182 M. Encke on the Newly discovered Planet. 



until more accurately determined. To estimate the distance 



of the planet, a circular orbit was assumed by Dr. Galle, which 



agrees so accurately with all the individual positions, that the 



tempt to determine an elliptic orbit must be deferred for some 



time. A comparison with the assumed orbit, — 



Epoch Sept. 24'0 mean Berlin time 



Mean longitude. . . . 326° 58' 23"-5 



Ascending node . . . 131 1 10*8 



Inclination 1 52 51*5 



Semidiameter . . . 30-03885 



Mean daily sidereal motion 2l"'55l71 

 gave the following results : — 



The observations made at other observatories, as far as I 

 have become acquainted with them,presenta similar agreement, 

 since a constant difference from the Berlin observations must 

 most probably be referred to the assumed position of the star. 



