PERTVRBATI PLANETARVM. 15? 



Tt binac ncqiiationcs priorcs contrahiintur in has 

 formas : 



-\ dv+vd(^.' — zmadr'{\, -i-«[Q.-R)) 



quae Iblae totuin ncgotium conficcrent, fi corpus Z 

 in coJem plano mouctur , in quo corpus pcrturbans 

 S circumfcrri afllimimus ; rcliquae acquationcs ad 

 motum , \t dicitur , latitudinis pcrtinent , carum- 

 que rcfolutio multo minoribus laborat difficultatibus, 

 vnde omnc fhidium in binis prioribus efl confumcn- 

 dum. Indc autcm climinato elemeuto dr haec 

 nascitur iicquatio 



(D - ;j P) (^^;' -f- '■J c' </4)') =: -yVcf)' (;-;)-« Cq- R)) 



Tnde eliiitur : 



^/-yVfD-^P) 



d(^ — 



vV [v-^^f -nvv[Qj-K)-'D->r-H?) 

 V V d v* 



hincque porro ima drzi- 



^ v-~~nvv[(l-K)-D+nF 



V d V 



feu adrv zmazi: zr, — ;t~; — \t~. r, 7^ — .ttt 



y {-B-^-nV + v—vvO+ni^-nK}) 



quarum formularum integratio forct in promtu , fi 

 fradio « vel perturbationcs in nihilum abircnt. 



XXIV 

 AcqNationcm illam hac forma repraefcntemus: 



t:y(D-«Pjz::^4)y(-;+«(R-Q.j4;-^l^') 



V 2 ex 



