PERTVRBATI PLANETARVM. 163 



\bi notctiir , ncglcdd cxccntricitatc orbitac folaris 

 fore uz::a ct d^z-dr, 



xxxr. 



Sit porro in Z luna , ciiius mafla ~C, ac 

 ponatur j:^n« exiflentc '^^^zzm^ quoninm an- 

 gulus clcmcntaris dx ex motu mcdio folis cfl: dc- 

 fumtus, ita, \t fit 9( — A ct £— B,' yndc prodit 



ri^—mn lcu wrr^, fiquidcm maffi folis B prac 

 iiiafla tcrrae A \i infinita fpcclari potclt. lam pro 

 loco hinae (latuatur : 



^ longitudo nodi afccndentis fcu angulus B A Nz:v|y 

 inclinatio orbitae lunac ad ecljpticam fcu YOZrca 

 et argumentum latitudinis feu NAZz:<r 



Tnde fit : 



longitudo lunae =iv^ + Ang.tang. (tang.frcof.u) 



et latitudo borcalis ~ Ang.fin.^fin.crfin. u). 



Dcinde fit diflantia lunae a tcrra AZr=i,' ct diflan- 

 tia lunae a fole SZmy, ac definitis hinc duobus 

 angulis jx et v vt fit 



cof [A -cofo-cof (^ — \4/)-4- fin. a- cof w fin. (^ — vj^) 



fin. V - fin. 0- cof.( — (p ) — cof. (jcof w fin. (^ — \\j) 



crit iv^wzzz-jv-^uu—zviizo^i.^y- feu w — y{v-v-{-uu 



— 21'ttC0f fx). 



XXXII. 



His pofitis fi ponamus pro temporc pracfente 



viz-r:—^:^ \t p dcnotet orbitac iunaris parame- 



X 2 trum 



