96 



I) i sco very of t wo new van a b le Stai ■•<?. 



brilliancy on the 20th. Full moonlight prevented any fur- 

 ther records of the vanishing star, but taking advantage of 

 a very fine interval during the totality of the lunar eclipse 

 of June 1st, its invisibility was satisfactorily established ; 

 and though sought for on every suitable opportunity 

 throughout the following five months, it has not since re- 

 appeared. 



The light comparisons actually made were as follows : 

 1863 May 20th 91 magnitude. 



21st.. 

 22nd, 

 24th. 

 25th. 

 28th.. 

 27th. 

 28th. 



96 

 101 



10- 5 

 110 

 114 



11- 9 

 122 



Of the other new variable, situated in the constellation 

 Sagittarius, little more can be said than that it was first 

 seen on July 19th 1883, as a somewhat ruddy star of the 8 J 

 magnitude ; and that from then until the present time it has 

 slowly and steadily diminished to the 12th magnitude, or 

 one twenty-fifth of its greatest recorded intensity of light. 

 Dates of its actual invisibility in previous years cannot be 

 furnished as in the case of U Scorpii, but if visible at all 

 it was most certainly less than 11 \ magnitude on August 

 30th 1859 ; on July 22nd, and on August 7th 1860. 



The approximate positions of the two new stars, reduced 

 to 1860, are : 



U Scorpii... 

 T Sagittarii. 



Light Range. 



9 5 to below 13 "5 magnitude 

 8-5 to 12'0 



Right Ascension 

 h. m. s- 

 16 14 

 19 8 



25-5 

 94 



South Declination 



o / '/ 



17 33 21 

 17 12 11 



Madras Observatory, ) 

 December 1863. } 



N. R. Pogson. 



