400 



Perih. Passage, 1847, March 30th, 9h. G. M. T. 



Long. Perihel. . 284° 42' 



Asc. Node ... 34 53 



Inclination ... 49 40 



Log. Per. Dist. = 8.4087 



Motion direct. 

 " A letter has reached me this morning from Mr. Graham, 

 dated yesterday, in vphich he states that he has been fortunate 

 enough to obtain, with the circle, the place of a second star, 

 with which he had compared the comet on the lOth, and which 

 was not in any of the catalogues. It is : 



a = 2Ih. 44m. 16.42s. S = 69" 26' 51".5. 



The other star of comparison on the 10th was 7610, B. A. 

 Catalogue. On the I5th he was enabled to compare the 

 place of the comet with the stars 7786, B. A. C, and 7810, 

 B. A. C. Result : 



Feb. 15.45391, G. M. T, a = 22h. 16m. 26.9s. S = 65° 36' 42". 



" The elements deduced by him from Mr. Hind's observa- 

 tions of the 6th, and his own of the 10th and 15th, are : 



Perihel. Passage, 1847, March 30.3483 G. M. T. 



Long. Perih. . . 276° 50' 32'S To app. Equinox, 



Asc. Node . . . 22 38 16 / Feb. 10th. 



Inclination. . . 48 44 2 



Log. Perih. Dist. =: 8.60520 



Motion direct. 

 These agree near enough with the middle observation. He 

 says that he can find no former comet that comes near this 

 orbit : that of 1680 is the most similar, but still wide. His 

 first set of elements seems to have been by no means bad. It 

 strikes me, from the short perihelion distance, that this comet 

 may prove ere long a very fine one. 



" Ever sincerely your's, 



" Edward Cooper." 



