"^ ) 324- ( ^f%^ 



modo fe habebunt: 



P = 21 4-/A d^-o -^fd 9{ry-qz), 

 Q =: ^ -H/B d9=zo-{-fd^pz--rx), 

 K — (S-{-/Cd^-€-\-/d9{qx-pj), 

 At Ycro quia declinatio orbitae pracfentis a plano A O B 

 efl quam minima, ira vt fumi poflit 51 — 0, pro hoc 

 tempore erit 



?=/ryd6, 

 Q^ = -/r X d^ et 

 R^^-^^/dHqx-py), 

 quae integralia ita capi oportet, M in ipfa epocha, tM 

 ^ — o, euanefcanr. Vnde patet, quia ipfac vires pertur- 

 bantes p, ^, r funt quafi infinitc paruac, fingulas has for- 

 mulas integrales qnantitates quam minimas exprimere. 



§. 51. Refcrat nunc re^fla ON pro tempore ab 

 epocha elapfo lincam nodorum, qua planum , in quo cor- 

 pus nunc mouetur, planum flxum AOB interfccat; at- 

 qne pofito angulo A O N ::::= 4 ^^ nuitua inchnatione =:•>), 

 qnam vt infinite paruam fpcdare hccbit, formulac ante 

 inuentae pro hoc cafu dabunt 



tang.^;=:{-iii-;ct 



•vbi, quia qnaeftio e(l de vah)re quam minimo tang.^, 

 in denominatorc pars integralis prae conflante € reiici 

 potell, ita vt fit 



tang. 7J = - muJJ^l^JdJ^J^lI^. 

 Inde autcm fit 



