PERTFRBETFR ACCVRATIVS INQVIRnVR 435 



ftantia aphelii a fole AS— /Zk ■ Verum pofito (f) 

 — 180°, fiet diftantiii perihelii a fole ES— cIh/j> ^'"'^^ 

 axis^transiierfiis A B zr c/_! ^ ^ , et diftantia fbcorum — Hzkk 



porroque axis coniugatus ~ :^ ^cc-kk) ^^ parameter rz 2 ^ 

 Yti afTnmfimus. 



§. 8. Acccdente autem vi lunae , cum ex priori 

 aequatioue fit . 



2dz^(p-\-.zd^'(p =r —\ndt' fin. ^, 

 crit ob n numerum valde paruum proxime filtem 



zzd(pzizkdt—cdty imc. 

 et quia orbita terrae fere eft circularis , fi pro z pona- 



tur t', erit d(^ziz.-]^ ^ cuius aberratio a veritate tam 

 eft parua , vt in termino per fe minimo '^ndtHm.^ dis- 

 crimen fenfibile non producat. Simili modo in hoc ter- 

 mino ratio d^ ad d<^ cenferi poteil conftans , fcilicet ra 

 tione motus medii Uinae a fole ad motiun medium folis 

 quae ratio cum fit 12 , 358314 : i , ponatur compend i i 

 caufi i~ 12, 368314 eritque^O — zVCj) proxime. Mul- 

 tiplicetur nunc aequatio per z erit 



zzdzd(^-\-zzdd<^ — ~ Inzdffm.O. 

 Hic autem in termino per fe minimo i«s^r'fin. ponatu 

 z^c , et loco dt fcribatur ^' zz %^ critque 



2Zdzd(p-i-Zzdd<p=Z-~^i^y2C 



cuius integrale ob ^ if conftans cft : 



zzd(p=:cdtVlmc-{-^^°^y — 

 feu zzd(p-cdty\mc-\- ^^^Vi mc 



Iiia Ea 



