July 9. +o,05 o,48 O,35 o,46 - - o,72 I 3 I 4. I 9. O;2 I o,64 o,48 o,61 º, ºn o,7 I 1,06 29. O,38 o,82 o,62 o,76 gº º O,7 I Aug. 8. O,58 I 3C4. o,8O O,97 º º O,74 18. o,81 I 329 ISOO I, 19 - - o,8 I 28. 1,06 I,56 I 32.2 I 344. º º O,9 I Sept. 7. I, 32 I,86 I 245 I,7 I mº sºme I, O3 I 7, I,6o 2, 17 I,7 I 2,OI tº ºmas I, I 9 27. I,89 2,5C I 399 2,32 ** * I 337 Oćt. 7. 2, 18 2,84. 2, 27 2,64 || -- I,57 I 359 17. 2,46 3, 19 2357 2,98 I,83 I,83 27. 2.75 3,54 2,87 3,32 2, I I 2, I I I 355 Nov. 6. 3,O2 3,89 3, IO 3,66 234. I 234C I,79 16. 3,28 4x24. 3.245 43 OO 2,72 2,7 I 2,06 2,O 5 26. 3,5 . . 4,56 3,73 || 4,31 || 3:03 || 3,04 || 2,36 2,34 Dec. 6. 3,72 4,86 3>99 4,61 3234 3,37 2,65 2,65 16. 3,88 5, I 3 4x22 4,87 3,63 3,68 3) O2 2597 26. 4,OI 5,35 434 I 5, IC 3,9 I 3,98 33.35 33.3 I 31, 4,06 || 5,45 4,49 5,29 || 4393 || 4, I 2 325 O | 3,47 -v -- * -- A/ -ºr º º // // Z/ // Motions in R. A. | —0,042 —o,o 19 —o,053| –o,062 - - —o,027 in P. D. + 1,2O | ( 28 ) Y. farpenoix. CORRECTIONS of R. A. in Time to every Tenth Day—continued. Spica TV Aréturus. a tº 2* & Coronae & Serp" | Antares. .*low- -w-º-º: ** // // A/ d // // \r // // Jan. o. —o, 19 || –o,49 –o,63 ||—o,97 || -o,88 – 1, 15 — 1,26 || k Io. +o, I 8 O, I 7 O, 3 I o,67 o,6o o,85 | I, II // 2O. o,5o +o, 17 | + c,02 o,36 O3.3 I O353 o,82 –o,83 3O. O,8O o,48 o,35 oxoa, O,OO o,2O o,54 o,58 | Feb. 9. I, o& O,79 o,67 |-|-o,29 |+o,31 | +o, t 3 o,29 O3.3 I .* 19. I 333 1,08 || O,97 o,61 o,61 O,48 || + O,OI O,O3 Mar. I. I355 I 334 Ix 25 Ox92 O,90 Ö,8. I o,29 || --O,27 II. I 373 1,56 I, 5o I,2, I I, 17 I, I 3 O,59 o, 55 | 2 I. 1,88 I 375 I,72 I 247 I 342 I 544 o,87 o,84 3 I • I,99 I,9 | I 592 I 57 O 1,65 I 373 || I, I 5 I 3 I 2 Apr. Io. 2,06 23 O3 2,08 I,89 1,85 I , 99 I 34-2 I 539 2O. 2, II 2, I I 2.32 I 2,O7 23 O2 2.223 1,65 1,65 3O. 2, I 3 2, 16 2,33 2.32 I 2, IT 2,45 1,86 1,88 May Io. 2, 13 2, I 9 234. I 2,30 2,29 2,63 2,09 || 2,09 | 2O. 23 IO 2, 18 2345 2337 2337 2,79 2,27 2,28 3o. 2,06 23 I 5 2,48 2240 2243 229 I 2243 2544 June 9. 23 OO 2, Io 2,47 234C 2,46 3,OO 2353 2,56 I9. I,92 2,03 2,45 2,37 2,46 3,O5 2,63 2,65 29. 1,83 I 393 2x39 233C 2243 3507 2,65 2,70 July 9. 1,73 I,82 22.3.I 232 I 2,37 3305 2,66 2,7 I 19. 1,63 I,7O | - 2,09 2329 2299 2,61 2,70 29. 1,53 || 357 |_-_- I, 94 2, 19 2,99 2,52 2,63 Aug. 8. I,42 I,4 I 1 - - I,77 2,O7 2,78 2,42 2,53 18. I 332 Ix27 tº sº, 1,60 1,91 || 2,64 2,25 234. I 28. I, 24 I, I 5 || - - I 34-2 tº * 2547 25 I 2 2,26 Sept. 7. 1, 16 I,O3 - - 1,24 tº gº 2,30 1,93 2,09 17. I, I 3 O39 I tº gº - - I - - 23 I4. 1,76 I 39 I 27. I , I I o,84 nº ºn * º sºs tº I,98 I, 5.9 I 574. Oćt. 7. I 3 I 4. o,8O gº tº tº em gº tº 1,85 I 24.2 I, 57 I 7. I 32 i o,8O tº sº * - ſº tº ºn I,75 I, 28 I 343 27. 1233 O,85 º nº tº gº tº gº 1,65 I, I 7 I, 39 Nov. 6..] I,42 O395 tº sº. &_º tº tº dº 1,66 I, Io - I6. I,65 I,O9 - - * * ems tº 1,69 I.O.9 26. I 59.3 I,27 tº sº. anº & mº 1,78 I, IO Dec. 6. 2,2 I I 350 - - * tº gº tº I 393 I, I 5 16. 2,51 I,77 - - + 1, 18 gº 23 I 3 I 32 26. 2,83 2,O7 tº º I,42 + 1.9% 2337 I 340 * 3 I. 35CO 2,22 + 2,67 I, 56 2,05 2,5 I I,47 \ -k | | As t *** º l // * ‘x. ** * --- Motion in R. A. - - ) –O,O93 -* .*-r in P. D. - - +2,01 f - ~. CORRECTION S of R. A. in Time to every Tenth Day—continued. a. Lyrae. 2 Aquilae. 2 vs 2" | & Cygni. 2 : Fomalhaut. •Pegafi. a. Androm. F- // z –F– // // A/ sº // Jan. o. - 1,67 – 1,27 - - ||— 1,59 - - —o,73 || -o,58 || -o,23 IO. I,55 I,2O | - - || 1,64 - - o,81 o,67 C, 37 2O. I,38 I,O9 * * I,64 tº e º 'º o,87 O373 O349 3O. I, I 7 O,95 tº º I, 58 tº º, O,91 tº gº o,59 | Feb. 9. O,93 o,77 - - I,47 - - o,92 - - o,68 19. O,65 O,57 * - I, 3 I tº ſº. o,89 º ºg O,73 Mar. I. O235 o,36 - ama I, I I - sºme o,82 II. O,O4. O3 II // T o,87 * * o,7 I 21. --O,29 +o, I7 +o, 13 o,58 tº º º o,58 } 3 I.] O.63 C344. O34. I O,27 - - || 9,49 | Apr. 10.| o,95 O,72 o,7o +o,07 tº º o, I 9 20. 1,27 | 1,02 O,99 O34. I - - || +o,06 3O. I 357 I 23 H | I 33 I O,78 - - o,35 May 1o. 1,85 1,60 I,61 I, I 5 º º o,65 2O, 2, IC I,87 I39 I I, 5O sº gº O,98 3O. 2232 2, I 3 232O 1,83 * tº 1,32 | + I, 14 +o,78 June 9. 2,49 2,37 2,47 2, I 4 // T 1,67 I,46 I, I I 19. 2,63 2,58 2,7 I 2,41 || + 2, 12 2,OI I,7o I 345 29. 2,72 2,75 2.293 2,65 2,4G 22.35 2 o'7 I,78 July 9. 2,76 2,89 33 IO 2,83 2,64 2,67 23.35 23 II I9. 2,75 2299 3, 24. 2597 2,87 23.95 2,61 234. I 29. 2,70 3,95 || 3,33 3594. 3,O4 332 I 2,84 2,7G Aug. 8. 2,59 3,06 3,38 33C7 3.08 3:42 3,O3 23.95 18. 2,44 32C3 3,38 35C3 3,28 32.59 3, 18 3, 17 28. 2,25 2,96 3534 23.95 3233 337 I 3,28 3234. Sept. 7.| 2,03 || 2,85 3,26 2,81 3,35 | 3,77 | 3,35 | 3,47 I 7.| I,79 2374. 3: I 5 2,64 3233 3,8o 3337 3357 27. I 554 2,58 3302 2243 3, 27 3,78 3.37 || 3.62 Oćt. 7. 1,29 2342 2,87 2, I 9 3, I 7 3573 3232 3,64 I7. I 3 O4. 2,25 237 I I 594. 3,O7 3,63 3.25 || 3,63 27. O,8 I 2,09 2,55 I,96 23.95 325 I 3, 16 3,67 Nov. 6. o,62 I 594 234. I I 34-3 2,8 I 3337 3.05 3350 I6. o,47 I,82 2329 I, I 9 2,68 33 23 23.93 324C 26. O,35 I 372 2, 19 O,97 2,56 3,O7 2,81 3229 Dec. 6. o,28 1,66 22 I 2 O,78 234.5 2292 2,65 33 I 7 16. O, 27 | 1,65 * ºn o,62 2335 2,72 2257 3,O3 26. C,3O I,65 * = O,5O 2,25 2,67 2,46 229 I 31. Ox35 1,68 emº tº | C24.5 * * 2,61 234. I 2,83 Motion in R. A. // +o,038 || |Appendix. **** *º-ºº: – C OR RECTIONS of R. A. in Time to every Tenth Degree of Long, of D's Aſcending Node: Copied from Dr. MAsk Ely NE’s ; with the Addition of a Herculis. ---. º. * * * **** Arg, Long of & y Pegafi. & Arietis. • Ceti. Aldebaran. Capella. Fi " Rigel. 8 Tauri. or Orionis. S o S // A // # / // . w |..." |- w O. o VI. —o, 16+|-o,23+|—o,03+! —o,07+| –o, 17+ +o,03–1–b,07+ +o,o 1 + IO O235 C343 C322 O,29 o,44 - || –o;15+ 6,31 o,2I 2O O352 o,62 O,4 I O,49 o,69 O333 O,53 O34C I. o VII. o,68 O,79 o,58 o,67 O393 O349 o,73 || o,58 IO o,82 O394. O,73 o,84 1, 13 o,63 O,92 o,75 2O O394 : I 3O5 o,87 o,98 I 33 I o,77 i,97 o,89 II. O VIII. 1,03 I; I4. O,97 I 3G 9 I 344- o,87 1,20 | 1,00 I O 1,08 I, I 9 I O 5 I, I? I, 53 O, 95 I,29 I 509 2O I, I O I, 2 I I, IO I, 2 I I,57 I 3CO I 233 ! ; I4. III. O IX. I,C9 I, I 9 I, II I 32 I 1,56 I so.3 1,34 I 15 IO I, OS I , I 3 I,O9 I, I 9 I 35 I I 3G I., i. I I, I 3 2O O,97 I ,O3 I,C3 I, I f I 34. I o,97 I, 23 | 1,08 {V. o X. o,87 Q39 I Ox95 I,OI I,27 O29O 1,13 O299 | I O O,73 o,76 o,83 o,88 I 509 O,8o o,98 o,88 2O O. 58 O259 o,69 O,73 o,87 o,67 o,81 Q,73 V. o XI. O,4 I O,39 O,53 O, 54. o,63 O,53 o,61 O,57 I O O,23 C, I 9 O235 O,35 O,37 O,37 O,39 o,39 2O O,O3 | + O,O2– I, I 7 O3 I4. O, IO O,2O o, 16 o, I 9 VI. o XII. F +o, 16- o,23 +o,03–| +o,07—| +o, 17– O,O3 +o,07— —O,OI + Arg. Long.of 62 Sirius. Caſtor. Procyon, Pollux. & Hydrae. Regulus. | 8 Leonis. 8 Virginis. S o S // // // */ // // z— // O. O. VI. —O,O3+ i +o, I 3–| + O,O3– +o,13– —o,07+| +o, I 3— +o, 17- --O,O3– I O o, 19 —o, I I + —o, 17-- —o, IO-H o,25 —o,07+ —O,O2+| –o, 15+ | 2O O,35 O3.34. -O,37 O,33 O, 4.2 o,27 o,21 O, 34. I. O VII. O,5O O,57 O355 Ox55 o,58 O347 O34.O O352 I O o,63 o,78 O,7 I O,75 O,73 o,64 o,58 o,68 2. O O,75 O,97 o,85 O,93 o,85 o,8o O,73 O,8I II. O VIII. o,84. I, I 2 O,97 I,09 O,94. O393 o,87 O393 I O o,91 I 325 1,06 I, 2 I I 30 I I 593 o,98 I 3 O2 2 O O395 I 333 I, II I 329 I ,O 5 I, II 1,06 I,O7 III. o IX. O,95 I 537 I, I 3 I 333 I SO5 I, I 5 1, 1 i I 509 I O O393 1,38 I, I 2 I 333 I 503 I, I 5 I; I 2 I309 2O o,89 I 334 I,O7 I 329 O,97 I, I 2 I, IO I.O4. IV. o X. o,81 1,26 O,99 I 32.2 o,88 1,06 Ixo 5 O,97 IO O,7 I I 3 [4. o,89 . I, II o,76 o,96 o,96 o,86 2O O,59 O399 O,75 o,96 o,63 O,83 o,85 O373 V. O XI. O,45 o,8 I O,59 o,78 O,47 o,69 o,70 o,58 I O O33C o,6o O)4. I o,58 O,3O O, 5 I O, 54. Ox4. I 2O O3 4. O,37 O32.2 o,36 O, I 2 O233 o,36 O, 22 VI. o XII. +o,03–| o, 13 O,O3 o, I 3 || --O,O7–| O, I 3 Q, I 7 O3O3 -ºr-sa- — CORRECTIONS of R. A. in Time to every Tenth Degree of Long. of D's Aſcending Node—continued. º Argiorgof & Spica my Aréturus. | a tº 2" | a Coronae. a Serp" Antares. 2 Herculis. & Ophiuchi. S o S 7, \ // // // // // ~ // // O. o VI. —o, I 1 + +o,20–|—o, 13+|+o,21–|+o,05–|-o, 13+ +o, 15— --O,02– … . . Ho O23O OsO3 o,33 o.o.5 -o, 13+ o,36 o,03 || -o, I 5–H *2O o,48 —o, I 5-H o,53 -o, I 1 --| O,31 o, 57 —O,O3 + | O,3 I I. o VII. o,65 Ox33 o,7o O,27 o,48 O,77 O, 2C) C, 47 I O O,8o O_49 o,85 O34-2 o,63 O394. O, 32 C,61 2O O393 o,63 O,98 Ox55 o,77 1,08 C34C O374. II. O VIII, I 3 O2 O,77 I,O8 o,67 o,88 I, I 9 O349 o,84. IC I,09 o,87 I, I 5 O,77 O,97 I 327 o,56 O392 } 2O - I, I-2 CŞ95 I, 18 o,85 I, O2 I 53C o,62 O,97 III. o IX. # 3 I 2 I,OO . I, 17 O,90 I SO 5 I 330 o,64 O399 1 O 1,08. I 3 O2 • I, I 3 O,92 I 3O4. 3 x 25 o,67 o, 98 2O I 3O I I,OI. 1,06 O,9 I I ,OO I, i 7 o,66 O393 IV. o X. o,91 O,97 O,95 o,88 O293 I ,O 5 O,64 o,87 Io O,79 O29O O,81 o,82 o,83 o,9t O259 O,77 26) o,64. o,8O o,65 O,74 O,7 I O,7 I O, 52 o,65 V. o XI. ; , o,47 o,67 O,47 o,63 O357 O353 Ox4-5 o, 5 I IO o,28 O353 o,28 O25 I O34O Q93 I O235 o,36 2O O,O9 e, 37 O,O7 o,36 O, 23 O,O9 O,26 O, I 9 VI. o XII. +o, I 1–| o,2O +o, 13—| o,21 o,05 |-|-o, 13– o, I 5 O3O2 **. - ! * Arg Long.of S} | . e. Lyrae, & Aquilae. | 2 ºf 2*. o, Cygni. | - fº Fomal. o, Pegaſi. & Androm. !- S o S z/ // // // // // // // O. o VI. —o,06+|—o,04-H | +o,08–|—o,39-H | +o,or—|+o,36–|—o, 15+| –o,33+ IQ O, I 9 O32. I --O, I 3-- O35 I —O; 17 O, I 5 O333 O352 2O O,31 O,39 O,33 o,61 o,36 —O,O7+ O, 5O o,69 I. o VII. O)4. I G355 O353 O,7O C354- O,28 o,66 o,83 I O O, 5 I o,69 O,7 I O,77 o,69 O,49 O,79 C, 95 2O O,59 o,81 o,86 O,8 I O,83 o,67 O,9 I I ,O 5 II. o VIII.] o,65 O,9 I O,99 o,83 O295 o,85 o,99 || 1, I O o,69 o,98 Izog o,8 I I5O3 O, 99 I, O5 I, I 3 2O O,72 I SO2 I, I 5 o,78 1,08 I, I O I, O7 1, 13 III. o IX. O,72 I,O3 I, I 9 O,73 I, I O I, I 9 I,06 I,09 I O. o,69 I,OI I, 18 O,65 I 509 # , 23 I ,OI I, O I 2O o,65 O,95 I3 ſ 4. O,55 I 3O4. I , 23 O,94. o,91 ------------" } IV. o X. O,59 o,87 I ,O) Ox4-3 o,96 I 32 I o,34. O,77 I C) O35 I o,76 o,96 Q, 3 I O,85 I 3 I 4. C,7 I o,62 2O O34. I o,63 o,82 C, I 7. O,72 I 3 O4. O, 57 O34.4. V. o XI. O,3 I o,48 o,66 C, O3 o,56 O,9 I Ox4 O o,2; IO O, I 9 O23 I o,48 || --O, I I — O,39 O,74 O322 O, C7 2O o,06 O; I4. C,2 O,25 O, 2 I o,56 O,33 --O, 4 – VI. o XII. +o,06–| +o,04 o,C8 O, 39 O3O I o,36 H-o, 5— o,33 ! ~~ --~~~~ * -- ~ * * ——- -vur- —ºr wº- wº- --------------rurer- § 3. ;" is ¥-Er sº *X--- *-*s-sº-sºsºmsºmºsºmarºº ~~~~ *erse wesºmnºsºvºsºvºse-º-ters sºreº THE following TABLES are calculated to give the Correótions in N. P. D. for the Stars of Dr. Maſkelyne's Catalogue, as the foregoing, copied from his Tables XVII. and XVIII. do in R. A. The firſt Table compriſes the effects of Praeceſſion, Aberration, and the Solar Inequality, for every I oth Day of the Year. The ſecond compriſes the effect of Nutation, for every 1oth Degree of Longitude of the Moon's Node. They neither of them contain any Allowance for the Motions in the Stars themſelves; which ſeem, as yet, not to be ſufficiently aſcertained. Theſe Tables are adapted to the year 18oo; but the differences are inconfiderable, for many years before and after that period. mº K.'s **. s: ? f--º- --- K 33 ) (IV.) 2-&- Aº ºv. C OR RECTIONS in N. P. D. for every 1oth Day of the Year. PART II. 3 Pegaſi. a: y’ a Ceti. Aldebaran. Capella. Rigel. 8 & 3 Orionis. A/ // A/ Z/ // // // // Jan. o. --3,62 —5,82 +o,61 — 1,33 —4,37 + 2,89 || – I,71 + 1,2 I Io. 2,87 5,56 I, 24. I, I’I 5,68 4233 2, 27 25 O I 2O. I 392 5; I4. I,84. ,82 6,82 5,64 2, 52 2,74 3O. o,91 4x4C 2,49 3.54 7,80 6,80 2374. 3,36 Feb. 9. o,oo 3,70 2,92 ,31 | 8,52 7,70 2,99 || 3,85 I 9. +o,88 22.94. 3 27 ,06 8,92 8,36 3, II 4, 27 Mar. I. 1,78 2, I 2 3:49 || -i- 222 9, 24. 8,81 3, I 9 43 52 II. 2,6 I I, O7 3,74 353 9, 18 9,06 3, 19 4,72 $ 2 I. 33 I 3 ,28 3,67 ,78 8,8. I 8,98 2,92 4,77 3 i. 3,4 I | + ,47 3,48 397 8,23 8,66 2,68 4,75 Apr. Io. 3,54 1,20 33 I 7 I, I 8 7, 34. 8,36 2, 57 4,62 2O. 3, 49 1,62 2, 5 I I, I 9 6,26 7, 30 I,85 43 39 3O. 2,86 I,79 I,65 I 3 20 5,08 6, 24 I,36 3,98 May 1 o. 25 II I 374. 259 I, O3 3574. 4,92 I 3 C 3,48 } 2O. 392 1,57 - , 52 ,69 2,36 3344 3 4.2 2, 82 3Oc - 25 I 395 2,O4. 233 I 3 O 1,78 ,08 2, O9 June 9. 2,27 3C9 3,64 — 22 | + , 24 — ,o 5 | + , 22 I, I 6 I 9 4, I 2 – I, I 3 5,39 I, I 2 I,4C 2,O3 > 39 , 26 29. 6, 12 2,36 7, O7 1,8C 2, 5O 33.95 , 54 — ,76 k July 9. 8,37 3, 9 I 9, O I 2,76 3×24 52.94. 242 I,82 19. Io,62 5,66 Ic,72 3,88 3,87 7,82 , 28 2,88 - 29. I 2,74 7, 25 I 2, 22 4,68 4,31 9,60 3 II 3.399 Aug. 8. I 4,81 9, 25 I 3,80 5,80 43 53 I I, I 5 ; – 3 O 5 4,85 18, 16,79 I I, I 5 15,28 6,77 4352 I 2,46 343 5,57 28. 18,66 | 12,98 16,64 7,7O 4, 28 13,49 ,89 6, 26 Sept. 7. 20, 26 I4, 59 17, 24 8,45 3,91 I 43 II I, 28 6,7 I * } 17 2 i , 50 16,25 | I7, 97 9, I 5 3,33 I 4-34 I I,69 6,99 27 22,84 17,74 18,43 9,72 2.63 || 14,23 2, OS 7, O4. Oćt. 7. 23,75 | 19, 1 I 18,64 10, 13 1,75 | 13,90 2, 5 I 6,88 I7. 24, 45 20, 14 18,46 Io,34 27 F ] I 3, i 7 2,86 6,49 ^ 27. 25,03 || 2 I, 12 18, 22 Io,47 — ,43 I 2.5 t 2 3, 26 5,94 Nov. 6, 25,36 22,90 17,83 10,50 I 364 o, 8 I 3,80 5,23 16. 25,43 22,69 || 17,27 Io,46 3,OI 9, 34. 4x49 4, 37 26. 25, 27 || 23,OO | 16,53 | Io,28 4,38 7,69 5, I I 334-5 | Dec. 6. 25,00 23, 52 I 5,87 I O,O4. 5,80 6,05 5,65 2,48 16. 24.65 23,59 15, 16 || 9,83 7, 25 4,37 6, 13 I , 52 26. 24, IO 23,48 14,48 9,60 8,67 2,76 | 6,45 361 3 I 23, 53 || 23, 27 I 4,08 9, 49 9; 34. | I 595 6,59 3 IZ F [Appendix. 's C OR RE C T I O N S in N. P. D. for every 10th Day of the Year—continued. Sirius. Caſtor. Procyon. Pollux. & Hydrae. Regulus. & Leonis. |8 Virginis. // zz /A // // // // // Jan. o. + 1,78 + 3,73 || + 2,29 + 3,94 | +o, 17 | + 5, 14 | +6,71 + 2,56 lo. 3, 17 | 3333 || 3,49 3,82 2,32 || 6,50 8,38 4, 55 2 O 6,02 2,83 4,64 3,62 4235 7,7 I 9,72 6,37 3O. 7,86 25 I 3 534C 3, II 6, 12 8, 4. I I O,74 7,84. Feb. 9. 