334 



CATALOGUE. — ASTROJTOMy, PXANETS. 



Bernard's history of the obliquity of the 

 ecliptic. Ph. tr. 1684. XIV. 721. 



Louville on the change of place ,#f the eclip- 

 tic. A. P. 1716.1-1. 48. Act. Lips. 1719. 

 •281. 



Halley on the change of latitude of some 

 stars. Ph. tr. 1718. XXX. 736. 

 Most stars indicate a change of about 20' since the time 



of Hipparchus. 



Godin on the diminution of the obliquity of 



theechptic, A. P. 1734. 491- 

 Legentil on the obliquity of the ecliptic. A. 



P. 1743. 67. H. 121. 1757. 180. 

 Lemonnier on the nutation of the earth's 



axis. A. P. 1745. 512. H. 58. 



Bradley's discovery. 



Bradley on an apparent motion of the stars. 

 Ph. tr. 1748. XLV. 1. 



The nutation of the earth's axis. 



■Euler on the approach of the earth to the 



5un.Ph.tr. 1749. XLVI. 203. 

 Euler. Ph. tr. 1750. XLVI. 357. 



Queries if the earth's rotation is uniform : says, that the 

 action of Jupiter accelerates its motion in its orbit, and 

 infers, that its rotation must probably also be accelerated. 



. Lalande on the change of latitude of the 

 stars. A. P. 1758.339- H. 87. 

 Lalande on the obliquity of the ecliptic. A. 

 P. 1762. 267. H. 130. 1780. 285. 



Diminishing about 66" in a century-. 



Lalande. Pli. M. IX. II. 



Makes the secular change 36", 38", or 4l", the obliquity 

 1 Jan. 1800, 23° 27' 58". 



Smeaton and Maskelyne on the menstrual 



parallax. Ph.tr. 1768. 154. 

 Maskelyne on the nutation of the earth's 



axis. Astron. obscrv. 1776. 

 Ilornsby on the obliquity of the ecliptic. 



Ph. tr. 1773. 93. 



Dimmishing about 58" in acetitury. 



K'asiner on the obliquity of the ecliptic. 



Astron. abh. iii. 

 JVallot sur i'oDliquite de I'e.liptique. 4. R. S. 



Mars. 

 Herschel. Ph. tr. 1781. 115. 



Siderial rotation of Mars 21 h.39' 22". 



Herschel on Mars. Ph. tr. 1784. 223. 

 Juno. 



Harding's Juno is supposed to be somewhat nearer to the 

 sun than Ceres. Dr. Herschel finds that neither this body 

 nor either Ceres or Pallas^ subtends any measurable angle- 

 Dec. 1804. It was discovered i Sept. 1S04. 



Pallas. 



Olbers's planet, . discovered 28 March 1802. 



Ph. M. XII. 287. 

 Lalande on Olbers's planet. Journ. Phys. 



LV. 65. Ph. M. XIII. 279- Nich. VIII, 



222. 

 Burckhardt's parabolic orbit of Pallas. Ph. 



M. XII. 371. 

 Burckhardt's elements of Pallas. Ph. M. 



XIV. 186. ' 



On Olbers's Pallas. Nich. 8. II. 20. Journ. 



R. I., L93. 

 See Ceres. 



Ceres. 



On a new planet. Zach. ^Jon. corresp. IV. 53. 



Discovered 1 Jan. 1801. 



On the planet Piazzi. .Tourn. Phys. LIV. 



165, 469. 

 On the nature of Ceres and Pallas. Zach. 



Mon. corn VI. 290. 



Olbers thinks they may be fragments of some larger planet. 



Von Zach on Ceres. JNich. 8. II. 213. Ph. M. 

 XVI. 49. 



Accounts of Piazzi's Ceres. Nich.,8. I. 72, 

 193, 284, 317. I|,48.'Ph, M. X^I. 62. 



Bode on Piazzi. A. Bqrl., 1801. M. 132. 



Herschel on the two lately discovered celes- 

 tial bodies. Ph. tr. 180.'. 213. Nich. 8. IV. 

 126. 



Lalandc's orbits of the new planets. Nich. 

 VIII. 222. 



Journ. R. 1., I. 69, 93. 



