XIV.] THE LATITUDE AND THE MOTION OF THE NODE. 67 



Hence 



2 = - '00034,02, qa + g 2 = '00014,49, 



and 



2 -(&-4) 2 = -7-31821, g -(&+4) 2 = -24'6809, 



whence 



c_ 2 = -'00004,650, 



c 2 = -00000,587. 



A second approximation to c_ 1; Cj gives 



[ - ( - 2) 3 + <7 ] c_,= - (7, 

 [ - (k + 2) 2 + (/] C, = - ((?, 



with the above values 



q 1 + q-f l + q l c,, = '01261,47, q l + q^. 1 + q 1 c 1 = '01261,03, 

 so that c_,= -'03698,00, 



c, = '00151,20. 



92 