9 98 I 34-2 6, 13 2,66 7,89 9,07 II, 58 9,26 I 9. I O,73 ,76 6,73 2, 2 I 9,44 |_9.33 12,09 || ro,43 Mar. I. I I,79 ,06 7; I4. 1,49 | Io,65 9,69 | 12,29 || 1 1,36 ſ I. I 2, 5 I - 379 7,34. ,86 I I, 56 9, 52 I 2, 1 I II 395 2 I. I 2.399 I 322. 7545 ,36 I 2, 4 O 9,42 I I, 65 I 2, 22 3 I I 3,O7 1,67 7,44. - O 9 I 2, 94. 8,97 I I, I 2 I 2, 4. I Apr. Io. I 3,08 25C3 7,26 > 59 I 3, I 3 8.33 to,39| 12,39 2O. I 2, 37 2, 24. 6,98 ,67 I 3, 22 7,76 93.49 I 2,09 | 3O. II, 4 I 2, I f 6,60 27 O I 3, O9 7,28 8,46 I 1,65 May 1 O. Io,34 I , 99 6, 17 ,72 I 2,83 6,73 7, 56 | I I, 13 2O. 8, 9 I I, 75 53.54 ,69 | 12, 15 5,99 6,44 Io, 5o 3o. 7, 23 123' || 4.94 ,65 I I,47 5,50 5,66 || 9,96 June 9. 5,49 || 75 4-5 IO ,2O | Io,62 5,OO 4,90 9, 29 - 19. 3,38 sco 3,46 + 42 9,72 4,66 || 4 37 8,73 29. 1,29 + , 52 2,70 ,82 8,54 4; 22. 3,83 8,04. July 9. — ,84. 1,26 1,78 I 333 7339 4204 3:45 754C) I 9 23.93 2, I 2 I SO4. I 39C 6, 26 3,97 3, 27 6,85 29. 4,93 2,78 33 I 2,43 4,99 || 3,83 3,27 6,34 Aug. 8. 6,73 3, 54 - 333 3, O7 3394 3,99 3, 54. 6,o 5 I 8. 8, 2 I 4,38 ,88 3,77 33 O2 4, 3 I 43 O5 5, 9 I 28. 9,49 5, I 3 I, 25 4, 5 I 2,2O 4,68 4,76 5,89 Sept. 7, Io, 37 5,90 : I 243 5, I 9 I 25 5,28 59.59 5,97 17. Jo,83 6,7. I T 234 5,89 I 334 6, Io 6,65 6,29 27. IO, 94. 7, 45 395 6,81 I 35Q 7, 39 7, 92 6,82 Oćt. 7. Io, 53 8, 30 ,46 7,56 1,89 8,47 9.51 | 7,7 I 17, 9,65 8,95 + , 25 8,43 2,26 9,74 I I, 22 8,75 27. 8,56 9,58 Is 22 9,04. 3, 32 II: 33 I 3, I 9 I O, I 3 Nov. 6 6,94 | Io,05 2,36 9,77 4,65 I 3, O 5 I 5,26 1 I,7O 16. 4,83 || 10,69 3.375 IO, 52 6,31 14,86 17,47 | 13, 5 I 26. 3,02 || 1 O,88 4,93 | I I, 26 7,99 || 16, 5o 19,47 I 5, 24. Dec. 6. ,83 11,04 6,38 I I,67 I O,OO I 8,31 21,69 I 7,32 16. + 1,47 I I 3 O4. 7,70 I I,77 I 2, Io 20,05 23,79 I 9,4C 26. 3,8o IO,90 9, 2 I I 1,78. I4, 29 2 I,82 25, 8 I 2 I 355 31. 4,91 || 10,74 9,76 || 1 1,78 15,32 22,45 - 26,65 22,49 APPENDIX.] * * z --> & Tºº y COR RECT I O N S in N. P. D. for every 1oth Day of the Year—continued. * Spica w Aréturus. a gº 2. • Coronae. a Serpº. Antares, jo. Herculis. « Ophiuc. // // // // // // */ // Jan. o. —2,04 || +7, 56 —3,29 + 5,68 + 2,85 —3,64 + 2,88 || -- 2,25 I O. 2 O4. 9,78 I,72 || 1 o, I 8 4,89 3, 5 I 3, II 4,36 2O. + 1,97 | I I,72 >O9 | I 2, 39 6,83 2,89 7, 24 6,38 39. 3,77 || 13, I 5 | + 1,41 14, 23 8,46 2,07 9, Io 8, 20 Feb. 9. 5,70 14,36 3, G3 I 4,78 9,98 I 32.2 Io,76 9,78 I 9. 7, 32 I 5, I 5 4,64 15,83 II, I 9 337 I 2,08 I I, IO Mar. I. 8,85 15,52 5,96 || 17,37 | 12,05 | + , 5 I I 2,96 || 12,08 II. 9,82 I 5,35 7, I 3 || 17, 28 12, 52 1,38 I 3, 53 | 12,64 2 I. Io,90 I 4,92 8, 25 16,87 I 2,73 2,25 13,68 12-34 3 I. 1 1,76 I4, 15 9, 2 I 16,o I I 2,63 3,08 I 3,7 O I 2324. Apr. Io. 12,24 I 2,95 9,85 14,63 I 2, o& 3,79 I 2,75 I 2,O 5 2O. I 2,68 I 1,64 || Io,47 I 3,O2 1 1,26 4,46 II 372 I I, O6 3O. I 2,93 IO, I4. I O292 I I, I 2 IO,47 5, II Io,36 9,84 May 1 O. 13,41 8, 59 I I, 22 8,94 9,37 5,72 8,78 8,33 2O. I 3, I 5 6,77 II, 3 I 6,76 8 o I 6, 12 6,95 6, 55 3O. I 2,98 5, 19 I I, 27 4, 54. 6,72 6,62 5,O2 4,68 June 9, 12,64 3,64 I I, 18 2, 37 5: 39 7, O3 3, O I 2,7 I I 9. I 2, 3 I 23.35 I I, CO 3.37 4, I 5 7,45 I 3 O9 ,82 29. 1 1,66 1,08 I O,67 — ,48 2,87 7,69 — ,84 — I, II July 9. I I,08 , I O I O 39 3,O7 I 379 7, 95 2,58 2,86 I 9. 1 O,55 – 356 I O,OO 43.34. ,87 8, 12 4, 3 4:44 29. 9,76 I, I 2 9,46 5,44. - O3 8, 14 5, 55 5,86 Aug. 8. 9, 1 I I, I 9 8,96 6,02 ,62 8, 16 6,69 7, C6 I 8. 8, 5.5 >99 8,50 6, 19 397 7, 98 7, 52 7,77 l 28. 8, Oo 25 ſ 7,89 6,06 I, I 5 7,76 8, O6 8, 6 I Sept. 7. 7,38 + , 16 7,36 5,85 I 3 2C) 7235 8,4 I 9, OO I7. 7, IO I 329 6,95 4,67 , 88 6,97 8,34 9, O7 27. 6,97 2,68 6,59 323C ,36 6,42 8,O4. 8,84. Oćt. '7. 7,06 4,38 6,36 I , 75 + 342 5, 98 7339 8,34 17. 7, 18 6, 17 | 6,23 + ,og I 530 524. I 6, 5o 7,59 *7 | 727s 8,53 6, 29 I , 33 2,62 42.95 5, 25 6,53 Nov. 6. 8,56 || Io,73 6,63 5,88 43 O.S 4,56 3,78 5, 22 16. 9,69 13,34 || 7,24 7, 57 5,80 4,28 I , 99 3,61 26. Io,82 I 5,90 7,84. IO,3O 7, 54 3,88 3O7 I,88 Dec. 6. I 2,38 18,37 8,88 13, I 2 9, 5 I 4,93 + 1,97 + ,oz I6. I4, II 2O,98 IO,O3 I 5399 I I, 58 4, 16 4, 18 2,C6 26. 16,04 || 23,51 II 345 I 8,84. I 3,7 I 4,48 6, 5 I 434 i 31. 16,94 24, 53 I 2,09 || 20, 14 I4,75 4,62 735 I 5, 2 I F 2. C OR RECTIONS in N. P. D. for every 10th Day of the Year—continued. 2 & Lyrae. & Aquilae. & Vºf 2. & Cygni. & 2& Fomalhº. a Pegaſi. 2 Androm. // // // // // // // // Jan. O. +o,95 +o,09 | + 2, 57 —6,29 + 1,35 | +9,85 -3,28 —8, 15 I O. 3,93 1,60 2,88 3,72 2, O2 9,39 22.32 7,30 2O. 6,81 2299 3, IO I, OO 2,65 8,71 I, 2O 6, 13 3O. 9,60 4,62 3,36 | +2,55 33.4 O 7,89 + , Io 4,73 Feb. 9. I I,96 5.93 4x4 I 4, 19 3,88 6,7 I I 325 3,36 I 9. I 3, 99 7, O4. 3,35 7,OO 452. I 5,28 2,5 I I,89 Mar. I. 15,65 7,89 3, 14 || 9,33 || 4,37 3,63 || 3,29 232 I I. 16,75 8,53 2,87 | I I, 5 I 4,47 2,O3 || 4, 14 || -H I, 2O | * 21. 17,34 || 8,79 2, 22 I 3, II 4, 18 – Og 4,78 2,46 3 ſ. 17, 3d 8,66 1,62 I 4,03 3.65 2, 13 5, O I 3: 56 Apr. Io. 16,84 8, 29 ,88 14,63 3: O2 4, 1 I 5, I 7 4,48 hºm 2O. I 5,67 7, 56 — , 17 I4, 56 I,98 6,45 4,78 5,08 3o. 14,06 6,30 I 53C 13,64 ,64. 8,69 4,05 5, 2 I May I O. I I, 97 4,87 I , 54 I 2,64 — ,88 1 O, 92 3,OO 5,07 2O. 9,59 3, 24. 3375 IO, 93 2,47 I 2397 1,76 4, 5 I 3O. 6,74 I 235 53C4. 8,73 4,36 | I 5,03 3O5 3,45 June 9. 3,74 — ,78 6,35 6,06 6,35 | 16,92 | –I,95 23 OO I 9. I,7O 2,76 7, 52 3, IO 8,31 I 8,49 4,06 ,36 29. —-2,40 4,74 8, 5o 3O2 Io, I 2 | 19,64 6, 17 | –1,67 July 9. 534C 6,77 9, 45 -3, 32 I 2, OI 20,6 I 8,55 3,87 1 9. 8, 20 8,66 I O, 23 6,71 I 3,78 || 2 I, 25 | Io,94 6,35 29. 10,86 IO, 32 Io,72 9,98 I 5, 18 2 I : 33 I 3, IO 8,76 Aug. 8. 13,22 I I 93 I I, 2O I 3: 34 16,61 2 I, 26 I 5s 3O I 1,28 18. I 5, 16 || 13,25 | I I,46 | 16, 25 17,74 20,86 17,4 I I 3,85 28. I 7, II I4-329 I I,6,I 19,06 I 8,72 2O, I 4. I 9,3 I 16,36 Sept. 7. 17,98 || 15, 26 1 I,62 || 2 || 48 19, 26 || 19,06 20,66 18,63 17. 18,73 || 15,68 || 1 I, 39 || 23,34 || 19,74 17,94 22, 16 20,74 27. 18,96 | 16,05 1 1,22 || 25,23 20,02 | 16,66 23, 21 22,76 Oćt. 7. 18,78 16,27 Io, 98 || 26,53 20, 12 I 594-2 || 24, 34. 24,46 17. I 8, 14 | 16,06 Io,59 27, 19 | 19,89 || 13,88 || 24,85 || 25,91 27. 16,93 15,68 Io, 24 27,59 | 19,65 12,655 25, 25 | 27, 19 Nov. 6. 15,54 I 5,09 9, 93 27,49 I 9, 32 i I 357 25,45 28, 2 I 16. 13,62 14,25 9,54 26,81 18,82 Io, 58 25,38 28,78 26. I I, 36 13, 17 9, I 5 25,62 18, 16- 9,73 || 25,02 29, I 3 Dec. 6. 9,04 || || 2,OO 8,79 24,46 17,58 9,28 24,56 29, 26 - 16. 6, 18 Io,7 I 8,47 22,42 16,94 9,06 || 23,93 29, Io 26. 2,98 9, 24. 8, 13 | 20,06 || 16,26 9, II 23, I I 28,64 3I.] I, 55 8,46 7,97 | I 8,72 | I 5,83 9, 16 22,31 28,31 Appenb£x.j ( 37 ) ( V. ) C O R R E C T I O N S in N. P. D. for every io° of Longitude of p's 8. v- y Pegafi. | z ^Y^ r- ez Ceti. | Aldebaram. Capella. Rigel. g ö | z Orionis. g—;—p—; ,// // - // // j_, // // » O. o VI. | — o, io +]—4,37-+-|—6, 1 3+-|—8, 16+}—8,7 1 + | —8,75-+-, —8,82 + 1 —8, 97+ 1 O -+- I,o8— | 3, 28 5, 2o 7,56 j 8, 29 8,33 8,45 8,69 2o Q » 2 I 2, IO 4, C9 6,74 .7,62 7,66 7,83 8, 28 I. o VII. 3,28 K. ,85 2, 87 .5,7O 6,7 1 6,78 6, 96 7» 54 I O 4, 23 ] -+ »43-] I , 55 4, 5O 1 5» 59 5, 66 5,9O | 6, 58 + 2O 5,o7 I,68 s 2O | 3, I7 4»4.2 4-»4O 4,64 534 I 1 I. o VIII. 5375 2,89 | -+- I, 18—| 1,74 2, 9 i 2» 99 3» 25 4,o8" I O 6, 27 4»O I 2, 5o » 25 I , 4. O I 547 I ,76 2,63 2O 6,59 | — 5,o 1 3,76 ] + I, 24— -+- , I 3— | -- ,o 5— » 2 I I , I O III. o IX. 6,7o 5,85 4,9O 2,7O 1 »67 | I , 59 | -+ 1 , 34-] + »47— I O 6,6 I 6,53 5, 89 4,o8 3, I 8 3,o8 2, 85 |. 2,o2 2O 6,33 7,OO 6,7 I 5, 33 | 4, 56 4,48 4, 28 3» 5 I IV. o X. 5, 85 7, 26 7, 3 I 6,42 5,8 1 5 575 5, 56 4,89" 1 O 5» 2 I 7, 3 I 7,69 f 7,32 6,88 6, 83 6,7o 6, I 3 2O 4,38 7, I I 7,83 7,98 7»75 7,72 7,6o 7, I 8 V. o XI. 3»43 6,7 I 7,77 8,41 | 8,39 8, 37 8, 29 8,o I I O 2, 48 6, I o 7» 44 8, 58 8,74 8,74. 8,74 8,6o 2O 1, 26 5» 3 I 6,9o I 8,49 f 8,85 8,87 8,9 I 8, 9 I l. l t - - - - - Sirius. Caftor. Procyon. Pollux. a. Hydræ. | Regulus. 3 Leonis. | 3 Virginis. S O S // // A/ // // „/ // A/ O. o VI. | —-8,89--|—8,3o-H —8, 27 -+-, —8, 22-+-, — 5,84-+ 1 —4,6o-H| —o,86-i- | —o,78-+ I O 8, 94 8, 59 8, 57 f . 8, 57 6,62 | 5, 52 I »99 I »9 I 2O I 8,72 8,65 8,6o 8,6o 7, 2 I 6, 28 3, O7 2, 99 I. o VII. 8, 22 8s4o 8,4 I 8,4 I 7» 57 6,85 4, O 5 3, 98 I O 7,48 7,89 7, 92 7»93 7,7o 7, 2 I 4 , 9 I 4»85 2O | 6,51 7, I 5 7, I 6 7, 25 7,6o 7s 35 5,6 I 5» 57 | II. o VÍII. 5» 35 6, I 8 6,29 6,36 7, 28 7, 27 6, I 6 6, I 2 Io 4-»O3 5»O2 5, 16 5» 24 6,73 6, 97 6, 5o 6,49 j 2O 2, 58 3,72 3,89 3592 6,oo 6,46 6,66 6,65 III. o IX. 1 »o5 . 253O 2» 5o 2» 59 5» O4 5,76 6,62 6,62 I O -+- , 5 I — ,8o { I soo I »O9 3»95 4,86 6, 36 6,39 2O 2,o6 ■ -+- ,7o— | -- ,o7—| -- ,44— | 2,74 3,84 f 5, 93 5, 96 IV. o X. 3» 53 2» 2O I, 98 I,86 I , 4 5 2,69 5»3O 5» 35 t I O 4s9 I 3,62 | 341 | 3»36 » IO I , 45 4 » 5 2 4» 57 | 2o [ 6,14 | 493 | 474 ] 465 | * '»39-] '7 3,6o 3,67 J V. o XI. 7, 17 6, 1 I f 5,93 5,8 I 2353 | -+- I, I 1 — | 2, 57 2,64" I O 7» 99 7,o9 6,93 6,88 3,76 2» 35 I , 42 I » 53 2O 8,57 | 785 77. | 767 4.87 | 3,52 »3O j »3 t [AppEnd IX. *sºr *** *xr. º. CO R RECTIONS in N. P. D. for every 10° of Longitude of D’s 3.—continued. Spica TX | Aréturus. a tº 2. .* Coronae, o, Serps Antares. & Herºi. & opius, ** S o S // - W/ Z/ // - // _y/ 7 z. O. O. VI. | + 2,84— +4,69– + 5,71– + 6,98— +7, 17– + 8,04— +8,72— + 8,82— I Q I,7O 3,62 4373 6, I 5 6,37 754. I 8, 29 8, 5 r 2 O 35 I 2, 45 3,62 5, I 5 5, 39 6,56 7,65 s 7,86_ I. o VII. — ,70+ I 32 I 2339 3,98 4, 23 5,59 6,76 7, I 3 I O 1,89 — of + I O3 2,68 2594 4, 28 5,67 6, 1 I 2O 3,O I I , 35 — , 24+ I 32 I, 58 2x 94. 4539 4,90 II. o VIII. 4,05 2, 59 I, 57 — »o 9-H , I 6 I, 5 I 2,98 || 3,54 I O 4,96 3,76 23.85 I, 5o — 1,26+! — so 2-H I,48 2,06 2O 5,72 4379 4-xO4. 2,86 2,65 1,46 — ,o 4-H. 254 ! II. o IX. 6,32 5,69 5, II 4-2 || 4. 3,96 2,91 1,59 |–1,OI + | I Q 6,70 6,43 6,02 || 5,29 5, 15 4,26 3,O8 295.3 2O 6,89 6.95 || 6.75 6,27__6, 17 5,48 4547 3,96 iW. o X. 6,89 7,27 7,28 7,08 7,OI 6,54 5,74 5, 29 I O 6,66 7,38 7, 57 7,66 7,63 7,4O 6,88 6,45 2O 6,23 7,25 7,65 7, 99 8, op. 8,O3 7,70 7,4O V. o XI. 5,61 6,9 I 7, 5 O 8, O7 8, 19 8,42 8,34 8, 14 I O 4,82 6,35 7, I I 7,97 8,09 8,54 8,72 8,62 2O 3,89 5,60 6,51 7, 59 7,75 8,42 8,84 8,85 & Lyrae. o, Aquilae. ce ºf 2. c. Cygni. & Kº Femalhº. & Pegaſi. & Androm. S O S Z/ A/ A/ // // A/ A/ // O. o VI. +8,85— --8, IO – | +7,65—| +6,98–| + 4,66–| + 2,84–| + 2,55—| +o, Io- I O 8,85 8,55 8, 14 7, 54 5,58 3,89 3,62 I, 25 2O 8,60 8,56 8,38 7,98 6,33 4,82 4 58 2,38 I. o VII. 8,09 8,41 8,37 8, I 2 6,89 5,6 I 5,4C 3:43 I O 7; 33 7: 99 8, lo 7.399 7, 24. 6,23 6,06 4,38 20 6,38 7,36 7,59 || 7,65 7,37_|_6,73 6,54 5, 18 II. o VIII. 5, 8 6,48 6,85 7,07 7, 27 6,89 6,82 5,84 IO 3,83 524. I 5,89 6, 27 6,96 6,89 6,87 6,52 2O 2, 39 43 I 9 4,77 5,29 || 6,43 6,70 6,73 || 6,61 III. O IX. ,86 2,82 334-9 4, 14. 5,7 I 6, 31 6,40 6,69 I C — ,69+ I 337 2, I I 2,86 4,82 5,72 5,86 6,57 2O 2,2 I — , I 3-- ,66 MI; 5 O 3,78 4,96 5, I 4. 6,26, IV. o X. 3,68 1,6 I — ,8o-H ,83 2,62 4, O 5 4, 27 - 5,75 I O 5,06 3,O4. 2, 24 |–1,32-H 1,38 3,OI 3, 27 5,c6 QO 6,23 4,38 3,61 2,69 3 I O I,89 2, 17' 4, 23 V. o XI. 7,23 5,60 4,88 3,98 || – I, 18 + 57 O I ,OO y 3,26 | O 8, O2 6,64. 6,oo 5, I 5 2,42 || – , 54-H — , 2 I + 2,2O 2O 8, 56 7,48 6,92 6,05 3359 1,70 - I 34C 1,06 ~g- ( 39 ) **º re-r > --> ** F- * sº (VI.) zz- -ºr- wº-a-rºx P O L A. R. I. S. Mean R. A. for Jan. o. 18oo. Mean N. P. D. for Jan. o. 1800. z- -º- "...º.º.º. iſ *º deduced by La Lande - p lyne to M. G. Roy. By Brinkley's Obſ. - - - o. 52.24, 6 An pree. An. Praec. *- - O / // // , Mean of the two - - - o. 52.23,950 +1%,911 I. 45.34,65 – I 9,52 18ol - - - - - o. 52.36,861 - as sº I • 45. I 53 I 3 18O2 - - - - - o. 52.49,839 tº ºr - I. 44.55,61 18o3 - - - - - o. 53, 2,844 sºr º tº I. 44.36, Io 1804 - - - - - o. 53.15,956 sºm nº º I. 44.16,59 18o 5 - - - - - O. 53.29, I 35 º, º as I - 43. 57,09 1806 - - - - - o. 53,42,381 tº ſº amas T. 43.37, 59 1807 - - - - - o. 53,55,694 ſº sºme tº I. 43. I 8, Io 18o3 - - - - - O. 54, 9,074 * = Gº I. 42.58,61 so = * * * * o. 54.22, 52 I lººs ºr mº I • 42.39; I 2 18 Io - - - - - o. 54:36,035 + 13,581 I. 42.19,64 —19,48 P O L A R I S.–continued. CoRREctions for every 1oth Day of the # Year. R. A. in Time. N. P. D. // A/ Jan. O. + 2,99 – I 9,74 I O. - 3, 20 I 9, 2 I 2O, 9,6 I I 92.54 3O. I 5,57 18,48 Feb. 9. 2 I 32O I 7, 18 I 9. 25,79 l 5:44 Mar. 1. 3O3 25 I3,36 I I , 33,48 Io,85 2 I . 35,69 8,4 I 3I. 36,66 539C Apr. Io. 36,57 2,8 I • 2 O. 35,24 x 2 I 3O. 33, 16 2, 2 3 May 1o. 28,93 4, 5 I 2O. 24, 35 6,64 3O. 18,72 8; 17 June 9. I 2, 5 I 9, 27 I 9. 537 I 9,92 29. + 1,50 1 o, 18 July 9. 8,92 9,68 I 9. 16, o 8,54 29. 22,84. ~7,05 Aug. 8. 29, 54. 4,78 I 8. 35; 24. 2,O7. 28. 4Q, 29 — I, 29 Sept. 7. 4.423 I 437 I I 7. 47,26 8,68 27. 49, I 2 12,76 Oćt. 7. 49,67 16,85 I 7. 49, 3 I 20,78 27. 4757 2 24x7 I Nov. 6. 453CO 28,33 I6. 4. I 539 3 I,43 26. 36,8o 34, I 2 Dec. 6. 31,49 36,35 16. 25, 57 38,02 26. I 9,5 I 39,08 3 I • 16,59 39, 24 t CoRREctions for every 10° of Longitude of )'s &. | R. A. in Time. N. P. D. S O S // k // O. o VI. — 18,99-- — 2,06+ IO I9,44 390 # 2O * I 92.33 + , 28– J. o VII. I 8,66 1,48 I O 17,39 2,61 2O I 5,61 3,67 II, o VIII.] I 323 I 4,62 IO t--. Io,62 5,42 2O 7,68 6,06 III. o IX. 4x44. 6,52 I O 1505 6,77 2O + 2,35— 6,81 IV. o XI. 5,68 6,68 IO 8,79 6,32 2O I 1,69 5,77 V. O X. I 4, 25 5,04 I O 16,35 4, I 7 2O I 7, 95 3, 16 —º- –a–F– A T A B L E for calculating the ANNUAL PRAecession of a Star in R. A. in Time. Argument—The R. A. of the Star in Time. , | Hours - - O + I –– 2 + 3 + 4 + 5 + - - Hours. I 2 - 13 — I4 - 15 — 16 — I 7 — / // // // -: → // —i- / r O || O,Ooo o,346 o,668 O,945 I, I 57 I,29 I 6o Y 2 ||. O,OI I 3.357 ,678 295.3 I, I 63 I , 294. 58 4. 