322 The Orbit and Motion of 



o ,, 



s 



Mean Anomaly at E, 4. oo. 32. 51 



Longitude of the Aphelion, ?for the Epoch 11.23.09.51 

 Longitude of the Node, S I 783,Dec. 31. 2. 12. 46. 14 



Inclination of the Orbit, - oo. oo. 46. 25 



THESE elements agree with all the obfervations made fince 

 Mr HERSCHEL'S difcovery of the Planet, with abundant accura- 

 cy, the differences being as often, and as much, in defect as in 

 excefs. When I compared them with MAYER'S obfervation of 

 the Star, No. 964. I found the calculated place of the Planet 

 only 3'. 52" to the weftward of the Star, and i" to the north- 

 ward. As thefe elements feem to be formed on good prin- 

 ciples, I cannot help being of opinion, that that Star was the 

 Planet now obferved. If, in forming the elements, I had fup- 

 pofed that the fecond differences of the arches were conftant, 

 (a fuppofition quite allowable,) I mould have obtained elements 

 almoft precifely the fame with thofe which I formerly deduced 

 from the fuppofition that the Star, No. 964. of MAYER'S Cata- 

 logue, was the Planet. This afTumption would not have occafi- 

 oned an alteration of one fecond in any of the places above ufed. 



ALTHOUGH it now appeared unneceflary to make any farther 

 trial, I made another correction of the obfervations, fo as to 

 produce a feries of fecond differences, which mould decreafe 

 as rapidly as was confiftent with the probable inaccuracy of 

 the obfervations. This gave me the following elements : 



Mean Diftanee, 19^8254 



Excentricity, 0,88461 



- O ' // 



o 



Mean Longitude, ? 1786 Jan. i. 3. 23. 1.7. 03 



Long, of Aphelion, $M. T. Green. n. 17. 32. 54 



y. d. h. 



Periodic Time, 84". 06. 04. 48 



THESE elements alfo agreed very well with the obfervations 

 fince HERSCHEL'S difcovery ; as alfo with MAYER'S obfervations : 

 But if thefe elements be compared with the obfervation of the 



ftation 



