40ft fiE MOrr nOTiORFM IFNAZ 



f 1 1. Aeqnatio autem £r — ^j^^^p^^^^gi^—^ , fi im. 

 gretiir , dabit r — : A cof. ^^f-z^ , vnde fit cof. r :s: 

 tn^-o) ) eritque r angulus , quenm fol circa terram iattl 

 a perigaeo defcripfiit , fi enim ponatur angulus r — o 



fiet cof r— 1 z^ ^;?^:^;: et i; — y— y^Tirn ==: « - V 

 (dr^-tf^), quae eil dillantia perigaei a terra. Qiiare fi 

 pundlum A orbitae folaris denotet perigaeum , ex angil' 

 lo AGF rr r feU anomalia vera inuenietur hinc diftantii 

 folis a terni v — v./-h-Jw.-'- ^) ^^^^^^ ^^ excentricita» 

 y ^ flatuatur =z n -^ fict i; zrr -^—jrr- Maneat V ^* 

 tz n , erit « — 7— ^ , atque altera aequatio tranfibit iA 

 hanc 



•* ••■ — ' cV( — -ju-^iuv — -uv-\-mivvl 



Irnde fit : 



r_^dv ^_ 1 



feu/^:,,— -;o^ = vu=^ A co( .-^-^ V ( - /^ Z. -4- 



i^y -{i.-nn)v'). Sit A fm. :^ir^;^t^ — w erit i; — 

 *^-^ ety(-^^4-2^^-(i-«/0^') = ^.^"d^ 

 fit T ^ " T — I GOl. (j3 liue 1 ~~z 3 



{,— ri;i)ie (i-72n)2C (,-?w)-.!C 



( a) -r « i^(?y. w ) , conftans autem addi debet , vt pufitO 

 r — G feu V -- 7:^ tcimpus euanefGat ^ fafto antem li 

 ---!:-„ fit w =: A fin. - 1 =: - T , vnde oritur 



*r 3--^^ ( t -f- w - « cof (^ ) fit *■ + w -r $ , eril 



