JUPITER AND SATURN 



Secular variation of the Perihelion 



dw 

 It 



7'344302 

 — 1-141011 



117 



the two largest terms are 

 Le Verrier. 



7-358876 

 —I -143720 



6.203291 6-215156 



Inclination and Node : — Le Verrier introduces a quantity $ 

 {Les Annates, X., p. 188) for the lowest term of which he gives 

 — 1-1683473, whereas it should be — i -1676732, if the new value 

 of a is adopted. 



The calculation of the secular variation of the excentricity is 

 -given in more detail. It will be seen that a slight modification 

 •occurs in the coefficient of e', in so far as the first powers of the 

 .masses are concerned. 



I d B 



The chief figures for ^^ are as follows : — 



cos \p dt 



Log K = 1-2290342 (I -2292210 Le Verrier). 



Le Verrier. 



A reference to Les Annates XI, pp. 28 and 43, will easily identify 

 -each step shown. 



