PKOfJKKSS or ASTKONOMV FOR 1891 AND 1S92. 



721 



ohscrvcis were satislicd •■that no new satellite^ lialf as Iniiilil as Ariel at 

 eloniiatiou <'\ists within tlie orbit ol" rnibriel. It is not lilcely that any 

 sneli object exists within tlic orbit of Titania.'' 



Neptune. — Mr. Asapli Uall, Jr., linds that observations of the- satel- 

 Hte with tlie L'O-iueh Wa sliiugton refractor from October, ISOl, to 

 March, 1892, contirni the reality of the sh)w motion, nearly proportional 

 to the tinn% of the orbit })lane of the satellite with respect to the orbit 

 of Xeptune, to which Mr. JMartii called attention and which M. Tisse- 

 rand shows may result from a slight tiatteuing of the i)lauet. 



MINOR PLANETS. 



Asteroids (if IS!)]. — Oithe asteroids announced in the last report, 

 Xo, 280 has been named Idea, 2!K> Phaetusa, 2!>7 CaeciJia, 2118 IJap- 

 tistina, 29!> Thora, .>(>{) (kiraldina, 301 Jiavaria. An asteroid, discov- 

 ered on November 14, 1800, by Charlois, at Nice, and subseiiuentl.x fouml 

 to be a new one, has been named Clarissa. To No. r)23, ])hoto,i;raphed 

 by Dr. \Volf NoYember2S (the tirst asteroid discovered by i»liotography), 

 he has given the name Bruc^ia, in honor of Miss Catherine W. Bruce, 

 who has contributed so generously for the advancement of astronomy. 



In JSitl t w^enty-two new asteroids were added to the group revolving 

 between ^Mars and Jupiter, and photography now having become a 

 powerful aid in the detection of these snnill bodies, tlie number still 

 likely to be found seems almost limitless. The last on the list for 1891, 

 No. 323, was discovered l»y Dr. Wolf u[)on his photographic i^lates. 

 Another asteroid was, in fact, found upon the same plate, but it ]»roved 

 to b(? identical with 27.") (Sapientia). 



I*alisa, on August 11, 1891, discovered what was for a time supposed 

 to be a new i)lanet, but it was found to be identical with 149, Medusa, 

 discovered in 1875; 275, which had not been seen since the oi)position of 

 its discovery (1888), has been found again by the aid of photogra])hy; 

 318 is interesting from the almost exact commensiirability of its ])e- 

 liod with that of Ju[>iter. 



No. 302, (Jlarissa (discovere<l November 14, 1890), was not included in 



the last list published, and is, therefore, introduce(l here to make the 



lists (complete. 



/yifit of minor plancAn of IS'Jl. 



Num- 

 ber. 



302 Ci 



Nauie. 



303 

 30-1 



3or) 



300 

 3()7 

 308 

 300 



Jijscpliiiia 

 01«a 



Uiiitas — 



7 Nik. 



Polyxo 



Frateniitas 



H. Mis. Ill- 



CliarloiH at Nice. . .. 



Millosi'vich, al Koino 



J'.'ilisa. at A'icnna 



Charlois, at Nice 



^Millo.sevicli, at Koine 

 Charlois, at Nice. . . 

 Korelly, at Mar.seillf 

 Palisa. at Vicuna... 



-4() 



