Hljiory of Ajircnomy fcr the Year i8o2. 173 



1^12' 19"; epoch of 1802, 4'' 23° xi' 38'', i!ie 31ft of 

 December preceding; equation 28° 25'. C. Bnrckhardt has 

 calculated alio the perturbations of Olbers's planet, which 

 amount to Icveral degrees; they arc long and ditlicult, and 

 will require cbantjcs in the foregoing elenieiu.s. Dr. Gauis 

 has publilhed in Von Zach':^ journal for JSepteniber an ephe- 

 meris of Olbers's planet up to ilie lit of Julv J 803. But 

 C\ Bnrckhardt, when he has fiuilhed his calculation of the 

 perturbatiojis, will give us elements ("till more certain. 



In the beginninixot .lanuary Dr. Gibers tound aoain Piaz- 

 zi's planet, which bad dilappeaied for a lono time ; and alt ro- 

 nomers Cv)ntinued to obferve it til! the month of ,hdv. Alter 

 the 15th of Pebniary Dw Gaufs calculated the new ele- 

 ments; but C. Bnrckhardt undertook to calculate the per- 

 turbations whicb that planet experience-; by the attraction 

 of Jupiter, and found more exacl element.^. We afterwards 

 received the perturbations calculated by iM. Oriani of Milan, 

 and which Dr. Gaufs took into account that be micht belter 

 obtain the elements of its orbit. Thoie eiven in Von 2Cach'> 

 journal tor the month of November; diltance 3"7675 ; tro- 

 pical revolution 1681 davsgliours; tccentriciiv 0'078835 ; 

 equation 9'' 2'; inclination >o"57'37'; epoch h^r 803 at 

 (.iotha, 233' 37' 35'; aphelion 320*^ Y/' 4<^ 'j node'Ko'* 



The kinc of Naples has made an addition of 1200 francs 

 to Piazzi's lalary, in confequence of his difccnery of the new- 

 planet, and the homage he has rendered to his inajclly by 

 naming it in his writings Ceres b'erdmcuuha. 



This vcar we have had alfo a comet, and though very finall 

 it was difcovercd in three places: at Marfeilles, on the 24tb 

 of Auguil, by Louis Pons, keeper of the obfervatory ; on the 

 28th, by C Mechain, one of our moll celebrated afirono- 

 mers, to whom we are already indebted for a great number; 

 at Bremen, on Septctnber 2d, by Dr. Olbers, who difcovcred 

 the tenth planet. This comet was in Serpentarius, very faint 

 and ill dclined, having a very fenfible nucleus. 



C. Mechain and C. McHicr at Paris, and C. Vidal at 

 Mirepoix, obfervcd it with care till the 3d of Otf ober ; and 

 C. Mechain calculated its eiecnents in the following manner 

 from iiis own obfervations : Node ip" 10' 17''; inclinatiotx 

 57^0'; perihelion IJ'* 2*^ 8'; dillance 1-0942; pafTagc of the 

 perihelion, September 9th, 20'' 43' 15" direct nioiion. Thu 

 elements calculated bv Dr. Olbeis, as well as his obfervations, 

 have been infcrtcd in Von Zach's journal. 



It may here be lecti that this contet is among the fmall 

 number of ihol'c which at their greatclt projiimity to the fun 



are 