3O23 ,369 ,688 ,961 I, I 69 f,297 56 6 3O35 ,38o ,698 ,969 I, 75 I 53CO 54. 8 3O47 339 I ,708 3977 I, I 8o I, 3O2 52 I O 2O59 24O2 ,718 ,985 I, I86 I , 305 5O I 2 , O70 ,413 ,728 >993 I, I 9 I I, 3O7 48 I4. ,081 2424. ,738 I, OO I I, I 96 I , 3 I O 46 I6 3O93 2435 2747 I,CO.9 I, 2O I I 33 I 2 44. I 8 , Io 5 ,446 3757 I, O I 7 1,2O6 I 33 I 4. 42 2O 's II 7 34-57 ,767 I 2024. I, 2 I I 1,316 4O 22 , I 28 ,468 ,776 I, O3 I 1,216 I,318 38 24. • I 39 ,479 ,786 I 3 O39 I 322 ſ 1,320 || 36 26 2 I 5 I 3490 5795 1,046 I,226 I 5322 34. § 28 , 163 25 OI ,805 I O53 I 323 I I , 32.3 32 || 3: .# | 3O > I 74 25 I 2 ,814 1,060 I,235 I , 325 3O ) # > 32 , I 86 > 522 ,823 1,067 I , 239 I , 327 28 | * 34 > I 97 > 533 ,832 I, O74. Ix244. I,328 || 26 36 ,209 > 543 ,841 1,081 I,248 I 3329 24 38 ,220 2554 3850 1,088 I 3 2 5 2 I,330 22 4.O 2232 ,565 ,859 | 1,095 1,256 I, 33 I | 20 4-2 > 243 ,576 ,868 I, I O I I,260 I 3 332 I 8 4-4. × 255 ,586 ,877 13 Io9 I, 264 I > 333 I 6 46 ,266 2597 ,885 I 3 I I 4. I, 268 I 334 14. 48 ,278 ,607 5894 I , ! 2 I I, 27 I I , 334 - || I 2 5O ,289 ,617 29O2 I, I 27 I,275 I 53.35 I O 52 530 I ,627 39 II I, I 33 1,278 I 2335 8 54 33 l 2 ,638 392d I, I 4.O I, 282 1,336 56 3.323 ,648 >929 1, 146 I, 285 1,336 | 4. t U: 334 ,658 2937 I I 52 I,288 I , 337 2. 6o o,346 o,668 O,945 I, I 57 I, 29 I I, 337 O J - || 1 1 + | 10 + | 9 + | 8 + | 7 -- || 6 + —-mºs Hours - - 23 —- 22 - 2 I - 2O - 19 — 18 — -- * l em-- The number of ſeconds and their decimals taken out of this Table being multiplied by the natural tangent of the Star's Declimation, and applied with their reſpective Sign to + 3",068 will give the Annual Praeceſſion in R. A. If the Star's Declimation be South, the number ſo found muſt be applied with a contrary Sign. PART II. G i. * − D E CIM A L NUM B E R S for multiplying the ANNUAL PRAEcession of a Star in R. A. with their Complements. } —ſ | Decim. Compl. - Decim. Compl. Decim. | Compl. Jan. I. 3C I. 399 May 16. 3.35 ,65 Sept. 4. ,69 23 I 3. 3O2 , 98 . I 9. ,36 ,64 || | 9. 27C 330 6. 3O3 397 22. >37 ,63 I4. 37 I 229 9. >O4. ,96 25. 2.38 ,62 I 9. 37.2 ,28 I 2. »o 5 # 595 28. 239 ,6 I 24. - 373 327 I 5. ,06 2.94. 3 I. 34C ,6o - 29. 74 ,26 - * 3C | > —- . . : º; June 3. 41 259 Oćt. 4. . .75 , 25 || 25. 3C9 39 I 6. 242 ,58 9. ,76 3.24. 28. I O 90 9. 3.43 • 57 | 14. ,77 x 23 } > I 2. 244. ,56 18. ,78 > 22 Feb. 1. 3 II ,89 15. 345 355 7. 23. 379 | , 21 4 • 2 I 2 ,88 18. ,46 254 27. ,8o 52C 8. 2 I 3 ,87 2 I. 347 353 3I. ,8 I 2 I 9 I 2. ; I4. ,86 24. 548 52 Nov. 4. ,82 , 18 I6. , I 5 ,85 27 - || 349 25 I 8 83 , 17 2 I - , I 6 ,84 29. 25 O 35C 1. 3. .6 - º j 3. 25. , I 7 ,83 July 2. 35 I 34.9 I 5. ,85 2 I 5 Mar. 2. , I 8 38.2 5. 352 248 18. ,86 2 I 4. 7. 2 I 9 , 8 I 8. 353 347 2 I . ,87 > I 3 I 2. 3 20 ,8O I I. 3.54 246 24. 388 | . , 12 I7. 32 I 379 I4. 555 245 27. ,89 3 II 22. > 22 578 I 7. , 56 244. 3O. 39Q IO tº 3. y 2O. y 3. 27 23 77 : : : Dec. 3. . .91 o9 Apr. I. 3.24. ,76 27 39 ... 6. 392 so8 6. 25 | 375 36 | 6 || 3 | 9. 393 || >O7 I I. , 26 374 > 2 I 2. 2.94. , ,06 I 5. x 27 373 Aug. 3. ,6 I > 39 I 5. 295 3O5 2O. , 28 37.2 6. ,62 ,38 18. ,96 3O4. 24. 32 37 I Io. ,63 >37 2 I . . , 97 so.3 28. x 3C ,7o I4. 564 ,36 23. 298 so.2 18. 365 235 26. >99 || so I May 2. 3. º 22. ,66 234. 29. Loo |- soo . . . . . 26. 67 || 333 || 31, 1,01 ||--,ol I 2. 234 ,66 3O. < ,68 ! 3.32. | F. § & N. B.—The ſmall ſemi-annual Equation of Praeceſſion is allowed for in this Table. . -* For Decimals of a year, ſee the Table of Multipliers, after the Table for finding the Annual Praeceſſion of a Star || in N. P. D. . \ 3. * * *** ( ; A3 ) . r ; 3. —r- _2 , (IX.) A T A B L E for finding the Annual PRA:cession of a Star in N. P. D. * + } i. * . * , ; ; * Argument—The R. A. of the Star in Time. T- ; : . . . . tº " . t ºf l * | | O - I - 2. ~~ 3 — 4. – s– Hours - - 1 2 + - 1 3 + 14 + 15 + I6 -H 17 –- - - Hours. |= w -* ea-ſh- | } z' // // // { 2, // // /* r o || 20,05 | 19,37 17,36 || 14, 18 || 1 o,92 5, I 9 || 6o N ‘ 2 2O3O4. 1 9932 17,28 14,06 9,87 5,O2 58 : 4 || 20,04 || 19, 27 | 17, 19 13,93 9,72 4,85 || 56 '6 2O,O3 I 9, 22 17, Io 13,80 9, 57 4,68 54 i 8 || 20,03 19, 17 I7,OO 13,67 9, 4 I 455 I 52 : Io 2O,O2 I9, I 2 16,92 I 3, 54. 9, 26 4234 5O 12 || 20,02 I 9,07 16,84 I 3, 4 I 9, IO 4; I 7 48 : | I 4. 2O,OI I 9,02 16,73 I 3, 28 8,95 4-2 CO 46 } % I6 2O,OO 18,96 16,62 I 3, 15 8,79 3,83 44. I 8 I 9,99 18,90 16,52 I 3, O2 8,63 3,66 42 2O I 9,98 I 8,84. 16,42 I 2,89 8,47 3,48 4G 22 19,96 I 8,74 16,32 12,76 8,3 I 3x3 I 38 24. I 9,94. 18,72 16, 22 I 2,62 8, 15 3: I 4 36 26 || 19,92 | 18,66 I 6, 12 I 2,49 7, 99 2,97 34. . 28 I 9,90 I 8,59 I6,ot I 2, 35 7,83 2,79 32 # f 3O I 9,88 || - 18:53 #5-9: I 2, 2. I 7,67 2,62 3O ă ; 32 I 9,85 18,46 15,8o 12, O7 7, 5 I 2,44 28 34 || 19,83 I 8, 39 I 5,69 II, 93 7, 35 2, 27 || 26 36 I 9,80 18,32 I 5,58 II, 79 7, I 9 2,09 24. 38 I 9,77 18, 25 I 5,47 I 1,65 7, O3 1,92 22 4C I 9,74 18, 17 15,36 II, 50 6,86 I 575 2O 4.2 I 9,7 I 18,09 I 5, 2 I 1,36 6,70 1,68 I 8 44. 19,68 I 8,02 I 5; I 3 I I, 2 I 6,53 I , 4-O I 6 46 I 9,65 I 7,94 I 5,02 I 1,07 6,37 I , 23 I 4. 48 I 9,61 17,86 I 4, 9C Io,92 6, 20 I, OS I 2 { 5O I 9, 57 17,78 I 4,78 Io,77 6,03 ,88 I O º 52 I 9, 53 17,70 14,66 . Io,62 5,86, 27 O 8 .* 54 || 19,49 || 17,62 14,54 || Io,47 5,7 O > 53 6 56 || 1945 17,53 || 14,42 | 19,32 5, 53 x 3S 4. 58 || I 9,4 I I 7,45 I 4, 3O Io, 17 5,36 , 18 2 J | 6o I 9,37 17,36 I4, I 8 I Ox O2 5 : T 9 > CO O ºr " I I + I O –– 9 + 8 + 7 -- 6 + | . . H. .* Hours - - 23 — 22 - 2 I - 2O - 19 — 18 — || Hours. |-- - ( 44 ) [AppExprx. DECIMAL PARTS of a Year, with their Complements, for multiplying the ANNUAL E- (X.) * # *-*…* -º-º-º-º-& PRAEcession of a Star in N.P.D.: Applicable to any regular Annual Motion whatſoever. Decim. Compl. Decim. Compl Decim. Compl. Jan. 4. so I | >99 May 1. 233 || 367 Sept. 2. 67 || 233 7. 3O2 ,98 4- 234. ,66 5. ,68 232 II. 3 O3' 397 8. 2.35 ,65 9- ,69 23 I I 5. so4 296 I Is ,36 ,64 I 3. 27 O 53C 18. 3C5 395 IS. 237 ,63 16. 27 I 229 22. ,06 2.94. I 9. 2.38 ,62 2O, 572 ,28 26. yo'ſ 2.93 22. 239 ,61 24. 273 ,27 29. so8 || >92 26. 24O ,6o 27. 574. ,26 Feb. 2. o9 || 9 || | 39. 241 |_259 Oćt. I. .75 | .25 6. , Io || >99 June 2. 242 ,58 5. ,76 3.24. 9• 3 II ,89 6. 243 257 8. 277 x 23 # 3. 2 I 2 ,88 IO. 244. ,56 I 2. ,78 322 16. > I 3 ,87 I 3. 5.45 555 16. 279 32. I 2O. , I4 ,86 17. ,46 554. I9. ,8o 32O 24- || 3 || 5 ,85 2 I • 347 > 53 23. ,8 I 3 I 9 27. , 16 •84 24. ;48 352 27. 582 , I 8 Mar. 3. . , 17 ,83 28. 249 |_25. 5. 3o. ,83 3 I 7 7. , I 8 ,82 July 2. 25o , , 50 Nov. 3. ,84 , 16 I O. ; I 9 ,81 5. 25 I 249 6. ,85 > I 5 I 4 • 22 O ,8o 9. 352 ,48 1c. ,86 3 I 4. 18. , , 2 I 379 I 3. , 53 s 247 I 4. ,87 > I 3 2 I . > 22 ,78 I 6. 554. ,46 I 7. ,88 3 I 2 25. 22 3 377 2O. 255 245 2 . . .89 3 II 29. 3.24. ,76 24. ,56 544. #. 390 3 IC 27. 357 343. 2 ö. 39 I 399 Apr. I. 3.25 375 . .# 242. & 9 *=s*** 5. , 26 274. Dec. 2. 392 ,08 9. 27 273 Aug. 3. 259 24 I 6. 93 so? T 2. ,28 572 7. ,6o 34C 9. 2.94 ,06 16. 32.9 37 I I I a ,61 339 I 3. 395 >O5 20. 3o 37 O I4. ,62 ,38 17. . . .96 || oA. 23. 23 I ,69 18. ,63 337 2O.. }, 297 >O3 27. 3.32. ,68 22. ,64 23 24- ,98 3O2 25. , 65 235 28. 2.99 *O I 29. ,66 234. 31. 1,öo 3OO | XI. G E N E R A L T A B L E S. N. B. Theſe TABLES are intended, for deducing the apparent R. A. and N. P. D. of a Star from its mean poſition; and the figns + are ſet down accordingly. If the mean poſition is to be deduced from an off- ferved or apparent place, the numbers muſt of courſe be applied with a con- trary ſign. .* The mean R. A. and N. P. D. of a Star, being brought up to the day in queſtion, by the reſpective Annual Praeceſſions multiplied by the Tables VIII, and X. its apparent R. A. for that day may be deduced by Tables No. I. II. and III. and its apparent N. P. D. by the Tables A. B. C. and D. * * ~ *--- *—L. A *-, **** ~ * - ** *...* - -a-º-º-º-º: zº- ; = —ºr TA B L E I. For finding the Effeót of ABERRAtion on R. A, is TIME, for Theſe Numbers muſt be multiplied by | 3. | h h * | * h h h h h h h o's me. Long o I 2. l I I 3 || 2 14 || 3 I 5 || 4 16 5 17 S o / // // */ // // // — Jan. o. 9. 9. 54 ||—o,21 1 +| +o, 134— +o,474—| +o,780— -- 1,033– -- 1,2 II- I O, I 9. 4.5 34. I4 - ,O74-H ,269 2 595 ,879 I, IOS | 2O 29. 37 ,608 ,285 ,063 • 392 27 O I ,962 3O. Io. 9. 28 ,777 ,485 — , 16o + , 178 25 O3 3793 Feb. 9. I 9. 20 ,928 ,672 ,369 3O4. I ,289 2599 I 9. 29. l I I,o 5O ,838 ,568 —,258+ ,o68 ,388 Mar. I. I I. 9. 2 I I4.2 1,079 3749 ,470 — , I 58+ ,166 | II . I 8.53 I,2O I I, O93 39 I2 ,668 ,378 — ,006 + 2 I. 28.45 I,223 I, I 73 1 O45 ,845 ,588 ,289 3 I. o. 8. 36 I,2O.9 I 322O I I 49 >995 577.7 ; SO 5 Apr. Io. 18. 28 I, I 60 I, 23O I,216 I, I 23 ,946 ,708 2O. 28. I 9 I, O74. I32C4. I 32.49 I,208 1,087 ,889 3O. I. 8. It o,962 T; I43 I,246 1,262 I, I 96 13042 May 1o. I 8. 2 ,818 I, O5 I I , 294. I 327 9 I,267 1,169 2O. 27. 53 ,648 29 J 9 I, I 23 I,257 1,298 I,259 3O. 2. 7. 4.5 ,465 ,767 I, OO4. I, I 99 I,3O I 1,312 June 9. I 7. 36 , 264 2592 ,878 I, I O9 I, 259 1,325: I 9. 27. 28 > O53 ,396 ,708 ,98o I, I 78 I 33O& . 29. 3. 7. I 9 || + , I 55– , 19 I ,526 ,827 1,069 I,239 July 9. I 7. IO ,361 | + ,o I 9– 2324. ,645 3923 I, I 4. I I 9. 27, 2 ,560 323C 3 I I I ,446 275 O I, Oo3 29. 4. 6.53 2734 ,433 |+ , I O I — , 235 ,556 ,84o Aug. 8. 16.45 ,891 ,624 23 IS so 16 3.345 ,651 I 8. 26. 36 I, O2O ,796 , ; 17 |+ ,203– , 126 24-44 28. 5. 6. 27 I, I 2.2 394.5 57 O4. ,417 | + , 1 Oo– > 225 Sept. 7. I 6. I 9 1,187 I,065 ,871 ,617 ,321 |-|- soo3– I 7. 26. IO I 3 22O 1, 156 I, O I 2 ,8oo 3.532 x 23O 27. 6. 6. 2 I,216 I , 2 I 2 I, I 24. 9958 373 I 345C Oćt. 7. I 5. 5.3 I, 177 I, 23 I I 32O I I O94. 39Q4. ,657 I 7. 25. 44 I, I C I 1,215 I, 244 I, 189 I SO 52 >344 Q 7. 5. 36 > 995 1, 16 I I, 25.2 I , 2.54 I, I68 1,006 Nov. 6. I 5. 27 ,858 I,o 78 I, 2 I 8 I,278 I,252 I , I 37 16. 25. I 8 ,695 ,956 I, I 36 I, 267 Is 294 I 32.39 26. 8. 5. Io 25 17 ,809 I, O 50 1,217 I 3O5 I , 3C I Dec. 6. I 5. I 33 I 7 ,639 ,918 I, I 3 I I , 274. I , 325 16. 24. 53 > I I O 345C ,756 I,OI7 I 32 O2 I 33 I 2 26. 9. 4. 44 || – , Ioo-H ,246 5577 ,868 I 3 I OO I, 257 3 I. 9.40 , 295 2 I 39 3479 ,784 I,036 I 32 I.4. every. Toth Day of the Year, and each Hour of the #’s R. A. the Nat. Secant of the sk’s Declination, .,, , , *. h h h h h h h h f h 9 21 | Io 22 II 23 I 2 O R. A. o ** // Z/ // l // + 1,078—| + ,837— + ,544—| + , 2 I 1– I, I 73 ,982 5723 24. I4. 1,246 I, IO3 ,885 ,608 1,278 I, I 89 I ,O2C) >777 I,27 O I 32.38 I 3-I 2C) ,928 1,226 I,255 I, 196 I,059 I, I 48 1,228 I,227 I, I 42 fo3O I, I 69 1,226 I 32C I r ,885 I,O73 I, I 88 I , 223 •7 I 5 ,948 I, II 7 I,2O9 252 I >792 I , O IO 1, 1 6o 23 I4. ,616 ,875 I, O74. ,098 34.2 I 27 I 6 ,962 — , I 2 T-H > 2. I4. x 534 ,818 234 I } - soo3 + ,334 ,648 x 54.5 ,216 , I 28 ,465 3734 ,420 – o,73+ ,264 3902 ,62o 3.293 3 O 53 I, O45 5792 3492 || - , I 55 + <-º. I, I 48 2.944 ,678 || 36 § I, 232 I,075 ,845 , 560 k- I,273 1,169 ,986 >734. ſ I, 275 1,228 I O 94. , 89 I I, 24. I I, 255 I, I 74 I 3C 2 O I, I 72 I,237 I, 22 2. Ty I 2.2 I,065 1, 188 I, 23O I, I 87 3927 I, IO3 I,2O2 I , 22 O ,762 ,984 I, I 38 1, 2 16 3574. ,836 I 3 O42 I, I 77 ,369 ,665 39 f 5 I 3 l C I ; ,776 249 I s I 74— > I 55 3473 ,760 3.995 395O ,695 ,394 | + , offé– , 266 , 583 ,858 I,096 ,879 ,6o I 3.283 ; OS 3 ,388 5695 1,2O7 I,O35 379 I ,492 || -- . I 59- - , I 84 , 5 I 7 1,288 1, 162 3957 ,686 ,370 - | + ,024— ,317 1,328. I 254 I 3 O9.5 ,860 s569 >237 3 I I O I, 329 I 33 IO I, I 98 I, O IO ,748 244C + , IOO– I 33 I4. I 5322 I, 24. I I O75 ,833 ,538 32O5 ( 48 ) [Appendix. ' --ºf-tº- -º-º-º-e :==== t ******::=eº —w TABLE II. For finding the Effect of NUTATION in R. A. IN TIME, for Theſe Numbers muſt be multiplied by the Natural Tangent of the k’s Declination ſ h h h h h h h h h h h h h h Ö I 2 I I 3 || 2 I4 || 3 I 5 4. 16 —ſ –. // AA 2, A/ // * O. o |—o,6oo--|-o,578+|—o,520-F –o,424+|—o,301--|-o, 155+| o,000 I O > 59C) ,589 255 I 3473 ,363 ,228 — so?8+ t 2O 2564 >583 ,564 3507 24. I4. s293 • I 53 I. O 52O 2.559 ,562 2525 2453 5350 > 223 I O ,460 ,518 254. I , 527 2479 3396 ,287 2O 3.385 —º ,462 2505 25 I 3 ,489 sq-3O 2342 II. O 53C I 239C 24.53 ,485 ,484 245 I ,386 I O , 295 3.307 ,388 244. I ,466 54.57 34-2C 20 |_104 2214 23 IO 2385 |_433 _451 244C III. o SOOO > II 5 > 223 ,316 ,386 2.432 ,446 Io + , to 4– , O I 2 , I 3O 3.237 3.329 > 397 244C) 2C) : 2O5 + , o& 9– 3O32 , I 52 526 I 3352 34.2C TV. O 53C I ,189 + ,oë7– ,062 • I 85 5297 ,386 1 O ,385 , 285 ,163 + ,032– 2 I C4 323 I 2342 2O ,46o ,369 3.254. 3 I 22 so I 9 , I 58 ,287 V. O 252O 2443 3.339 ,208 || + ,067— >OS I 3.223 I O 2564 ,506 ×4 II » 290 3 ISO 3CO I 2 I 53 2O , 590 255 I 3473 ,363 ,228 + ,O78— *. ,078 VI. O ,6oo ,578 352O ,424 3.30 I > I 55 , OOO I Ö 3590 ,589 555 I 3473 ,363 ,228 + , of 8– 2O 564 ,583 ,564 , 507 34 14- 3.293 153. VII. O > 52O 3.559 ,562 > 525 3453 > 35o 3.223 I C) ,460 35 I 8 254 I 2527 2479 3396 ,287 2O ,385 ,462 > 505 3.5 L 3 ,489 > 4-3C 3.342 VIII. O 53C I 339C 34-53 ,485 3484 345 I ,386 I O x 205 3.397 ,388 544. I ,466 34.57 34.2C 2O 3 I C4 32. I4. 2310 ,385 2433 345 I 24-4-O IX. O 3OOO 3 II 5 ; 223 ,316 ,386 24.32 ,446 Io — , I O4-H 3 O I 2 3 I 3O x 237 2329 2,397 344C \ 2O ,2O5 — ,oğ9-H 3O32 > I $2 , 26 I 3352 24.2O X. O 23C I , 189 |— ,off7+ sc62 , 185 , 297 ,386 I O ,385 ,285 , 163 |— ,032-H 2 I C4 , 23 I 3.342 2O ,46o ,369 > 2.54- ; I 2.2 , O I 9 , I 58 ,287 XI. o 352O 34:43 2,339 ,208 || -- ,067 + . ,081 3.223 I O ,564 ,506 34. II , 29O > I 5 O 3OO I 2 I 53 2O 3590 255 I 2473 ,363 ,228 — ,o/8+ ,of 8 * * * * * ; § - - -* “Arrºnix.1º, ( 49 ) , ºr .