1861.] Discovery of the New Planet “ Asia." 293 
Ovvin 0- to cloudy weather the planet could not he recovered after 
May 12th without a knowledge of its orbital elements, and other 
duties prevented me from completing the calculations required until 
the fine weather had broken up. From the places of April 17th, 
May 1st and 12th, I find the following elliptical elements - 
Epoch, 1861 May, 12.20172 Greenwich Mean 
Time. 
Mean Anomaly, 307° 16 52.0 
Perihelion, 301 1 42.0 . T , 
1 Mean Equinox, Jan. 1. 
Ascending Node, ... 202 32 21.9 j 1 
Inclination, 5 57 17.9 
Excentricity, 10 3 10.0 
Daily Motion in Orbit, ... 917 K .530 
Log. Mean Distance, 0.382276 
As a verification of the accuracy of which, the residual error, or 
difference between computation and observation for the middle ob- 
servation, is only 0".4 in latitude ; while the agreement in longitude 
is perfect. It appears also that the mean brightness in opposition 
is 11.6 magnitude, and that the period of revolution is 1368 days, or 
about three and three quarter years. 
Madras Observatory, September 21 st, 1861. 
2 p 2 
