[ 43 8 J 
different fatellites of the fame planet, is as the times 
of their revolutions about the planet. 
Thus the motion of the nodes of the 3d fatellite, 
in the fpace of 3 years, is 
3 X 7f x I So deg. 
365-4 x 12 8 
The motion of the nodes of the 2d is ■ ^ X ^ 2T ~ 
3°5t x 12 
180 deg. 
~ 8 ~' 
3 x ij 
3 b 5i 
12 
The motion of the nodes of the iff is 
180 deg. 
8 ' 
Problem XVII. 
42. To find the motion of the nodes of the 5 th fatel- 
lite of Saturn, caufed by the fun , during the tune 
of t of the revolution of this fatellite about the 
fun. 
Conformably to the preceding Problem we /hall 
have, by putting inftead of /, 79^ days ; inftead of 
7^365! x 30 days, which is nearly the time of the 
revolution of this fatellite about the fun, and we fhall 
have-i4- 7 -2L x '** 
3651 x 3 ° 8 
43. In the fame manner may be found the motion 
of the nodes of all the reft of Saturn's fatellites. 
Pro- 