ºrg: “. ...: ~ --~~~-d -º- F- º, _* T A B L E III. The Eog ATION of the Equinoxes in R. A. IN TIME. every 10° of 5's & and each Hour of ¥'s R. A. which will be-Negative if the Declination be South. h h h h h h h h h h Argument. Long. of )'s Q. 7 I 9 || 8 2O 9 2 I I O 22 I I 23 || // // // // // S O 6 I 7 2. s S +o, I 55— +o,3o I — --o,424— +o,520– +o,578—|| — —H — -H – -- i. ,078 ,228 ,363 3473 255 I O } // // z—- - — ,OO I + 150 , 29O 34 i ! , 506 | o O,OO O, 5.5 o, 95 || 3O so8 I ,067 ,2O8 2339 2443 || I so 2 | >56 295 || 29 , I 58 —O,O I 9-H , I 2.2 > 2.54. ,369 | 2 204 || > 58 , 96 || 28 | _231 3 I C4 3O32 , I 63 285 || || 3 º: * . . . . . i 4. 3 O 3 O I 29 2 O } { 3.297 , 185 — ,of 2+ ,067 , 139 | 3352 , 26 I , I 52 — ,og2+ so89 5 ; , I O ,63 2.99 25 3.397 3.329 x 237 , I 3o – ,OI 2+ | 6 3 II #| º 4. | ^e d 3 I I ,CC) 2 ; 34.32 ,386 ,316 > 223 > II 5 % ; º i.o. : ; 245 I 2433 ,385 33 I O 3.214 || 9 , 17 | 69 | 1,02 21 | >457 ,466 344 I ,388 3.307 16|| || 36||33 ||33 || | 345 I ,484 ,485 2453 3390 I I 2 : 2 I, O I h 34-3C 2489 25 I 3 2505 3462 | I 2 33 # : .# 1396 479 , 527 354 I , 518 | I 3 > 2.5 374 I 3 O4 I 7 235C 5453 > 525 ,562 3539 | I4 , 26 || >76 I,05 | 16 , 293 24. I4. 2597 2564 ,583 || | | 5 || 28 || >77 | 1,05 I 5 ,228 ,363 3473 355 I , 589 I6 23o ,79 | 1,06 | 1.4 x 155 33C I 24.24 352O ,578 17 232 || >8o | 1,06 13 ,078 ,228 ,363 3473 555 I || I 8 || 334 || >8 I | 1,07 | I 2 + ,co I — > I 5 O , 290 54. I I , 506 | 9 , 36 || 382 | 1,07 | I I - }; 2 ; 77 ,8 } | ,O8 I ,oë7 ,2O8 3.339 *443 || O | 37 4 I,08 || 1 O , 58 |+ or 9– 3 I 22 3 2 5 4. 2369 2 I , 39 , 85 | 1,08 || 9 x 23 I 2 I C4 , O32 , I 63 , 285 | 22 || 4 I ,86 I, O3 || 8 3.297 , 185 | + , c62– ,067 , I 89 | | : ;43 , 87 | I, o& 7 Ty ! 4. 344 288 I,09 6 3,397 3.329 237 _, 139 - + ,OI 2– | s 3. 8 5 3. 5 2.432 ~ ,386 ,316 > 223 3 II 5 . º 92 I, O9 4. 8 f 2 I 7 25 292 I 3C9 3 345 I 34-33 , 355 23 I O *...* || | 28 || 3 || 93 | 1,09 || 3 34.57 ,466 344 I. ,388 23°7 || || 29 353 394 | I SO9 I 2451 º: ,485 • 453 §: 3O | >55 95 || || 3 O 9 O 34.30 34.89 25 I 3 25O5 24.02 || I I 4. IO ,396 2479 25.27 3.54. I 35.18 S * –H + + + 3. S 3350 3453 > 525 ,562 3.559 3.293 24 I 4 3507 ,564 >583 ,228 ,363 3473 , 55 I 2589 | PART II. * * º, & 3. … " .* 3: *... ~ * * 3. 3. ** *. 3. Jº * tº tº A . º’s fºr PEN prx, ( 50 ) sº aſ APPENDrx, # ¥ *~4 *** . , * * -- ~~ºa-z ------º-º-º- * ** sº º #}º. * * º º : º == ". F. : AS. Tº e. TA BLE A. For finding the Effect of ABERRAtion on N. P. D. for Theſe Numbers muſt be multiplied by the Nat. Sine of 2 h h h h h h h h h h X. h . h ©'s me. Long: o 12 || 1 13 || 2 14 || 3 15 || 4 16 || 5 - 17 S O / // // // // Af // Jan. o. 9. 9. 54 ||—19,71 +|— 19,85+| — 18,64-H — 16,17-H - I 2,57+| – 8, 14-H I C). I 9. 4.5 18,82 I 9,78 19549. 17,69 i 4,78 Io,86 2O. 29. 37 17,39 I 9, 2 I I 92.59 18,70 16,54 I 3:25 3o. Io. 9. 28 I 52.44 I 7,94. I9,2O I 9, 17 I7,83 I 5, 27 Feb. 9. I 9. 20 I 3,O3 16, 19 18,24. 19,06 I 8,57 16,81 I 9. 29. II IO,25 13,96 16,76 18,37 18,77 17,88 Mar. I. II. 9. 2 7, I 5 II 2.35 I 4,77 y I 7, 19 18, #2 18,4O I I. 18, 53 3,85 8,38 | 12,34 I 5.245 I 7,53 18,39 2 I. 28.45 Os43 5, 16 9, 54. I 3,28 16, O I 7,82 31. O. 8. 36 || + 3,00– I,8O 6,47 IO,7 I I 452. I I b,75 Apr. Io.s I 8. 28 6,34 + 1,60— 3,23 7,82 I I,89 I 5, 17 2C, 28. I 9 93.49 4,98 || + O., 14– 4,69 92.25 I 3, I 2 3O. 1. 8. I I I 2,36 8, 2 I 33.49 I 343 6,31 Io,73 May IO. I 8. 2 14,86 I I, 18 6,75 + 1,83– 3: I 9 8,Ol 2O. 27. 53 16,93 I 3,84. 9,79 5,O7 + O,O2– 53O5 3O; ; 2. 7. 4.5 18, 5 I I6,08 I 2355 8, 18 3, 24. I x9 I June 9. 17. 36 I 92.54. 17,84 I 42.94. I I, O I 6,36 + 1,25– H 9. 27. 28 I 9,97 I 9, Io 16,91 13,56 9,29 4x4C 29. 3. 7. 19 || 19,84 19,76 I 8,35 15,69 I 394 754C July 9. 17. I O I 9, II 19,86 I 9, 25 I 7235 I 452.5 Io, 18 I 9. 27. 2 17,82 19,36 19,60 I 8,48 I6, 13 12,66 29. 4, 6.53 I6,OO I 8,31 19235 I9, IO I 7355 I4,8o Aug. 8. 16.45 I 3,7 O 16,69 I 8,54 I 9, 13 I 8,42 I6,45 I 8. 26. 36 I I, OO 14,60 I 7.32 I 18,62 18,76 17,64. 28. 5. 6. 27 7.99 || 13,07 | 1533 17,35 | 18.36 | 18.3% Sept. 7. 16. I 9 437.2 9, 18 I 3,OI I 5395 17,81 N. 18,45 17. 26. Io 1335 6,04 I O23 I I 3.90 I6,52 I 8,02 27. 6. 6. 1 || – 2,09-H 2,71 723 I II 24.3 14,76 17,08 Oćt. 7. 15.53 5,47 – O,72 + 4,09 8,61 12,54 15,62 17. 25. 44 8,69 43 I 2 O,74. 5,65 9,98 I 3,72 27. 7. 5. 36 I 1,64 7,39 — 2,62+ 2332 7, IO II 24. I Nov. 6. || I 5. 27 I 43.25 IO,45 5,92 – Q,99-H * 4,06 8,73 16. 25. I 8 I 6,44 I 3, 18 9,02 ,26 c,8. I 5,83 26. 8. 5. Ho I 8,15 I 5353 I 1,87 7,36 | – 2,61 +| 2,74 Dec. 6. I 5. I I9, 33 I 7343 I 4,37 IO, 3 I 53.54 || - O,4 I-H 16. 24. 53 I 9,92 I 8,83 16,43 I 2,92 . 8,55 32.57 26. 9. 4. 44 I 92.93 19,64 I8,o I I 5, 16- II, 28 6,62 3I. 9, 40 I 9,73 19,84. 18,61 16,12 I 2.252 7299 every 1oth Day, and each Hour of R. A. of the ‘k. the #'s Declination. If the # be South, the + muſt be changed. | * t -* º - h h h h h - h h h h h h * | * " |R f : 6 18 7 19 || 8 2O | 9 21 | Io 22 || 1 || 23 12 e R.A. of the *. A/ - // ,”/ // —z // // ; — 3, 6–H | + º: + 7, 13–| + 1 1,70—| + 1 5,48—| + 18,22—| + 1 9,71– 6, 20 | – I, 1 1 + 43 O4. 8,92 I 3, 18 I 6,58 I 8,82 9,07 4,26 o,85 5,89 I O,53 I 4,47 I 7, 39 1 1,67 7,29 || – 3.34. 2,65 73.54 II,89 I 5344. I 3592 1 O,O5 5,52 – O,63+ 4.333 8,98 I 3,O3 I 5,75 12,56 8,53 3,89 O299 5,8 I I O,25 17, 13 14,7C I 1,26 7,06 – 2,37+ 2,48 7, I 5 I7399 16,40 13,67 IO,O I 5,66 – O,93+ 3,85 18,34 17,60 I 5,68 12,67 8,8o 4,35 O,43 18, 14 18,3O I 7,21 I 43.93 I 1,65 7, 58 — 3,OO-H I 7,39 18,45 18,23 16,77 I4,2O Io,62 6,34 16, 15 18,06 18,72 18, 12 16,28 I 32.35 9,49 I 434.2 I7, I 3 18,68 I8,94 I 7,9 I I 5,67 I 2,36 I 2,28 1570 18,06 I 9,20 I 9500 I 7,53 I 4,86 9,75 I 3,8 I 16,92 18,88 I 9355 I 8,88 16,93 6,96 II,49 I 5,27 I 8,OO 1995 I 19,67 I 8,5 I 3,95 8,86 I 3, 18 16,60 18,88 I9,89 I9,54 O,8. I 5,96 Io,69 14,69 17.70 19, 5 I I 9,97 + 2,35– 2,86 7,89 I 2,38 I6,o I I 8,56 I 9,84 5,42 | + O,28– 4,85 9,68 13,85 I 7,O5 . i 9, II 8,32 3:45 1,68 6,71 I 1,26 I 5,07 17,82 II, O I 6,51 |-|- 1,54– 32.53 8,35 I 2,58 I6,oo I 3,36 | * 9,36 4,72. O, 23 5, 19 9,77 I 3,7 O I 53.3 I' II 392 7,76 + 3,04– 1,86 6,66 I I, OO 16,83 I4, 18 Io,58 6,25 | + 1,49– 3.36 7,99 17,85 | 16,05 13,05 || 9,25 4,81 + O.O4–| 4,72 18,31 || 17.33 15,17 | 12,06 7,99 3,4-5 I 335 18,25 18, 17 I6,85 14,38 IO,94. 6,75 | + 2,09– 17,64 18,46 I 8,O2 16,35 I 3,57 9,86 5,47 16,53 I 8,22 18,66 17,84. I 5,8 I 12,66 8,69 I 4,92 I7343 18,75 18,8o I7,55 I 5309 I 1,64 I 2,87 16, II 18,27 I 9, 18 18,78 I 7, 1 O I 4, 25 =– IO,43 I 4,33 I 7,26 I 9,CO I 924.4- I 8,59 16,44 7,7 O I 1,97 || 15274 18,28 I 9,58 1935 2. I 8, 15 45.74 . 9359 I 3,78 I 7,OI I 9, Io I 9,89 I 92.33 1,64 6,73 II, 38 I 5,25 18,06 19,66 19992 — 1,5 I + 3,70 8,66 I 3,O3 16,52 I 8,88 I9,93 3,08 23 I-3. 7, 20 | 1 1,76 15,53 | 18.25 I 9,73 H 2. ~ * $ * * * & “, # * } * ~$ ſº A. º * x; . . [APPENDIxº. ~ * w. * c. * ** **, * . k Y-. zº- * * * ... x+. - FTº **, 3 ** ** *. Fºr ºn → TA B L E B. For finding the farther Effett of Aberration on’ * : * Argument. . o’s Long.’ . sk’s Decl. O IO Q O 3o 4.O // // Z/ // // Jan. O. + 1,37 + 1,35 + 1,28 + 1, 18 + 1,04 I O. 2,69 2,65 2,53 2333 2,O6 2O. 3-94 3,88 3,70 334 I 3. O2 3O. 5507 4,99 4,77 4, 39 3,88 Feb. 9. 6,05 5595 5,69 5, 24 4,64 I 9, 6,85 6,74 6,44 5392 55.24. Mar. I. 7:44 7532 6 99 6,43 5,69 I I , 7,82 7,70 7235 6,77 5399 2 I. 7,96 7,84. 7,48 6,89 6, Io 3 I. 7,87 7,75 7, 4 I 6,8 I 6,02 Apr. I O. 7,56 7244. 7, I I | “6,55 5,79 2O. 7,O2 6,90 6,60 6,08 5,38 3O. 6,26 6, 16 5,88 § 34-2 4,79 May 1o. 5334 5,26 5,O2 4,62 4,08 2C. 4,23 4, 16 3597 3,66 3,24 3O. 3,OI 2,96 2,83 2,60 2,39. June 9. 1,72 1,69 1,61 I,48 F;3 I I 9. O335 O234. O,33 23O 327 29. – I,02 — I,OO - O,95 — ,89 — ,78 July 9. 2,36 2232 2322 23C4. I,80 I9. 3,62 3,56 334-O 3, I 3 2,77 29- 4,78 4,7C 4x49 43 I 4 3,66 Aug. 8. 5,8 I 5,72 5,46 5:303 4x45 I 8. 6,64 6,54 6,24 5575 5,08 28. 723 I ,2O 6,87 6,32 5,59 Sept. 7. 7,75 7,63 7,28 6,71 5,93 17. 7394. 7,82 7,46 6,87 6,08 27. 7392 7,80 7,44. 6,85 6,06 Oćt. 7. 7,66 73.54 7, 20 6,63 5,86 17. 7, 18 7,O7 6,75 6,21 5249 27. 6,47 6,37 6,08 5,60 45.95 Nov. 6. 5,60 535 I 5,26 4,85 4229 16. 45.53 4,46 4, 25 329 I 3,46 26. 33.34. 3, 29 3, 14. 2,89 2,56 Dec. 6. 2,06 23O2. I 393 I,78 I, 58 16. o,72. o,7 I o,67 ,62 255 26. + O,66 + o,65 + o,62 + ,57 - >50 3 I. J234. I, 32 I,26 1,16 I 3O2 -*. * * *Mr. 2-# APPENDux.]] +: 3- ** * ~~~ s …” ... º. * z- 3: A--- (* - sº - “. :-- the N. P. D. of a Star for every 1oth Day, and every 10° 3. .# --> º mº- ( 53 ) #". 3: **, * : * # + Star’s Decl. of Star's Decl. Q O O O G 5o 6o 7 o 8O 90 // */ > // zz z/ ſ --~~ --- or 87 + o,68 + o,46 + O,23 O,OO -i 374. * I 33.5 392 ,46 *2353 I,97 I , 34. ,67 3, 25 2,54. I 373 ,86 3,88 3,O3 2,06 I5OJ 4x4C) 3,43 2333 1, 17 4,77 3,72. 2,54 I,28 5,OI 329 I 2,67 I 334 5, II 3,98 2,7 I I,37 O,OO * 5,06 3394 2,69 I 335 4,88 3,78 2,58 I 33C 45.53 3, 5 I 2,4C I 32 E 4-xO I 3, I 3 2, I4. I,08 3,43 2,67 1,83 392. 2,7 I 23 I 2 I 345 373 I 594 I, 5 I I 5C3 352 ,86 259 23C > 1 7 > I 2 soé O,OO — ,5 I - >35 — , 17 O,OO ! I, 5 I I, i 8 ,8 I 34. I 2232 I,81 I 323 ,63 3,O7 2,39 1,64 ,83 3373 2,91 I,98 I 3 OO 4,26 3232 2,27 I I 4. 4x7O 3,60 235 O I,26 4.299 3,88 2,66 I 235 5, II 3,97 2,72 I,38 O3OO 5399 3,96 2,7 I I 337 | 4.92 3,83 2,62 I 233 4,69 3,59 2,45 I 325 4, 16. 3, 24. 232 I 1 5 I 2. 3359 2,80 I 39 I 397 2,89 2,26 I 3.54 ,78 23. I 5 1,67 I I 4. ,58 I 332 I XC 3 37 I { 236 346 ,36 3.25 3 l 2. + 342 + 233 + , 22 + 3 II O3OO r ,86 ,67 ,46 323 't. * [Appenbrz, * * * *ś *- *** * : * ** : *, , c. * : « 3S wr. J& t..... *. *u. --- š . - T E +++ - #. * Y. # **: * *. * * *. - N. ** * P- * * > *. * … !|-* | riºr +& º, -> *; TA B L E C. For finding the SEMIANNUAL Solar EqyATION in N. P. D. - h A h º h h h h h h h 9 * * *| o 12 || 1 || 3 || 2 14 || 3 15 || 4 | 16 || 5 17 S o ' // // . zz `/ y/ / Jan. o. 6. 19. 48 || —o, 16+| —o,04+ +o,08– +o,20– +o,31–| +o,40– IO, 7. 9. 3O 33 I ,2O – ,08-- ,04 || " , 16 327 2O. 29. I4. 242 234. 32. — , ; 2 + 3OO > I 2 3o. 8. 18. 56 24-7 343 237 ,27 — , 16-H | – ,o4+ Feb. 9. 9. 8. 4o 547 348 345 34O 23 I 32O I 9. Q 2. 22. 342. 246 ,48 ,46 342. 3.34. Mar. I. Io. 18. 4 232 34. I 54-5 348 347 342. II. I I. 7. 46 , 18 >3C > 39 344 ,48 247 2 I . 27. 30 2O2 3 14- ,26 ,36 343 34-7 3 I. o. 17. I 2 || + , 14— -H ,o I – 3 I I 32.3 233 34. I Apr. Io. I. 6. 56 ,28 3 I 7 + ,o 5– 3C7 | 3 J 9 3,3C 2O. 26. 38 34-O 23 I 32 I +,O8— 3O3 ,16 3O. 2. 16. 22 ,46 242 234. 3.24. + , 13– 3OO May 1o. 3. 6. 4 348 24-7 343 237 327 2O. 25.46 343 247 348 245 34C 3O. 4. I 5. 3O 334 24.2 246 348 ,46 June 9. 5. 5. I 2 32O 23 I 34C 345 348 I9. 24. 56 3O4. , 16 227 237, 243 29. 6. 14.38 || – , 12+ 2OO 2 I 2 3.24. 234. July 9. 7. 4. 20 ,27 | — , 15+| – 303+ 3C9 3 T 9 I9. 24. 4. 34C 33O 32O — ,O′7+ 3O4. 29. 8, 13. 46 ,46 342. 233 323 – 21 I-H |_ Aug. 8. 9: 3. 3O ,48 347 343 ,36 , 26 — , I 5+ I 8. 23. I 2 244. 247 348 544. 239 3.29 28. Io. 12. 54. 3.35 342. ,46 ,48 ,46 94.2 Sept. 7. II. 2, 38 > 22 232 34. I 345 248 347 17. 22. 2C ,06 ,18 23 O 539 344- 348 27. o. 1 2. 2 || + , Io- 2O2 2 I 4. , 26 ,36 343 Oćt. 7. I. I. 46 3.25 +, 13–1 + ,o 1–1 ,1 1 223 233 17. 2 I. 28 337 227 , 16 + ,O4— ,o? 32C 27. 2. I I • I 2 245 54C 33 i ,2O | + ,08–| " ,04 Nov. 6. 3. O. 54 348 ,46 242 334 324 || -- , ; 2– 16. 2O. 36 545 ,48 347 24-3 * >37 327 26. 4. Io. 20 237 343 347 348 245 34C Dec. 6. 5. C. 2 3.24. 234. 242 ,46 348 ,46 16. 19.46 ,08 32O 23 I 34C 345 ,48 ** 26. 6. 9. 28 || — ,08 : 3O4. , 16 527 237 343 3I. I 9. 20 , 16 — ,O4-H ,08 52G 33 I 34 O | **. “, § #. APPENDº! . º 3+ * sº % ~" *~. -- * à. ( 55 . ) -ºr £ for every 10th Day, and every Hour of R. A. of the Star. -ºš s r. h h h h h h h h h h h | h h 6 18 || 7 19 || 8 20 || 9 21 | 10 22 || 11 23 12 o |***** // *y A/ , - // // A/ // // # **.*. | +o,45- +o,48–| +o,47— +o,43–| +o,37— +o,27—| +o, 16– 237. ~ 343 247 ,48 345 24O 23 I 224 234. 242 246 248 ,46 242 ,08 32O 24. I 34C 245 248 247 — ,O8+ sC4. ,16 327 237 243 347 3.24. – , I 2 + 2CO 2 I 2 3.24. 234. 24.2 236 ,25 | — , I 5 + | – so 3-H ,09 223 23 I 244. 238 529 , 18 — ,06–H ,06 , I 8 348 345 24. I 232 322 — , IO-H- r 2O3 ,46 348 ,46 242 235 225 — , 14-H 239 345 ,48 34-7 34.4 ,38 328 ,26 237 343 547 ,48 345 34-O 3 II 3.24. 234. 342. ,46 348 246 + ,o 5– ,08 > I 9 23 I 34C 345 ,48 32O + ,08– 3O4. , 16 227 3.37 243 234. , 24 | + , I 2– 3OO > I 2 •24 h >34 243 237 527 + ,16–1 + ,04– 2O8 * 32 O ,48 345 34 O 23 I 22 O + 3O8— 3O4 ,46 ,48 ,46 242 234. 24 |+ , 12- 54C 345 ,48 347 243 237 327 328 337 343 347 343 345 34-O > I 3 3.24. 534 34-2 ,46 348 346 – so 3–H >O9 322 334 34. I 345 347 , I 8 ? —,07– O,5 > I 7 328 238 244 233 223 - , 1 I + >O I 3 I4. 32 235 342. ,36 , 26 — , t 5 +| – ,o 3 + 3C9 32. I 347 244. ,38 329 ; : 8 sº soó-H ,06 547 ,48 245 34. I 232 52.2 – 2 IO-H- 242 ,46 348 ,46 3.42 3.35 225 231 34C 345 ,48 24-7 243 237 , 16 327 3.37 343 24-7 248 54.5 3OO , I 2 3.24. 334 242 s46 248 + , I 6–| + ,04– ,O8 >2O ×3 I 34C 545 >3 I 32O + 3O8 — - >O4. , 16 32. 237 342. 334 224 + , t 2– 3OO > I 2 224 247 343 337 ,27 | + , 16–) + ,04– ,08 247 348 245 34C 53 I ,2O | + ,o8– 345 348 247 343 237 22 , 16 ºr & 3. * * * * * <, 3. w ** *A* rº-- * *: * -- *. * * º * **. Yº, §§§ * * * * Tºšº ºx º <^ - 㺠Píº º *— x * •&- **. z- * º $ .* *º- * *** * * •- ---- -ºs---sºmºseº ----------- - - * * * * * *-** - - --~ *s-, - 2 1. *. -º- *** *s #: ~x. i- * F. - ~~ x “r-----, ** * *> TABLE D. For finding the Effe&t of Nutation on the N. P. D. Argº. h h h h h h h h h h . h h Long, of ) &. o I 2 I 13 2. I4. 3 I 5 4 16 5 17 S O // // JºA // q // * * // * ~. O. O O,OO – 2,33 + | — 4,51 + | — 6,36 + | — 7,8o + | – 8,69 + I O + 1, 16 — I, I 7 3,42 5344 7,09 . 8,26 . 2O 2529 + O,O2 — 2324. 4,36 6, 18 7,58 I. O 3235 . I, 22 I ,OO 3: I 4. 5,08 6,66 I O . 43.3 I 2,38 + o,28 — I,83 3 8 I 53.54 2O 5, 13 3,46 I 355 o,47 23.44. 4,26 II. o 5,8o 4x44. 