54 LECTURES ON THE LUNAR THEORY. [LECT. 



And 



6. = 2- --f a.., + 4 /Q M ~ H ~ ^ (n -p)(l+ 6.) a, 

 3n-2it'-p (3n 2n'p)-^ 



n n' . , n' 2 







3n -2n' 



a -00783,011 





4, -, (n -)(!+ 6.) CL "00327,988 



^ ,-(-*>)//. -00232,283 





6 B = -01551,37 



Second Approximation,. The complete equation for n p is, 



ii r fi f yi 



- 1>) S - 4 s +85+12- - 6 S ( 1 + 6.) + 2 (n - n') (n - 2ri +p) 



(.*' *V tJ 



9 u 3 



+ - t [83i + 2 M ] + ^ n"~ [6 a + &J + 2 (w - n') (3n - 2n' - 



a Ct 



?l 

 + 4 - 



/fr 



- 4 ^ ( w ~ n/ ) ( 3n ~ 2n/ - 



3 [6 n -6J=0. 



n p L 



-1-15842,8 



a 3 



nw 

 12- -&,(! + &,) -00080,8 







6,6J - -00520,1 



9 a r 



- 5L a * a a + c VV] -00708,4 



* Cv 



g 



-'-[6 31 + 6J -00406,9 



Zi 



2(n- n') (3n - 2n 7 -p) [a^ - 6,6 J -00048,2 



~ '00397,5 



