1834.] 



Observations of Moon Culminating Stars, fyc. 299 



The following is a List of the Occultations of Stars by the Moon, 

 observed by Mr. Boulderson, at Seharanpi'ir, latitude 29° 57' 79" N. 

 longitude 5 h. 10. m. 54.1 E. with the longitudes as deduced by him. 



1833. 



Feb.... 



1834. 

 Jan. . . 

 Feb.... 



Mar... , 



* Tauri,. 



* Tauri, 



o Tauri, 



(796)Geminorum, 



(908) , 



H , 



H , 



13 — , 



AR of Star. 



h. 



in. 



s. 



4 



38 



55,263 



3 



51 



7,95 



5 



17 



40,165 



6 



15 



27,271 



7 



13 



28,88 



5 



54 



1,508 



5 



59 



38,38 



Dec. 



of Star. 



+ 



18 



i 

 25 



26,60 



4- 



16 



49 



18,7 



I 



21 



47 



16,4 



23 



24 



39,84 



+- 



23 



15 



26,12 



+ 



23 



15 



53,4 



+ 



23 



7 



58,4 



Mean time o! 

 Phenomenon. 



h. m. s. 

 Im.ll 40 



Im. 9 8 45,0 

 Im. 9 7 7,3 

 Im. 8 49 28,3 

 Im. 6 38 30,0 

 Im. 9 12 44,3 

 Em. 9 46 43,3 

 Im.ll 52 7,7 



Resulting 

 Longitude. 



h. m. s. 

 5 10 31,6 



56,5 

 45,1 

 74,6 

 62,2 

 49.9 

 62,9 

 53,5 



Mean, 5 10 54,1 



Note. — The AR of these stars have been deduced from the Madras catalogue (by 



Mr. Taylor we suppose) : and, with the exception of the emersion of H. Gemino- 



rmn which may be in excess about 3", the mean times of the other phenomena are 



estimated to be correct within one second. 



Of the other stars whose occultations have been observed there is but 

 one (63 Ceti) that can be traced in Piazzi's catalogue. 



Jan. 1st, 1800 63 Ceti (78) AR=32° 44' 30"0, Annual motion + 47 ",34 



Dec. + 6° 49'6',8 „ 16,88 



The observations made by Mr. Boulderson and by Col. T. Oliver 

 would have been published in a former No. of this Journal, but that we 

 were in expectation of obtaining other corresponding observations from 

 some of our scientific correspondents to incorporate with them : the 

 longitudes of the places where these observations were made have been 

 deduced for them, for each day, with reference to Greenwich, on the 

 supposition that the apparent AR of the stars, and of the moon, as given 

 in the Nautical Almanac, would accord with observations made on these 

 objects at Greenwich. 



A correspondent has brought to our notice that there is, generally, 

 about 0,5s. of difference between the apparent AR as given in former 

 numbers of this Journal and in the Nautical Almanac for 1834. This 

 we much regret ; and the more so, as it is out of our power, at pre- 

 sent, to apply a remedy. 



In a catalogue of 720 stars, recently published by the Astronomer 

 Royal, and from which, doubtless, the places of those in the Almanac have 

 been taken, there are but seven which accord in AR with the catalogue 

 of the Astronomical Society, (Mem. As. Soc. iv. 258,) while there are, 



s. s. 



94 stars whose AE differs between 0,3 and 0,4 



78 0,4 and 0,5 



51 0,5 and 0,6 



37 0, 6 and 0,7 



27 . . 0,7 and 0,8 &c. 



from which it will be seen that, without that catalogue, which unfor- 

 tunately we do not possess, we cannot apply a remedy to this evil. 