2.78 + O,92 — I,OO - 2,84. I O 6,30 5,28 3592 2,28 + o,48– I 234. QO 6,60 5,96 4.293 3,56 I 594. + O, I 9 – III. O 6,70 6,47 - 5,8o: 4374- }. 33.35 I 573 IO . 6,60 6,76 6,50 5,77 4,66 33.22. 2O 6,30 6,86 6,99 6,62 5,8 I 4,60 IV. O 5,80 6,77 7,27 – ºr 7,28 6,80 5,85 I O 5, I 3 6,45 7334 7,70 | 7,58 6,92 2O 4- 3 I 5594. 7, 18 7,90 || 8, 12 7,77 V. O 3,35 5,25 6,80 || 7,88 8,43 8,39 I O 2329 4x4C 6,21 7,60 8,47 8,74 2O I, I 6 3,4-2 5,44. 7,09 8,26 8,84. VI. o G,OO 2,33 4, 5 I 6,36 7,80 8,69 I O —I, 16 + 1, 17 3242 5.244. 7,09 8, 26 2O 2,29 - O,O2 + 2, 24. 4,36 6, 18 rx's 7,58 VII. O 3,35 I 32.2 1,00 3, 14 5,08 || 6,66 I C) 43.3 I 2,38 — O,28 –H 1,83 3,3 I 53.54 2O 53 I 3 3,46 I 355 O,47 2,44 4,26 VIII. O 5,80 4x44. 2,78 — O,92 + I, CO 2,84 IO 6,30 5,28 3,92 2,28 – O,48 –H I334 2O 6,60 5,96 43.93 3,56 I, 94. —o, 19 + IX. O 6,70 6,47 5,8o 4,74 3.35 I 373 IO 6,60 6,76 6,50 , ſ 5,77 4,66 3,22 2O 6,30 6,86 6,99 6,62 5,81 4,60 X. o 5,8o 6,77 7,27 7,28 6,80 5,85 Io 5, 13 6,45 7334 7,70 7, 58 6,92 2O 43.3 I 5594 7, 18 7,90 8, I 2 7,77 XI. o 3,35 5,25 6,80 7,88 8,43 8,39 I O 2329 4x4C 6,2 I 7,60 8,47 8,74 2O I, I6 3:42 5,44 ; 7,99 8,26 8,84. º Appendix.] ( 57 ) amºn- --- for every 10° of y's Q and every Hour of k's R. A. * -*** h h h h h h h h h h h h h h I 8 7 I 9 8 20 9 2 I I O 22 I I 23 F2 C // &/ ! // // sº // // // — 9,oo + | — 8,69 + | — 7,8o + j — 6,36 + - 4,51 + | – 2,33 + O,OO 8,86 8,84. 8,26 7,09 524-4 3,42 – 1,16 + 8,46 8,74 8,47 7,60 6,2 I 4x4C 2329 7,8o 8,39 8,43 7,88 6,80 5,25 3,35 6,89 7,77 8, 12 |- 7,90 7, 18 5.94 423 H 5,79 6,92 7,58 7,70 7,34. 6,45 5, I 3 435 I 5,85 6,80 7,28 7,27 6,77 5,8o 3,O7 4,60 5,81 6,62 6,99 6,86 6,30 I,56 3, 22 4,66 5,77 6,50 6,76 6,60 O,OO I,73 3,35 4,74 5,80 6,47 6,70 + 1,56– O, I 9 1994 || 3,56 4.293 5,96 6,6d 3,O7 + I, 34 — o,48 2,28 3392 5,28 6,30 4. 5 I 2,84 + I,OO – O,92 2,78 424.4 5,80 5,79 4,26 2544 + O.47 — I 355 3,46 5, I 3 6,89 5,54. 3,8 I I,83 o,28 2,38 423 I 7,80 6,66 5,08 33 I 4. + I,OO – I 322 3,35 8,46 7,58 6, 18 4,36 | 2,24 O,O2 2,29 8,86 8,26 7,09 5244. 3242 + 1, 17 — I, 16 9,CO 8,69 7,80 6,36 | 435 I 2,33 O,OO 8,86 8,84. 8,26 7,09 5,44. 3:42 + 1, 16 — ? 8,46 8,74 8,47 7,60 6,2 I 434C 2,29 7,80 8,39 8,43 7,88 6,80 5,25 32.35 6,89 7,77 8, 12 7,90 7, 18 5394. 423 I 5,79 6,92 7,58 7,7O 7234. 6,45 5, I 3 4, 5 I 5,85 6,80 7,28 7,27 6,77 5,8o 3,07 4,60 5,81 6,62 6,99 6,86 6,30 I, 56 3,22 4,66 5,77 6,50 6,76 6,60 O,OO I 373 32.35 4,74 5,80 6,47 6,70 | – 1,56 + O, I 9 I,94 3,56 4.293 5,96 6,66 3,07 — 1,34 + O,48 2,28 3592 5,28 6,30 435 I 2,84. — I, oo + l O,92 2,78 | 4x44. 5,8o 5,79 4,26 2,44. - O,47 -H j I, 55 3,46 5, I 3 6,89 5x54 3,8 I I,83 O,28 2,38 4-93 I 7,80 6,66 5,C8 3, 14. - 1,00 + | I 32.2 3,35 8,46 7,58 6, 18 4,36 2,24 H O3O2 2,29 8,86 8,26 7,09 5.244. 3:42 – 1, 17 —- I, 16 -*. -— PART II. 59, A P P E N D I X. PART II. CoNTAINING SUNDRY INSTRUCTIONS AND TABLES, WHICH THE AUTHOR A PPR EHENDS MAY BE FOUND OF USE TO THOSE WHO FEEL THEM- SELVES TO STAND IN NEED OF THE M. f * I. EMORANDA for ſuch perſons as are not much verſed in the uſe of the Tables of Logarithmic Sines, Tangents, and Secants. 2. A Table for the Redućtion of Hours and Minutes into Seconds : With the Logarithms of the Seconds in I. 3. 6. 12. and 24 Hours. 3. Dr. Maſkelyne's Table of Refractions; with two additional columns of the Correótions to be applied for a difference of 1 inch in the Baro- meter, and 1 o’ in the Thermometer. 4. The Method of calculating the Meridian Paſſage of a Star in Mean Solar Time: Together with a ſhort explanation of the Equation of Time. 5. A Table of the Acceleration of the Stars on Mean Solar Time. 6. The Mean RA of ſome Principal Stars, and the Mean RA of the Sun each day in the Year; whereby in a rough way to compute when to expect each of thoſe Stars on the Meridian. 7. A Formula for computing the effect of the change in the Sun's Decli- nation on a Meridian deduced from correſponding Azimuths, ob- ſerved when the Sun is at equal Altitudes before and after noon. I 2 8. 9. Formulae 6o Appe Nišix. 8. 9. Formulae for calculating Time or Azimuth from an obſerved Zenith Diſtance of the Sun or a known Star. ºr x Io. 1 1. Two ways of deducing a Meridian from the Pole Star. 12. Formula for correcting the Error of a Meridian Teleſcope, by the ob- ſervation of any Circumpolar Star above and below the Pole. 13. Formula for the Correćtion of a Meridian Teleſcope, by the obſervation . of two Stars differing confiderably in Polar Diſtance. 14. How to deduce the Longitude of any Station from the Meridian Paſ- ſage of the Moon. - 15. A Table for finding the Time that the Semidiameter of the Moon takes in paſſing the Meridian. • 5 16. A Table of the time that I 5” of a great circle take in paſſing the Meridian at different degrees of Polar Diſtance. * 17. How, by Azimuth, Altitude, and Time, to obſerve the exačt place of any Object, and deduce its RA and PD. 18. Correótions to be made to the General Aſtronomical Catalogues of the Author; diſcovered ſince the publication, in addition to thoſe pointed out at the end of that volume. . *A*P P.E.N.D IX. , 6 I f * p .* -- *º-º: mºs º mºsºsºm-º: º r- s:== iº. º -*s * ºr g-—wer-y: 3r ;:ºr-º- --~~~~ vºy r—w-ār--ºr--ºr- *. ** * * ( 1.) MEMORAND A For such PER sons As ARE NOT MU ch VERSED IN THE USE OF THE TABLES OF LOG ARITHMIC SINES, TANG ENTS, AND SE CAN TS. IT ſcarcely need be ſaid, that the Radius, and all which are juſt equal to R. have the Index Io, without any fraćtions. The Sines, Tangents, and Secants of 45" are the ſame as the Coſ. Cot. and Coſec. of 45. From o' to 45°, the Sines, &c. are to be taken out of the Tables, di- rečtly as they ſtand. From 45° to 90°, the Sines, &c. are the Sines, &c. of the Complements of thoſe Degrees to 9o ; or the Coſ. &c. of the firſt half, reckoned back- ward. From 90° to 180°, the Sines, Tangents, and Secants are all reverſed; the Sines, &c. beyond 90° being the Sines, &c. of their Supplement to 180°, or the Coſ. &c. of the former Quadrant. $ Thus, the Sines, &c. of 45° are the Coſ. &c. of 45°. the Sines, &c. of 46 - - the Coſ. &c. of 44. the Sines, &c. of 91 - - the Coſ. &c. of 1. the Sines, &c. of 136 - - the Sines, &c. of 44. Where the Logarithmic Tables give only the Sines and Tangents, they ſtill will ſerve for Secants, thus: The Log. Secant is = the Arithmetical Complement of the Log. Coſ. + Index Io. The Log. Coſec. is = the Arith. Comp. of the L. Sine + Index Io. It ſhould be obſerved, that in the uſe of all theſe Logarithms, where you are direéted to ſubtract any one, you may, if you find it more convenient, add its Arith. Comp. in its ſtead. This §. .# * * 4. .** * * *A wº- 6 *. T. * -3. <3 * * 2. P.P.E.N.D. Iºk: . . *, * & ºw A.P.P.E.N.D. Iºk; -r * ~ - & N ": a * This may ſuffice here. If a more accurate knowledge of the Tables-be defired, I would refer to Dr. Hutton's Hiſtory of them prefixed to his Ma- thematical Tables; or to the Explanation given by the preſent Aſtronomer Royal in the Hntrodućtion to Taylor's Logarithmic Täbles ; which being given to every Second of the Quadrant, may ſtrongly be recommended àS ſaving much trouble to thoſe who have a great deal of calculation to perform. - • * * *~ Y: * * * an # ~, * k h \ * ; *; * * & 4 * * *-*.** ** º: !. y. * $ , ~. º -f º + * *- & } *-- ~}- ~. 4- \ A PP E N DIX. A T A B L E for the REDUctron of Hours and MINUTEs into (2.) ,--~~ LoGARITHMs of the Seconds in I. 3. 6. 12. and 24 Hours, with their Arithmetical Com- Seconds. *** plements. -T-I- A // /// // h // Logarithms. Arithm. Compl. I 6o 36oo 1860 2 I 2C) 7200 I 92O * I 36OO 3.556.3025 6.4436975 3 18O Io8oo 198o 8 r) 8 c.o.66:76 4. 24O I44OO 2O4O 3 IO 3 OO 4.O33423 5.966 5762 5 3OO I8ooo 2 I OO 6 216oo 4.3344538 5.665.5462 6 36o 216oo 216o I2 432Oo 4.6354837 5-3645 163 42O 2 & 2CO 222 O § 48O #: 228o 24. 864.oo 4.9365 137 5.off 34863 9 54O 324OO 234.O IO 6oo 36ooo 24OO —sº- e. –sº- II 66o 39600 2460 I 2 720 432OO || 252O This Table is given merely to facilitate a proportionate I 3 78o 468oo 258o Calculation, in caſes to which neither the Logiſtic nor the I4. 84o 5O4OO 2640 Proportional Logarithmic Tables extend. I5 9oo 54OOO 27oo I6 96o 576.00 2760 17 IO2O || 6 || 200 282O I 8 || IO3o 648oo 288o I9 I I 4o 68400 294O 2O | 12OO | 72Ooo 3ooo h 2 I | 126o 756,oo 3060 22 I 32O 7920O 3 I2O 23 138o 828oo 318O 24. I 44 O 864oo 3.24.O 25 I 5oo ^ 33OO 26 1560 3360 27 | 162o 34-2C 28 168o 348O 29 I 74O 354O 3o 18oo 36Oo 64 t A PP END Ix. - -* -* r *- … • *, * - 7~~~ x-zz---> * *re-ºesº -------w - - *º- - "- ~r wr-F º -*- Dr. MA ske i v N E's T A B L E of RE FRA CT I O N S : Adapted to Bar. 29.6 and Therm, 50°. . . . ------------- -*— -- - - - . . . . . . . . | SU N’s Z.HD, Refr. "in ". Z.D.) Refr. | "...i. tº. Z.D. Refr. *i. 'y. †. º + T – TTL | – || | T +TITZD. - o / // A/ // / // //, // . O / // // | ºr . . o // | 1 |o. 1,0 o,93 o,02 || 31 |o.34,2| I, 14 o,86 || 6 | | 1.42,5| 3,42 2,56 || 3 || o,4 | 2 2,O o,06 ,o 5 || 32 35,6| 1, 19 ,89 || 62 | 1.46,8| 3,56 2,67 || 6 O,9 | ! 3 3,O } O, IO >O7 || 33 37,0 | 1,23 392 || 63 | 1. 51,5| 3,72 2,79 || 9 || 1.4 | 4 || 4,O > I 3 , Io || 34 || 38,4 || 1,28 . .36 || 64 I. 56,4| 3,88 2,91 || 12 | 1,8 | 5 || 53°. 3" | ** || 35 | 39.9 || 333 || 99 65 2. 1,7| 4,06 || 3,04 || 15 2,3 | : 6 6,o ,2O , I 5 || 36 41,4| 1,38 | 1,03 || 66 2. 7,4| 4, 18-| 3, 18 || 18 || 2,7 | 7 || 7,o 23 , 17 ||37 || 42,9| 1,43 | 1,06 || 67 || 2. 13,6| 4:45 3,34 || 2 | | 3, 1 | 8 8,O , 26 ,2O || 38 44,5 | 1.48 1, 11 || 68 2. 20,3| 4,68 3,51 || 24 3,6 | 9 9,0 | 3o 22 || 39 || 46, 1953 -1, I 5 || 69 2, 27,5| 4,92 || 3,69 || 27 | 4,O I O I O,O 233 225 || 4o 47,8 1,59 1, 19 || 70 2. 35.5 5, 18 3,89 || 3o || 4,4 | I I I I, I 237 28 || 4 || || 49,5 I,65 1,24 || 7 || || 2.44,3| 5,48. 4, 13 || 33 || 4,8 I 2 I 2, I 34C , 30 || 42 51,3 1971 1,28 || 72 2. 53,9| 5,71 4,35 || 36 5,2 | 13 | 13, I 243 33 || 43 53, I | 1977 | 1.32 || 73 ||3. 4,7| 6,02 || 4,62 || 39 5,5 | 1 4 | I 452 24-7 3.35 || 44 55,0 | 1,83 | 1,37 || 74 |3. 16,7| 6,51 4,92 || 42 5,9 1 5 I 5, 3 } 25O ,38 || 45 56,9 1,89 1,42 || 75 |3. 3O,2| 7,OI 5,25 || 45 || 6, 2 16 | 16,3 354 || 4 || || 46 58,9 | 1,96 || 1,47 || 76 |3. 45,5| 7,52 5,64 || 48 || 6,5 I7 17,4 || >58 ,43 || 47 | 1. 1,O 2,03 | 1, 52 || 77 |4, 3,9| 8,93 6,07 || 5 || || 6,8 18 18,5 ,62 ,46 || 48 || I. 3,2 2, Io 1,58 || 78 4, 23,2| 8,74 || 6,58 || 54 7, I 19 | 19,6 || 65 49 || 49 I. 5,4| 2, 18 1,63 || 79 |4. 46,8| 9,53 7,37 || 57 7,4 2O || 2 O,7 ,69 ,52 || 5o I. 7,8 2,26 1,69 || 8o 5. I4,8| Io,05 || 7,97 || 6o 7,6 2 21,9 | 73 ,55 || 5 | | 1.10.2 2,34 | 1.75 || 8 || || 5.48,4| 1 1,61 | 8,71 || 63 || 7,8 22 23,O 377 ,57 || 52 | 1.12,8 2,43 1,82 || 82 |6. 29,5| 12,09 9,76 || 66 || 8,0 23 24, 2 ,81 ,6o || 53 | 1. I 5,5 2, 5 I | 1,89 || 83 |7. 20,9| 14,07 || 1 1,02 || 69 || 8,2 | 24. 2554. ,85 ,63 || 54 I. 18,3 2,61 | 1,96 || 84 |8. 26,4|16,09 | 12,66 || 72 8,4 25 26,6 ,89 ,66 || 55 | 1.21,2 2,71 2,93 || 85 |9. 52,5| 19.70 | 16,81 || 75 8,5 26 7,8 ,93 ,69 || 56 | 1.24,3| 2,81 2, 1 I | | | | || 78 8,6 27 29, O . 397 272 || 57 | 1.27.5 2,92 2, 19 | || 8 || || 8,7 28 || 30,3 | 1,01 || 76 || 58 | 1.31,O || 3:03 || 2,27 - || 84 || 8,7 29 || 3 |,6 1,05 ,79 || 59 | 1.34,6 3, 15 || 2,36 ~ || t | | | | || 87 || 8,8 3O | 32,9 I,09 ,82 || 6o | 1.38,4| 3,28 || 2,46 || | . . . . . . 9o 8,8 This Table of Refractions is copied from Dr. Maſkelyne's No. XXII.; to which two more columns have been added (ſimilar to thoſe given by Mayer) to ſhew the Variations of the Refračtion-upon a difference of 1 inch origin the Barometer, and 10 degrees in the Thermometer. They were calculated upon the Formula given in the Requiſite Tables to the Nautical Almanac publiſhed 1767, p. 49. e As 360 : Diff. of Bar. - from 29,6:: Refr, found: Diff, ſought 4oo: Diff. of Therm. from 5o :: Refr. found: Diff, ſought: Therefore, Refr. found - by 3o = Correótion ſought for Bär. • . Refr. found -- by 4o = Corr. for Therm. . . - - - .