. M&fc/r.cti Dr. Olbcrs* Plantt. &$t 



22d We received the 'details, He found the revolution tti he 

 four years (even mouths* and the inclination 35 . 'Tins 

 great inclination fete riled to remove it from the order of pla- 

 nets, and ibme aftron- lied it a comet ; but its proxi- 

 mity, and continual appearance, will not' allow of its being 

 placed among' the number of thofe ftars of which we often 

 Jofe I fight for ib long a .time, and which go to enormous di- 

 stances. 



C. Burckhardt, on hi»..part, made finiilar refcarehes ; he 

 made fevcral trials with ell 1 pies very much eloiiiruU'd, which 

 gave him a refult verv near that of Dr. i I 



On finding; that this planet, like that of I Piazzi, was -be* 

 tween Mars and Jupiter, and that itsnioiion mull be aflecbed 

 bv the attraction of Jupiter, C. Burckhardt undertook to; 

 calculate thefe perturbations. The calculation is long and 

 difficulty but it -is indifpenfabiy neceflary to obtain the orbit 

 with more.exaetnefs. 



At iaRS, .on the. 4th of June, he fmifhed thefe laborious 

 calculations, 'and found the following elements: 



Dilianoe 2.1791, or 95,890,000. 



involution, 4 years, 8 months, and 3 days. 



Eccentricity, 0.2463 ; equation of the orbit, 28° 2$ 7 . 



Epoch of 1802,- 4^23° 50'; aphelion, 10 s 2* 3'; node, 5* 

 22° 28'; inclination, $4° 5Q 1 40 11 . 



Thefe elements correfponded to rive obfervations of -the 

 4th, 16th, and 27th of April, and the 7th and 20th of 

 March ; the laii two made by C. Burckhardt, and Lalande 

 the nephew, who, as well as C. Mechain, Meflier and De- 

 lambre, continued to obferve it as long as it could be feeri in 

 the meridian, becaufe fuch obfervations are the fureft. After 

 the 2 lit of May, other inftruments and other Mars were ne- 

 ceffary ; but it ltiil pan*ed through feme included among the 

 15000 ftars which we have published. On the 15th of June 

 thefe elements correfponded, within a few fecondsy with the 

 obfervations of Mechain and Meflier; which confirms the 

 exaclnefs of the elements found by C. Burckhardt, and af- 

 fures us, that the motion of the new planet is already known. 

 Earon von Zach has publifhed a great many obfervations re- 

 fpecTing it in his Journal. 



C. Cabrol de Murol has calculated for us an ephemeris, 

 which gives the fuuation of this planet to the 21ft of Octo- 

 ber, on which day it will have 227 7' of right afcenfion, and 

 6° 8' of declination. It will then fet at 7 11 51': there is 

 therefore reafon to think that it may be ftill obferved. It 

 will be above Libra near the Serpent, after pafling the legs 

 4} \lhe ,Cowrherd. He finds that, in 1806, it will have $y T ° 



T3 # of 