-- Theſe are the Quantities ſet down in their reſpective Columns. Dr. Maſkelyne has given a more enlarged Table in the laſt Number of his Obſervations for 1797 to every 1o of Zenith Diſtance, from which the Refračtions themſelves may be taken with leſs trouble. But it did not appear to me right to aſk leave to reprint that ſo ſoon after its firſt publication. - -* -*. App fin Dr K. - 65 - ... ---------------- (4.) o N THE MET H OD OF CAL CULATING T H E M ER I. D I A N P A S S A G E O F A S T A R IN M E A N S O E. A. R. TIME; TO GETHER WITH A SHORT EXPLAN AT I ON OF THE E QUATION OF TIME. THIS may be thought unneceſſary to be ſtated here. But profeſſed Aſtronomers ſhould remember, that this latter part is not intended for them; and there are ſome niceties in relation to the reduction of time, of which all perſons are not aware. - The Star's Me. RA muſt firſt be brought up to the beginning of the current year; and the proper Correótions be applied to it; either from Tables I. II. and III. if it be one of Dr. Maſkelyne's Catalogue; or from the General Tables, Nº I. II, and III, ; to bring it to the exact apparent RA for the day in queſtion. - / - From this muſt be ſubtracted the Sun's RA at the preceding noon, as given in the Nautical Almanac; but increaſed or diminiſhed by a propor- tional part of its daily motion, according as the Long, of the ſtation is Weſt or Eaſt of Greenwich. From the Time thus obtained, muſt be ſubtracted the Acceleration of the Stars, or Sidereal, on Me. Sol, Time, for that Hour and Minute, taken from the Table next following, Laſtly, to the whole, muſt be applied the Equation of Time, at preced- ing noon, according to its fign, as given in the Naut. Alm. But this muſt likewiſe be increaſed or diminiſhed in proportion of the difference of Lon- gitude to the difference of Equation in the preceding or ſubſequent 24 hours, as before was done in reſpect of the Sun's RA. - PART II. K. Thus 66 A PP E N.D.I.x. Thus will you obtain the Star's Mer. Paſſage in Me. Sol. Time correół: by a compariſon of which with its obſerved paſſage, you will deduce the error of your Cºgnometer. - - If you only want in a rough way to find when to expect one of the principal ſtars on the Meridian, the Table, N° 6, will give it with much leſs trouble, by dedućting the Me. RA of the Sun from the Me. RA of the Star fimply. In this way you will ſeldom deviate a minute from the truth, and moſtly before the preciſe time ; which may be calculated after- wards ad rigorem, if you ſucceed in the obſervation of its paſſage. t A Card with a Copy of Nº. 6, kept in the pocket, is often convenient (if you have not a Sidereal Watch) for knowing when any of thoſe ſtars is on the Meridian ; or nearly what hour of fidereal time it is, by adding the Sun's RA at Noon to the Time of the Day where you are. It may perhaps prove acceptable to ſome perſons, if I here add a ſhort explanation of the Equation of Time: Whence it ariſes from what point - it begins to be reckoned how it comes to be reduced to nothing four days in the year, at ſuch very unequal intervals and all on days which appear to have nothing in them to claim ſuch preference Not having ſeen this clearly ſtated in any books, at leaſt in any familiar way; but hav- ing done it ſome time ſince, upon being aſked a queſtion I could not im- mediately reſolve, I will here tranſcribe thoſe memoranda, for the ſatisfac- faćtion of ſuch perſons as may feel inclined to aſk any of the queſtions above. - The Sun's RA in Time, is that hour of fidereal time, at which the Sun's Centre is on the Meridian at any certain place. This would each day be increaſed [accelerated] by 3". 56”, 55 of fidereal time, or 3. 55",909 of mean ſolar time, if the Earth's motion in her An- nual Orbit were equable. - But ſince that is not the caſe, the Sun's RA is given in the Nautical Almanac ſuch as it is each day at noon at Greenwich ; and the daily dif- ference •ºs t yº * & * 2. * : sº -- .* v. --- ‘g, & 5 ... * . . . A p P E N DIX. 67 * :* 4. £r 2. 3. " … * † : * , jº, 2- ºr,” & *. ference of that from 3. 56.55 of fidereal time, is the daily difference in the Equation of time ariſing from that cauſe; the aggregate of which dif- ferences, ſummed up together, from the time of the Sun's being in Apogee (or more properly the Earth's being in its Aphelion) applied with a contrary ſign, is that part of the Equation of time itſelf which ariſes from the Earth's unequal or anomalous motion in its orbit; whence the apparent diſtance of the Sun from the Apogee has obtained the name of the Sun's Anomaly. “s. The day of no Equation ariſing from this cauſe, would therefore be, when the Sun is in Apogee ; from which inſtant thoſe allowances for Equation are reckoned to begin : and the ſame would be the caſe when it is in Perigee. But ſince there is another Equation, ariſing from the obli- quity of the Ecliptic ; which is at its minimum at the two Equinoxes and two Solſtices, but comes to its maximum between each; counteraćing the former Equation in the two Summer quarters, and coinciding with it in the two Winter ones ; and which at the time of the Sun’s being in Apogee, amounts to about + 3'. I 9”; the real inſtant of no Equation ariſing from the combination of theſe two cauſes, is ſome days before the Apogee ; and a few, not quite ſo many, after the Perigee. The Equation of Time (thus derived from a combination of quite dif- fering cauſes) ſerves to ſhew, how much Mean Solar Time is faſter +, or ſlower —, than Apparent Time, or the time of the Sun's being on the Meridian, at Greenwich : and a Chronometer regulated by Me. Sol. Ti. ought to be juſt ſo much beyond or ſhort of 12 o'clock, or o”. o. oº, as is ſet down in the Almanac. But it muſt be remembered, that the pro- portional difference of this from that of the next noon, muſt be added or ſubtraćted, to give the relative Equation of time at any intermediate hour, or any ſtation differing in Longitude. Hence, Sid. Ti. ; – Sun's RA at preceding noon ; — Accel, for the hour ſo de- duced ; + Equat. -- at prec. noon; is = Me. Sol. Ti. corre&t; and v. v. Me. Sol. Ti. ; H Equat. -- at prec, noon : + Accel. for that hour; -- Sun's RA at prec. noon ; F Sid. Ti. --- K 2 Q. Sid. 68 2 . . A PPEND IX, & “t. * Sid. Ti. ; – Sun's RA at prec. noon;– Accel, for the hour ſo deduced ; " + the proportional diff" of Equat, H- for that hour; F Apparent time; and v. v. --- *~. k & J * > **** *x, {* < App Ti. ; + Accel. for that hour ; + prop, diff of Eq. He for that hour; + Sun's RA at prec. noon ; = Sid. Ti. * * *. N. B. The above, relate all of them to Greenwich; and a propº- ' tional correótion muſt be made for the difference of Longitude at any diſtant ſtation. 'ſ * Sid. Ti. gains on Me. Sol. Ti. about 1” in 6': or more correctly 9”,856. #' hour. \ Aº App E N Dix. 69 & - (5.) | ACCELERATION of STARS on MEAN Solar - - TIME ; or, Difference to be ſubtracted from Sidereal D. E. CIM A. L.S. ºf Time to reduce it to Me. Sol. Time. of } — - *-*—------——?-? –1 = ------- —w- Hours and Minutes. | In Days. In Hours. - In Minutes, &c. i wº- --- —i- | —- // - A // – h /* h |Days. h a 2. Hours, / / /* // /// // /// // | Ar // A 1 3.5529 I I o. 9,830 I o, 164 || 31 5,077 1 |o,o 16 || 31 |o,516 | 2 7.5.1,82 2 19,659 || 2 | .328 || 32 || 5,242 || 2 | SO33 || 32 || >533 # 3 || | I.47,73 || 3 29,488 || 3 || 491 || 33 5,406 || 3 || 3950 || 33 || >550 4 15.43,64 || 4 39,388 || 4 || >655 || 34 5,570 || 4 || Soó6 || 34 ,566 | 5 I 9.39,55 5 49,147 || 5 || >819 || 35 5,734 || 5 || 3083 || 35 |_2583 | 6 23.35,46 6 58,977 6 : ,983 || 36 5,898 6 , 1 Oc || 36 ,6co 7 27.31,37 7 1. 8,806 7 1,147 || 37 6,061 7 | x1 16 || 37 ,616 8 31.27,28 8 r. 18,636 8 1,31 1 || 38 6,225 8 , I 33 || 38 ,633 | 9 35,23, I 9 9 | 1. 28,466 9 1,474 || 39 6,389 9 || > || 50 || 39 || >650 | Io 39. I 9,09 Io I. 38,296 || Io 1,638 || 4o 6,553 || Io 166 || 4o ,666 ł II 4-3. I 53CO II. 1. 48,125 II | I,802 || 41 || 6,717 II 2.183 || 4 I ,683 ! I 2 49. IO29 I I 2. I. 57,955 || || 2 | 1,966 || 42 6,881 I 2 32OO || 42 37 OO : 13 5 I. 6,82 H3 2. 7,784 || I3 2,129 || 43 7,044 || I3 22 16 || 43 ,716 14 55. 2,73 || 14 || 2: 17,614 || 14 2,293 || 44 || 7,208 || 14 233 || 44 ,733 | 15 58.58,64 || 5 || 2: 27,443 || 5 || 2,457 || 45 || 7,372 || 15 || 25o || 45 750 16 | 1. 2.54,55 || 16 || 2. 37,273 || 16 2,621 || 46 || 7,536 || 16 || >266 || 46 ,766 | 7 || || 6.33.3 || 7 || 2.37,163 || 7 || 2.78; 7 | }}}} || 7 || 2:3 || || ,783 18 I. Io. 46,37 18 2. 56,932 || 18 2,949 || 48 || 7,863 || 18 ||,3oo'ſ 48 ,806 I 9 || I. I.4,42,28 19 || 3: 6,761 || 19 3,112 || 49 || 8,027 || 19 || 316 || 49 ,816 20 | 1. 18.38, 19 || 20 3. 16,591 || 20 ! 3,276 || 5o 8,191 || 20 || 333 || 5o ,833 21 | 1. 22.34,09 || 2 || 3:26,420 || 2 || || 3,440 || 5 | | 8,355 || 2 | | 35o || 5 | | 850 | 22 | 1. 26.30,00 || 22 || 3: 36,250 || 22 || 3,694 || 52 8,519 || 22 || 366 || 52 ,866 23 I. 30.25,91 23 || 3-46,08o || 23 3,768 || 53 8,681 || 23 ,383 || 53 ,883 24 | I. 34.21,82 24 3. 55,999 || 24 3,932 || 54 || 8,846 24 || 3400 || 54 59CO. 25 I. 38. 17,73 25 4,099 || 55 9,04O || 25 - 34 6 || 55 || 3916 26 | 1.42.13,64 || || 26 4,259 || 56 || 9,174 || 26 ,433 || 56 ,933 27 I, 40, 9,55. 27 4,433 || 57 || 9,338 || 27 | 3456 || 57 | 959 28 | 1.5o. 5,46 28 4,587 || 58 || 9,592 || 28 466 || 58 ,966 29 I. 54. I-37 29 || 4,751 || 59 || 9,665 || 29 || 483 || 59 ,983 3o I. 57-57,28 30 4,915 || 6o 9,830 || 36 | ,5oo || 60 | 1,000 ! 31 2. 1.53,19 - | | •º * Tºº-ºº. r - +---aw- *-i-º-viſ ...” 3. 4: f * A PP E Y. *.* _-- ** k" ~~~~~~ * 3. %. º 3. * * * * * &#x X. r & r N D Ix, Ay. * ~#2 * * & $. * * * t *..., *- 6 * * :* & * >. …"--> —l- º ! - * t L_*: > t ia. y * * ~xy”. 3. \ *: *... 3 ** anº- — O’s R. A. = Mer. Paſſage of k. +- ,- STA R 's MEAN R. A. 1800. | S U Nºs. MEAN R. A. Me. R. A. Hours. || Days. | Me. R. A.; h A h / , /r y Pegaſi - - - - - o. 2 Jan. 5. 19 || 1 || 3. 57 Polaris - - - ºme tº O. 52 2O, 2 O 2. 7. 53 & Arietis - - * ºn I • ſº º & Ceti - - - º º 2. ; | Feb. 4. 21, 3. II. 5O Aldebaran - - •º gº 4- 24. I9. 22 Capella - - - tº ºr 5. i Mar. 6. 23 4. I 5. 46 Rigel - - - - - 5. 4 . 2 I , G 5. I9. 43 3 Tauri - - tº- ºn 5. I 3 A 6 & Orionis - - tº º 5. 44 z: pr. b. I 6. 23. 39 Sirius - - - tº-2 ºn 6. 36 2 I . 2 7. 27, 36 Caſtor - - - wºº tº 7. 2 I May 6. 3 Procyon - - gº º 7. 28 2. 4. 8. 3 I. 32 Pollux - - - sm, ºn 7. 33 9. 35. 29 Cº., Hydra? - *- eum º ... I June 6. 5 Regulus - - * * 3. ; 2 I. 6 Io. 1 39. 26 9 Leonis - - - - | I I. 38 July 6. 7 II • 43. 22 (3 Virginis - - - - I I. 4o 21. 8. Spica TV - - - - I 3. 14. Aug. 6 I 2. 47. I 9 Aréturus - - - - | 1.4. 6 5 * * * 9 I 3. 5 I. I 5 & Librae 2da tº- * * I 4. 39 21. I O * & Coronae - - - - | I 5. 26 Sept. 5. I I 14. 55. I 2 & Serpentis - — — . I 5. 34. 2 I. I 2 I 5. 59. 8 Antares - - tº- ºl I6. 17 Oćt & Herculis - - - - | I 7. 5 • 5. 13 || - & Ophiuchi – - - | I 7. 25 2O. I 4. a Lyrae - - - - - | 18. 30 Nov. 5. 15 o, Aquilae - - - - - | 19. 4 I 2O. 16 to, Capricorni 2* - - 20. 6 1 º Cº. 3. - - mº º 2O. 34. Dec. 5. 17 b 2 Aquarii - - - - 2 I • 55 2O. I 8 Fomalhaut - - - - 22. 46 & Pegaſi - - - - 22. 54 * T-- & Andromedae - - - || 23. 58 :: Aºre N prx. sº 7F (7.) A R U L E OR F O R M U L A Fo R C O.M. PUT IN G T H E E F FECT OF THE CH A N G E IN T H E S UN ? S D E C L I- N AT I O N, O N A MER ID I A N L IN E, DED U C E D F R O M C OR RESPONDING Az IM UT H S OBS E R v ED w H E N. T H E SUN IS AT E QUAL ALT IT UD E S BE FOR E A N D. A FTE R N O O N. B. Y M R. W. I E L I A M W A L E S.. TA K E the daily Variation of the Sun's Declination from the Nau- tical Almanac. Then ſay, As 24" : is to half the intervaſ between the obſervations :: ſo is the daily. change in the Declination : to its change in that half interval. Turn the half interval, into degrees, minutes, and ſeconds;. And reduce the change in that half interval, to ſeconds. Then, To the Log" of the change ſo found, add- -- . "A the Log Coſec. of the half interval, and . the Log Secant of the Latitude of the ſtation. The ſum abating 20 from the Index will be, the Log" of the Correótion of the Azimuth in ſeconds; to be applied to the middle point between, the two obſerved Azimuths. This will fall to the Weſt of the true South point of the Meridian, when the Sun is advancing towards the North Pole ; and v. v. Eaſt, when he is reëºding from it. *** * 72 ar » ennºx. ºf O R MºU L A F O R C A L C U L A TH N G T IM E O R A ZIM U TH F R O M A N O B.S E R V E D Z E N. :D IS T. O. F. T H E S U N O R A KNOWN STA R. T H E Problem in both of theſe caſes is the ſame : in an oblique ſphe- rical Triangle, formed between the Pole, the Zenith, and the Objećt, hav- ing the three ſides, to inveſtigate either of the Angles. The fides are, the Complement of the Latitude, the Polar Diſtance of the Objećt, and the Zenith Diſtance of it. If the Angle ſought be leſs than 90°, * Take half the ſum of the three ſides, and its difference from each of the ſides containing the required Angle ; To the Log. Sines of each of the ſaid differences, Add, the Arith. Compl. of the Log. ſi. of the containing ſides : Half the ſum of theſe four Logarithms will be the Log, ſi. of half the re- quired Angle. If the Angle ſought be greater than 90°, To the Log, fi. of half the ſum of the three fides, Add the Log. fi. of the half ſum — the ſide oppoſite to the required Angle, And the Arith. Compl. of the Log. fines of the containing fides: Half the ſum of theſe four Logarithms will be the Logº coſ. of half the re- quired Angle. º, Theſe will either of them ſerve where the Angle required does not ex- ceed or fall ſhort of 90°; but the firſt fails where it approaches to 180°, and the ſecond where it is very ſmall. ~ * It ſcarcely need be added, that in this, as in all other Obſervations, the greater care is taken in diveſting the obſerved Altitude of Refraćtion and Parallax, and allowing for the Sun's Semidiameter and his Declination at the time of the Obſervation, the more true will be the reſult. y *ºmº- t *AF PEN prx. 73 ( 10. & 11.) - How TO DEDUCE ‘A MERIDIAN FROM THE POLE STA R. OF this there are two ways : Either by its diſtance from the Pole when at its greateſt elongation Eaſt or Weſt; - Or by its Meridian Paſſage, and bringing the Teleſcope to biſect it juſt at that inſtant. The motion of this Star is ſo ſlow, that it is not difficult in either of theſe ways to come very near the truth. For the firſt : Calculate the exact apparent Polar Diſtance of the Star on that day, and the Time when it will be at its greateſt elongation E. or W. ; and bring the Teleſcope to biſe&t it at that inſtant. The calculated apparent P. diſt. of the Star at that time, corrected by the Coſ. of its Altitude (or Sine of the Co. Lat. of the ſtation) will be the Azimuth of the Star at that inſtant from the true Meridian. Therefore, Log. Si. of the Star's P. diſt. : + R. ; – L. Coſ. of Lat. ; will be = Azi- muth of the Star from the North. To which the Inſtrument may the 1 be ſhifted on the Azimuth Circle accordingly. For the other method : Calculate the Time of the Meridian Paſſage of the Star correóily, and ~. apply that to your Chronometer. Then, having the Star in the field of your Teleſcope (the Inſtrument being firſt truly adjuſted in every parti- cular, and the adjuſting-ſcrew for Azimuth between your finger and thumb) and keeping it biſected or covered by your Meridian wire till the exact iſlant calculated, clamp the Inſtrument there in Azimuth, and you will find it very nearly in the Meridian indeed. PART II. L ** >, <> r 3 ** * …& < ^ * sº ** Aſ Xs * sº *A PP jº Tºks * ~ * $ 8 * * * ~, *** *}~ ºs-Sº-º: * * * * * * x º, * *. -*. *... --> * .* *** FORM U L A Fo R C O R RECT IN G T H E E R RoR of A M E RIDIAN TE L E SCOPE BY THE OBSERVATION OF ANY C I R C U M P O L A R STAR ABOVE AND BE LOW T H E PO L E. e * ... •, IF the Weſtern Interval be greater than the Eaſtern one, the Teleſcope points to the Eaſt of that end of the true Meridian which lies under the elevated Pole (be that N. or S.) and v. v. The Angle of this deviation may be inveſtigated thus: To the Log" of half the difference between the intervals in Seconds (or the difference between either interval and 12" Sid. Time) Add the Log Tangent of the Star's PD. And the Logº Secant of the Lat. of the ſtation. -- *** 3. The ſum (abating 20 from the Index) will give the Log" of a number of Seconds of Sid. Time; which converted into Degrees, &c. will expreſs the angular deviation of the Inſtrument from the true Meridian, to be applied as above. This method depends not at all upon knowing truly the RA of the Star ; nor its PD with any very great accuracy: the ZD or Alt. read’d off with the Inſtrument, as it paſſes the Meridian, will give the latter with fully ſufficient preciſion. _f ºf sy" s **** * *...* º *: *$. .* +x ** - r $º ** *::: sº- ** ~~& * * & 2 * ły -e- - *::::: 3. : *.* & e * * av P: M. jºy * * 3 * * * • * r .* * x, * -- a-- +. ºãº. :=s. º x * * - * : $3.3 Sºº ºf ºzºº. *** sº sº ºr ºr= < x < * * * ~ * ~ * * *-* * * * * tº .” * * * * *ºtº º-º-º-º-º-º-º-º-º-º: º -º-º-ººººººººººººººººss: ^w- *::::::::s *rº - # is ** – 3 ) Foºk M U L A F ÖR THE co R REC Tro N OF A MER ID I AN T E L E SCO P E B Y T H E O B S E R V AT I O N OF T W O STA R S D IF FER IN G CONSID E R A B L Y IN P O L A R D IST A N C E. ' IF the Southern of two Stars paſſes a Meridian Teleſcope too ſoon for the calculated difference of apparent RA between them (whether its paſſage be before or after the Northern one, is immaterial) the Teleſcope when turned down towards the South Horizon will point to the Eaſt of the True Meridian, and v. v. This holds univerſally, whether the Latitude of the ſtation be N. or S. The Angle of this deviation from the Meridian may be found thus: The quantity of Sidereal Time, by which the obſerved difference of RA varies from the calculated difference between the Stars, being reduced to Seconds of Time; To the Log" of that number of Seconds; add the Log" Coſines of the declination of each Star ;- the Log Coſecant of the difference between them in declination; and the Log Secant of the Lat. of the ſtation : The ſum (abating 40 from the Index) will give the Log" of a number of Seconds of Sidereal Time; which reduced to Degrees, &c. will expreſs. the Angle made by the Inſtrument and the True Meridian. s > -, ( 1.4. ). ** *. s º * . * 2. FO R D EDUCING THE LoN GITUDE OF A STATI on ; F R O M T H E M ERI DIAN PAS S A G E O F T H E M O O'N. OBSERVE carefully the paſſage of the Moon's enlightened limb at all the wires; and reduce them to the central one. * a' Add or ſubtract from this, the time that her Semidiameter takes in paſ. fing the Meridian. This, taken from the Table which follows, will give the time of the paſſage of her centre. { - Reduce this to Me. Sol. Ti, at the ſtation; by applying to it the error of . your Chronometer at that inſtant, with a contrary ſign. * Then, N. To find at what time the Moon's paſſage is by calculation expected on that day at Greenwich.: From the Moon's RA at preceding noon or midnight; taken from the Nautical Almanac, and converted into time; wº- Subtraćt the Sun's RA for the ſame hour ; It will give the Approximate Apparent Time of the Moon's paſſage, To bring this to greater accuracy: From the motion of the Moon in the laſt 12 hours; Subtract the Motion of the Sun in the ſame ſpace; It will give the Moon's Retardation in the laſt 12 hours. Then ſay, As 12": Moon's 'Retard. in D :: Approx” Ti. -: 1ſt Preportional :: 1ſt Proportional : 2d Propor’ and * º Approx” Ti. ; + 1ſt Propor'; + 2d Propor'; will give the Apparent Time of the Moon's paſſage at Greenwich correót: which being reduced to Me. Sol. Ti, will give her paſſage at Greenwich for that day in Me. Sol. Ti. Taſtly, As twice the Moon's Retardation in 12 hours; is to 24"; * ſo is the difference of the obſerved paſſage at the ſtation, ſooner or later than that calculated for Greenwich; to the difference of Longitude Eaſt or Weſt from Greenwich. - 6 Hence, Air F frn Brx. 77 * * *: **** * . . . . Hence, by Logarithms: * To Log. of Moon's Retard. in 12" reduced into Seconds; - Add Log, of the Approximate Time in Seconds; And the Arith. Compl. of Log, of 12" or 43200”; • *. The ſum, abating the tens from the Index, will be the Log, of a 1ſt Proportional. - And, To Log. of Moon's Retard. in 12"; Add Log. of the 1ſt Prop'; And Ar. Co., Log. of 12"; The ſum, abating the tens from the Index, will give the 2d Proportional. Then, as before : Approx. Ti. ; + 1ſt Prop. ; + 2d Prop. ; = App' Time of Moon's paſ. ſage at Greenwich ; to be reduced to Me. Sol. Ti. And laſtly, To Log. of 24” in Seconds, or 86400" ; Add Log. of the obſerved difference of the paſſage, from the calculation for Greenwich ; - And Arith. Comp. of Log. of twice the Moon's Retardation in 12 hours; The ſum, abating the tens from the Index, will give the difference of Longitude in Time: Eaſt, if the obſerved paſſage at the ſtation be before that at Greenwich; and Weſt, if the time of the paſſage be after it. The Table which follows, will ſerve to reduce the time of an obſerved paſſage of the Moon's enlightened limb to that of her centre, according to her Horizontal Parallax and Apparent Declination at the time ; the mean daily Retardation being ſuppoſed equal to 55'. This will give it pretty near the truth ; within 1° at the worſt. But it were to be wiſhed, that her Meridian Paſſage at Greenwich cor- rećt, and the time that her Semidiameter takes in paſſing the Meridian daily at that place, could be taken out from the Nautical Almanac, as readily as thoſe of the Sun. The 78 A PP E N D IX, The advantage attending this method of inveſtigating the Longitude of a diſtant ſtation by the Meridian Paſſage of the Moon, is, that it may be repeated almoſt daily in every part of the Globe. The accuracy to be ex- pećted in it, may be ſtated thus: As Me. Retard. in 24"; 24" :: 1" Error : 26", 182 of time in the Lon- gitude deduced. - For, From the Log. of 864oo" (or 24") - - - - - 4.936,5137 Dedućting the Log. of 3300" (or 55') - - - - 3.5 1851.39 It leaves the Log. - - - - - - - - - - - - - 1.4.179998 = 26", 182 as the Mean Error in Longitude in Time (or 6' 30" in Degrees) for I” Error in the Obſervation or Calculation. - In obſervations of this kind, it ſhould be remarked, that with a ſmall Teleſcope, the Appulſe of the 1ſt limb of the Moon, as a Tangent to a wire, will appear a ſmall fraćtion of a ſecond ſooner, and that of the 2d limb's leaving the wire as much later, than in one of greater magnifying: power; which will have a tendency to give the reſult of a Long. Eaſt of Greenwich in exceſs when deduced from the 1ſt limb, and in defect from the 2d ; and v. v. when the Long, is to the Weſtward. The mean reſult from 39 obſervations of the Moon's 1ſt limb at Chiſle- hurſt, compared with correſpondent ones at Greenwich, gives 7",4 more. for the difference of Longitude between the ſtations, than is the truth. But if four obſervations, ſomewhat doubtful, be excluded, the reſult comes. out ſtill much nearer to it. -,” 7 t; A PP E N p Ix. (15.) A TABLE of the TIME that the SEMIDIAMETER of the Moon takes in paſſing the Meridian, according to her Horizontal Parallax and apparent Declination. | * Argument. On the top her Horizontal Parallax: Down the fide her Apparent Declination. —a | ) *S Hor. / // / // / // / // / // /* z/ ; / // Af // / // / // A // Parallax. 53. o 54 o 55. O 56. o 57. O 58. of 59. o | 6o. of 60. 32 6 I. o 61. 30 )’s Decl / // y // / // / // / // / // A // / // | / // / // / // o_| i. 9.2 I. ix3| i. 2,5 | i. 3.6 | 1. 4,7| I. 5,9| I. 7,ol I. 8, 1 I. 8,7| I. 9,3 I, 9,9 I | 1. o.2 I. I.3| I. 235 | I. 3,6 | 1. 4-7 | 1. 539 I. 7,o i. 8, I I. 8,7| 1. 9,3| 1. 9,9 2 | 1. o.3 | 1. 1,4 | 1. 2,6 I. 3,7| I. 458 I. 6,o J. 7, I I. 8,2 I. 8,8 I. 9,4 I. Io,0 | 3 | 1. O,3| I. 1,4|I. 2,6 I. 3,7|I. 4,8|I. 6,o I. 7, I I. 8,3| I. 8,8|| F. 9,4 | 1.1o,0 4 |I. O,4| I. I.5 I. 2,7| I. 3,8|I. 459 I. 6, I I. 7,2 I. 8,4 I. 8,9| I. 9,5 | 1. Io, I 5 I. o.4 I. I,6|I. 2,7 I. 3,9|I. 5,O | I. 6, I I. 7,2| I. 8,5| I. 9,0|I, 9,6 | 1. 10,2 6 | 1. o.5 | 1. 1,7| I. 2,8|I. 450 I. 5, 1 I. 6,2 | 1. 7,3| I. 8,6 | 1. 9, 1 | 1. 9,7 - I. I O,3 | 7 | 1. o.7 | 1. I,9| I. 3,0|I. 45 I | 1. 5.2 I. 6,3| I. 7,4|1, 8,7| I. 9,2| I. 9,8 | 1. Io,4 8 | 1. o.8 I. 2,O | I. 3, 1 | 1. 4.3 I. 5,4| I. 6,5 I. 7,6|I. 8,8 | 1. 9,4| I. Io,0 I. I.O,5 j 9 I. I.O | 1. 2, I I. 3,2 | 1. 4,5|I. 556 I. 6,7|I. 7,8 | 1. 9,0| 1. 9,6|I. Io, 2 | 1. Io,7 | Io I. I, I | 1. 2,3| I. 334|| 1. 4,7|I. 5,8 1, 6.9 i. 8,O | 1. 9,2 | 1. 9,8|I. Io,4 || 1, 10,9 11 I. I,3| 1. 2,5 I. 3,6 | 1. 4.9 I. 6,o I. 7, I i. 8,2 | I 12 | 1. 1,6|I. 2,8| I. 3,9| 1. 5.2 | 1. 6,2 I. 7,3|I. 8,4| I. 9,7| I. Io,3 I - I O29 I. I I,4 13 | I. 1,8|I. 3,0|I. 4, 1 | I. 5,4|I. 6,4|I. 7,6 I. 8,7| i. 10,0| I, Io,5 | 1.1 1,2 I. I 1,7 14 | 1. 2,O | 1. 322 | 1. 4.4 | 1. 5.6 I. 6,7 I. 7,9|I. 9,0| 1.10,3| I. Io,8| I. 1 1,5 | 1.12,0 15 I. 2,3 I. 3,5 | 1. 4-7 | 1. 539 I. 7,o I. 8,2|I. 9.4|I. Io,6| I, II, I i. 1 1,8 i. 12,3 - 16 I. 2,6 i. 3,8|I. 5,0|I. 6,2|I. 7-3 | 1. 8,5 | 1. 9,7| I. Io,9| I. 1 1,5 I. 12,1 i. 12,7 17 | 1. 2,9 I. 4, 1 || I. 5,3| I. 6,5 I. 7,6|I. 8,8|I. Io, I I. I I,3| 1. 1,9| I. 12,5 | 1.13.1 18 I. 3,3|I. 4,5|I. 5,7| I. 6,8|I. 8,9| 1. 9,2| I. Io,5|I. 1 1,7| 1.1 2,3| 1.12,9 I. I 335 I I 924 I. Io,0| I. Io,6 | 1. I I, I 19 I. 3,7| I. 459 |I. 6, I | 1. 7, I | I. 8,4 I. 9,7| I. Io9 | 1.12, I | 1. 12,7 • 393 || I. I 3,9 | 20 | 1. 4, I | 1. 5,3 I. 6,5|I. 7,6|I. 8,8| I. Io, I I. 1 1,3 | 1, 12,5 1, 13,2 • I 337 I. I 454. -*. 21 | 1. 4,5 | i. 5,7| I. 6,9|I. 8, 1 | i. 9;3| I. Io,6|I, II,7| 1.13,O | 1. 13,7 | 1.14,2 I. I.4, 9 22 | I. 5,o I. 6, 1 | 1. 7,3| I. 8,6|I. 9,8| I. I I, I I, 12.2 | 1.13, 5, 1.14,2 I. I.4,7 I. I 5 4. 23 I. 524 I. 6,6|I. 7,8 I. 9, 1 | I. Io,3| I. I 1,6 I, 12,7| I. 14,0 I. I.437 I. I 5,2 I. I 5, 9 24. I. 539 I. 7, I I. 8,3 I. 9,6 I. I.O,8 I. I 2, I I y I 3×3 I. I.4,6 I. I 5, 2 I. I 5,8 1.16,4 25 I. 6,4|1. 7,7|I. 8,9|I. Io,2|1. 1.4| I. 12,7| I, 1339|| 1.15,2 1.15,8 | 1.16,4 | 1.17% 26 I. 6,9| I. 8,3 I. 9,5 | 1, Io,8 I. 12.6 I. 13.3 | 1.14,6 | 1. I 5,8 . I 6,4 | 1. 27 | 1. 7,5 | 1. 8,9| I. Io, I | 1, 1,4|I. 12.6 I, 13,9| i. 1552 i. 16,5 1.17, 1 | 1. 28 I. 8,2 I. 9,5 I. Io,7| I, I2,O |I. I.333 I. 14,6 I. I 599 I. 17,2 1, 17,8 || 1 I I 7, I I. 17,7 I 7,8 I. 18,4 This Table ſuppoſes the mean daily Retardation of the Moon to be 55'. 8o APPEN prx. ( 16.) AE A TABLE of the TIME that 15” of a GREAT CIRCLE take in paſſing, the MERIDIAN at different Degrees of Polar Diſtance. * re +. ** "Y- sº- # :::::::::::::::::::::::::::::::::::::::::::::::::::::::=sºft | k # P. diſt, P. diſt. P. diſt, P. diſt. P. diſt, x { { | O O // Q // O // © Z/ I 26 2329 5 I I,29 76 I 303 IOI I,O2 2 27 232 I 52 I,27 77 I,03 I O2 ISO3 3 28 2, T4. 53 I 325 78 I 393 Io.3 1,03 4. // 29 2,07 54. I 323 79 I 3O2 IO4. I 503 5 II 247 3O 2,09 || 55 I,22 8O I 3 O2 Io; I394 6 3 I I 294 56 I,2O 8 I I 3O2 Ioé I, O4. 7 32 1,88 57 I, I8 82 I,O I Io'7 I 3O4. 8 33 I,83 58 I, I 7 83 I,OI Io& I 505 9 34 1,78 59 1,16 84. I,OI Io9 IxoS It O 5,76 35 I 374. 6O I, I 5 85 I,OO * I ICD I,06 1 I 5,26 36 I,7O 6 I I 3 I 4. 86 I I I 1,06 I 2. 4,81 37 1,66 62 I, I 3 87 I T 2. I,O7 I 3 434 I 38 1,62 63 I, I 2 88 II.3 I,08 I4. 43 I I 39 I 359 64 I, II 89 II 4. 1599 I 5 3,8 4.O 1,56 65 I, Io 90 I,OO II 5 I 2 IO I6 3,64 4. I I 353 66 I O9 9I I 16 I, II 17 3,44. 42 1,50 || 67 1,08 92 I 17 I, I 2 I 8 3, 25 43 I 347 68 Ixo'7 93 I 18 I, I 3 I 9 3597 44 I 344. 69 1,06 94. | II 3 I I 4. QO 2392. 4.5 I34. I 7o 1,06 95 I,OO - || I 20 I, I 5 2 I 2,8. I 46 I 539 7 I Ixoş 96 I,OI I 2. I 1,16 22 2,7 O 47 I 337 72 Ixoş 97 I2O I I 2.2 I, I'7 - 23 23.59 48 I 335 73 I 504. 98 I,OI I 23 1, 18 2 2,48 49 I 333 74. I C4 99 I, O2 I 24 I,2O 25 2337 5O I 33 I || 75 I5C4. IOO I,O2 I 25 I 32.2 83 ( 17.) How BY A ZIMUTH AL TITUDE AND TIME, To observ E T H E EXACT PLA C E O F A N OBJECT, AND D E D UC E ITS RIGHT ASCENSION AND POLAR DISTANCE. This, by a little pračtice, is eaſily performed. The objećt, whether aſcending or deſcending, may readily be followed at a given Altitude to which it is tending, till it cuts the croſſing of the centre wires in the Teleſcope at the point of their contaët. Noting that inſtant, and reading off the Azimuth and Zen. Diſtances on their reſpective circles, the ſame may be repeated as many times as ſhall be found "convenient; and the greater number of ſuch obſervations are made, the mean reſult of them all will come nearer to the truth. By the method ſtated in Nº. 4 of this Appendix, you may deduce the exact Sidereal Time, or RA of Mid-heaven, at thoſe inſtants. -. If the Azimuth in any of the obſervations ſhould happen to be exačtly 90°, L. Coſ. of Zen. Diſt. ; -- L. Si. of Lat. ; – Rad. ; == Coſ. of PD. L. Cot. of Zen. Diſt. ; + L. Coſ. of Lat. ; – Rad. ; = Cot. of 3 at the Pole; or diſtance of the Object at that time from the Meridian. But if the Azimuth be greater or leſs than 90°, L. Coſ. of Az. ; + L. Tang. Zen. Diſt. ; – Rad. ; = L. Tang. of 1ſt Arc (or a portion of the Meridian intercepted between a perpen- dicular let fall upon it from the Objećt, and the Zenith of the ſtation) The difference between this and the Co. Lat. will be the 2d Arc. Then, For RA, or the Angle at the Pole : L. Si. of 1ſt Arc; + L. Tang. of Azimuth ; + Ar. Comp. of L. Si. of 2d Arc; = L. Tang, of the Angle at the Pole, or diſtance in Sidereal Time from the Meridian. This added to or deducted from the RA of Mid-heaven will give the -* RA of the Obječt. PART II. M . For ...tº. s g” lº ** * ~& 3 2: * 3. *~ t a * * * , 3. r:- * *s §, * ~sº Y-wº x * . . . . * 3. × §. & ~3. * A. ¥ º, # s * sº $º. - < ** 2 - * t jº * : -3. § ---, tº. 3. § * < * * * * * * ** & *** 3. à * ~. 33; .8% * ** 3, &. * x. -->''. * * #. tº-3 - , & , sº sº “... . -, * : S ^ *ā; ..." 2 -. e ‘gº º ż * * * * * 3: - t ~~% - ; *...* * 3: - sº * . .'; º ºg •3 f * * { ºr ºva e º * * *, *, *, * * * *::: §§§ 3 * *. $ * <\s. As ; * >, + x. Q -º Y -#. §§ {, ~#. ^-J * * a & L. Coſ of 2d Arc; + L. Coſ of Zen. Diff. : + Ar 1ſt Arc ; = L. Coſ. of PD. . . . •ºr ** If you have not Taylor's Logarithms, which give the Sines and Tan- gents to every Second of the Quadrant, it will be moſt convenient to avoid taking your obſervations too near the Eaſt or Weſt; becauſe in ſetting fall a perpendicular from the Object to the Meridian, it is beſt not to have the 1ſt Arc very ſmall, +*- ".. --- * * † $º. A. * sº T H E E N p, . º * , ; ) r. Co. of L. Coſ. of ** .***** ..~ $ * * * Tº * ~, *ré *- * ... * *. * . .” * ... - * * ; O R. R. E. C T I C N S C ſº Ay *.. $ ºf ** * <- º :* , g Page 3. line 3. dele am, which is double. . . . 8. A 10, for in Flamſteed read and Flamſteed. 17. 9. for 19°.41%. 19%,8 read 18”,8. 20, 4, for Caph. Hev. read Ceph. 59. 16. for Sine .947 read ,942. {:}- - - On examination ſince the work was printed off, I ſuſpe&t © that the Longitude of y and & Urſae Minoris, both of Ptolomey and Ul. Beigh, are tranſpoſed in Flamſteed, Edit. I725. 96. 3. for trium Aſtration read Auſtralior. II 5. 17. for 16" read 17" S o / // S o ż Z/ 182. - - - - a 2 Urſae, for Long. 3.28.58.26 read 3.20.58.26. 224, for 23".32/.46" read 23.22.46. IN T H E A P P E N D IX. Page 21. line 3. for Deduced read Reduced. 25. - - - - y Pegaſi for o'.2/.66",79 read o. 2.56,79. N. B. I will not be poſitive, that I have applied the ſigns + properly to the Motions in the laſt column *s of this page; for on a reviſion I muſt own, that I cannot ſatisfy myſelf concerning ſome of them. 29. & Androm. Oét. 27. . . . for 3,"67 read 3,57. 35. 2 Serpentis May 20. . . . for 8,"or read 8,02. o / // 39. o.52.23, 3 ſhould have been o.52.23,3. o.52.24, 6 - - - - - - - - O-52.24,6. h ſº Ayº 43. at 1.22 for 18,74 read 18,78. at 2.12 for 16,84 read 16,82. A-s: at 5. 2 for 5,02 read 5,03. 5.o. at 4" . . Mar. 21. read 16, Io. 68. line 2. for accel. read accel. 72. 6. for ſpherical read ſphaerical. - 25, for does not exceed; read, does not greatly exceed. M 2 & 4O 4. I 43 44. 45 5O $2 $3 * 84 e o R RE cºrro Ns. To THE coR REC Tron S TO BE MADE TO THE ASTRONOMICAL C AT A L O GUES OF THE AUTHOR, DES CO W E RED S IN CE T H E I R PUBLICATION, IN ADDITION TO T Hos E Po N TED OUT AT THE END OF THE V O L. U M E. . . , * IN T H E CATALO GUE IN Z O N Es. In Mºr- *~ Claſs I. T H E word Cephei is wanting before Hevelii 46. Zone y * * - to to 14 || To 47 Caſſiopeas, 1 hour is wanting in the column for RA in Time. It ſhould be 1.44.53,4. Camelop. Hev. 24. for Zen. Diſt. 12.43.28. read 12.48.28. In the note to 3 Cephei for Diſt, 13”.13”. read 13".8°. Inſert 19. Camelopardali: 79. 17.32 86.43 5.17.10,1 || 5,762 || 25.59.34 —3.73 || 6 |. To a Caſſiopeas, note, read Poſ. 5°.26'. NP. To Perſei Hevelii 2. PD. 36.41,17. The comma ſhould be a point. Dele 3" to y Perſei. It ſhould be 2" which is above. + Perfei of Bradley is omitted. - Io Cygni is of the 4th Mag. in Fl. edit. 1712. 24 J, Cygni is compleat in edit. 1712. 39 Lyncis, dele the deſcription of it as a double Star, and inſert double (Herſ. III. 84.) 54 Andromedae is not º' Andromedae, but p Perfei of Bayer. RA. 48.36,9. ſhould be 3". 14.24,6. An Aſteriſc is wanting to de la Caille's obſ, of 9. Urſae. It is in the Aſtronomiae Fundamenta. RA, 200°. 16'. 58°. ſhould be 13".21%. 7",9. 2O I. 9. 3. - - - - - - - 24, 36,2. Meſfier 1773. 138.46, &c. dele the double Star, which ſhould be in Zone 54. The figures of Maſk, at Capella in PD, are out of the line. R.A. laſt line, for 259 read 359. RA. for 136.5.2.2.2. read 236. The ſign over the column for Pratc. in R.A. in Deg, ſhould be + In Ot -. 2- * To Nº. 38 Lyncis inſert, double (Herſ. I, 9.) with the deſcription, which through miſtake in the numbers in Flamſteed was placed to Nº. 39. Eyncis in Zone 39. º At RA. 78.35. 19. read 5.12.21,3. RA, for 392 read 292. II Cygni. 4. The . As T R o No M I c AI, c. A r A 1, o G U Es. 85 65 | 66 67 7o 7 I 74 75 76 78 8 I 82 } ? ** ~~~~~ **** * ~ *---- ~~~~ * ~ * ** *** * ---, ºr “y ** ** **** The note to as Lyncis belongs to 39 Lyncis in Zone 39. Inſert R.A. 137° 15' + 9".51’ + | PD. 54°,40' + | double Star (Herf IV. 55.) º ; At RA. 78.26.51. dele 6". *†. For 8 Leonis Minoris read 5. & A bracket is wanting to conneét Mayer 198 and 22 Aurigae, which are moſt probably the ſame Star. y At RA. 337. 57.22. to o inſert the word Pegaſi. 67 Piſcium ſhould be in this Zone, and not in 65. 11°.9.2 147.83 ||o.44.37.4 |3,189 || 64. 1.51 | 19.67 || 6 || 67 kPiſcium. 125 Tauri is of 4th mag. in Fl. edit. 1712. Dele the whole line of 67 k Piſcium. Inſert 6o Arietis from Zone 67. 47.o.2 52.81 || 3.8.o, I 3,521 || 65.6.19 || 13.69 || 7 |60. 2. 36 Tauri and l. Caille I OA. ſhould be connected with a bracket. Dele 6o Arietis, which ſhould be in Zone 6.5. Inſert from Zone 69 : 51.8.55 | 52.47 || 3.24.35,7 | 3,498 || 67.29.48 || 12.61 || 6 || 9 Tauriz. Dele 81 Piſcium which ſhould be in Zone 71. Dele 9 Tauri which ſhould be in Zone 67. RA. 87.45.2O = 5.5 T.I.3. not 5-54. 1,3- Dele 29 Arietis, which ſhould be in Zone 75. Dele 13 Tauri - - - - - - - - 7o. Inſert, 14.38.49 |47.92 || o.58.35,3 3,195 || 71.28.5 | 19.40 || 6 || 81. p 3Piſcium. 5. r Herculis is of 5 mag. in edit. 1712. For 40 & 2 Arietis, read 45 & 2. Inſert So Arietis from Zone 73, thus: 42.25.26 |49.93 || 2:49:41,7|3,325 || 72.5o.59| 14.81 || 7 | So Z. 54 Arietis ſhould be joined by a bracket to 1. Caille 72. 3 Arietis ſhould be R.A. 23°.46%. 42°. I".357.6°,8. Mayer 26 t is an imperfeót obſervation ; therefore dele z. For Mayer 87 read de la Caille 87 and dele z. Inſert 29 Arietis from Zone 71, thus: 35.20.30|48.92 || 2.2.1.2.2.0 | 3,261 || 75.54.27 | 16.36|| 6,7| 29.Arietis z. 48 Tauri and la Caille I I I ſhould be connected with a bracket. Inſert 83 Tauri from Zone 76, thus: 64.41.11 |50.28 || 4.18.44,7|3,352 || 75.45.6 8.59|| 7 | 83 Tauriz. For R.A. 251.2O.48 read I 5.1.20.48. --~~~ Dele 83 Tauri, which belongs to Zone 75. RA. 186.16, 15. dele 12", which are noted above. For RA. I 59.38.58 read 159.32.58. For R.A. 125.57.36 read I 55.57.36. To 48 Leonis add, Is this Star variable * RA. 94-35. I 5 for cluſter not reſolvable read not round. For c or R E c T 1 o N s ºr o T H E 9. 93 94 95 99 I O3 1 O 5 - I ob I 1 O I I I I I4. I 48 165 169 For R.A. 248.o + following 283.45 + read 284.0 +. Inſert, - 16.4.33 46.54 || 1.4.18,2|3, 193 || 84.49.2 19.26|| 7 || Mayer 41. z. A bracket wanted to connect 75 Leonis to the obſervations of de la Caille and Bradley. . A bracket wanted to conneét 11 1 & Piſcium to la Caille 36. For R.A. 488.43.30 read 288.43.30. 3 Aquilae. Antinoi Hevelii 15. is poſſibly the ſame Star as 7o Aquilae in the next Zone. For 134, 26.31 read 234,26.31. 30 Serpentis, R.A. 252.29, 18 read 30 Ophiuchi. For 38o. 1.29 read 28O. I. 29. - 14 Ceti is not in edit. 1712. Its Long, and Lat. are certainly not right in Flamſteed according to the RA, and PD. ; and Bradley ſeems not to have found it. - - - - It ſhould be about Long, 3.58.56 and Lat. 6,46.o.S. if there be ſuch a Star. A bracket is wanted to conneét 2 Ophiuchi and de la Caille. RA. 84.56. for 17 Ceti read Mayer 17. z. RA. 9o. 12.30 for magn. 1,2 read magn. I I, I 2. R.A. 21 2.53.26 for Mayer 596 read 569. RA, 106.7.45 dele 99 in the column for PD. For R.A. 141.2 I. I 5 read 145.2 I. I 5. For 7. 3 Cervi read 7. 3 Corvi. To 3; Ophiuchi n is omitted. RA. 261.23.31 the hour 17 is omitted. The a i Aquarii Hev. 45 is probably the ſame Star as I off a 3 of Fl. in the next Zone. 1 5 9 2 Sagittarii had been of 4 magn. in Fl. edit. 1712, and correóted in the errata to the 6th. How happens that? For 1 I Leporis read Io. For R.A. 277.46.36 read 217.46.36. 4 Librae. e. RA. 22.28.10 a. Eridani for 148. 17.28 read PD. I.48. 18.28. Inſert 131.36.29 (48.66 || 12.6.25,9 3,244 || 168.8,491 + 29.93 || 5 | 3 Chamaeleontis, l. C. * I N T H E IN DEX. For 64 c 1 and 65 c 2 Draconis read e i and e 2. For 59 e Leonis read 59 c. - To 14, , Scorpii for Zone I Io read Io9. IN As T. Ro No M I c A L c ATA 1, o G tº Es, IN THE CATALOGUE IN RIGHT ASCENSION. For R.A. 1.20.9 read 1.22.9. : 1.29.53 for 148. 17.28 read 148. 18.28. 2. I 1.54 for Caſſ. Hev. 36 read 35. 3. 1.25 for Cam. Hev. 17 read Cam. Hev. 1. 3.24.36 for 69.29.48 read 67.29.48. 9 Tauri. 5.48.11 for Cephei Hev. 2 read 51. 12. 2.21 for Cam. Hev. 31 read Draconis Hev. 4. 12.35-35 for PD. 145.19.38 read 148.32.19. Inſert, h / // ſ. o a za | 16. 17.15 13.36.46 I 8. 9 I4. I7. IO 46. 4 || 71.13. 5 46.18 || 7 I. I.4.53 58.22 105.27.18 19 Urſae Minoris. 2O 54 Herculis. 55 * - e. 35 ºn Ophiuchi- 19.59.32 for 64 c 1 read e I Draconis. 2O. O.12 for 65 c 2 read e 2. IN THE ZODIA CAL CATALOGUE. Q /* // . 14.25.33 Lat. 1.9.28 North, 6 mag. 7o Piſcium inſert. . 20. 17. 8 Lat. for 3.39.27 read 7:39.27. . 22.33:30 for Lat. 4, 13-12 read 4.43.12. . 22.34.38 read for O. 22.38.38 Mayer 6o. 20.39.11 read for I. 29.39.11 5 f Tauri. 25.5o. 17 Lat. 5.32.51 North not South. It is wrong in Flamſteed. 26.27. 12 ſhould be I. 27.27. 12. . 19.31.25 inſert the word Leonis. . I 1. 4.26 for 59 e Leonis read 59 c. . 4.28.51 Mayer 570 }ſhould be joined by a bracket. 4.29, 9 2 Librae . 6.49.57 Antares ſhould be VIII. not VII. . 23.40.23 Lat, for 2.26.37 read 3.26.37. It is a miſtake in the Cat. in the Naut. Almanac. **, I N T H E A D V E R T IS E M E N T. l. 4: from the end, for ºs read .% of an inch. Printed by Luke Hanſard, Great Turnſile, Lincoln’s-Inn Field. Publications by the ſame Author, - # ** Sold by G. W. L. K.I.E, N° 57, Pater-Noſter-Row. An ADDRESS to the Clergy of the Church of England in particular, and to all Chriſtians in general. Humbly propoſing an Application to the Right Reverend the Biſhops, or through their Means to the Le- giſlature, for ſuch Relief in the Matter of Subſcription, as in their Judgements they ſhall ſee proper: To- gether with the Author’s Sentiments of the preſent Forms; and his Reaſons for ſuch an Application. 6d. The State of SUBSCRIPTION to the Articles and Liturgy of the Church of England, towards the Cloſe of the Year 1773, with a View of its Progreſs from the Beginning, and of the Alterations that have ibeen made in it by the late Debates. Recommended to the moſt ſerious Attention of the Three Eſtates of the Realm. 1s. 6d. QUERIES relating to the Book of COMMON PRAYER, &c. with propoſed Amendments, Ad- dreſſed to thoſe in Authority, and ſubmitted to their Confideration. Is. A DISCOURSE on the NATURE and Uſe of CONFIRMATION. 6d. A GENERAL ASTRONOMICAL CATALOGUE, arranged in ZONES of North Polar Diſtance, and adapted to Jan. 1, 1790 containing a comparative View of the mean Poſitions of Stars, Nebulae, and Cluſters of Stars, as they come out upon Calculation from the Tables of ſeveral principal Obſervers; toge- ther with a Propoſal for ſetting on Foot ſome regular Method of obſerving the Heavens, through the con- current Aſſiſtance of Aſtronomers in all Nations; in order to form a more perfeót Regiſter of their pre- fent State, and diſcover any Alterations to which they may regularly be ſubjećt, or which they may at any Time hereafter undergo. 31. 3s, in boards. Two SERMONS preached in the Pariſh Church of Chiſlehurſt in Kent. The Firſt on Friday, April 19, 1793, being the Day appointed for a General Faſt. The Second on, Sunday, June 2, upon reading his Majeſty's Letter in Behalf of a Colle&tion for the French Clergy. 1s. * A SERMON preached in the Church of the united Pariſhes of St. Vedaſt Foſter and St. Michael-le- Quern, London, on Friday, February 28, 1794, being the Day appointed for a General Faſt. is. Direétions for making an univerſal MERIDIAN DIAL, capable of being ſet to any Latitude; which ſhall give the Mean Solar Time of Noon, by Inſpection, without any Calculation whatſoever. Is. A COUNTRY PARSON's ADDRESS to his Flock, to caution them againſt being miſled by the Wolf in Sheep's Cloathing, or receiving Jacobin Teachers of Sedition, who intrude themſelves under the Specious Pretenſe of inſtrućting Youth and preaching Chriſtianity. 1s. % Ditto; Second Edition. Origin and infidious Arts of JACOBINISM, &c. Extraćted from the above, 2d. * A L S O, wº A CCELESTIAL PLANISPHAERE, for affiſting Students in Aſtronomy in learning the Principal Conſtellations. Engraved and ſold by John CARY, No. 181; ſold alſo by WILLIAM CARY, Optician, No. 182, Strand. A N D, The NORTHERN CHRCUMPOLAR REGION, laid down from Obſervations, and adapted to the Beginning of the Year 1800. In 7 Plates. Engraved and ſold by John CARY. 3s. 6d. „ ” s* * .* * *，… ：（ 4， º "ºs. «~ · .*!, ș****!&șº.<- x^* º. s., *> ºſ x &? ） ） * && ！… * .*¿¿.*", * ;* ` ſ … 、、”.`?-º . . ||…-,^ ~$.-, , ** , ?C) =·* * ， ！çº{} -|׺ , • � CO È !… co 5 ;•, , , ， …“. }ſąșae., ,È.* ·3. 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