304 m ) o ( 
& fit Longitudo Terræ e Sole vifa AS(J=0^ 
SO = Uy 52 = 1 ?, 02. — w demifibque ab 0 nor- 
mali OP ad axem S/^ erit OP — u Sin. (f), SP — 
u Cof. (J) , PX — X — u CoL (f) , 02^ — z,* -b 
u Cof. 0\^ -h y — u Sin. 0 T & SY^ = 
S2^ — — z' -r y'^ , Sit jam mafia Telluris 
= T, mafia Lunæ — L ^ T L — 0^ . mafia Solis 
= 9, & per reloluciones virium quibus punSlum 
Z urgetur fecundum direftiones ternas XS ^ YXy 
2Y facile invenitur illud urgeri fecundum X^S* vi == 
»S’a,’ 0(x — 21 Cof (f) ) Ü Cof. 0 
_ -{ ^ fecundum di* 
-U5 7t^ 
Sy 0 {y — u Sin. 0) 
reaionem FX vi = + 
-y3 227 5 
4- 
0 Sin. 0 
u 
-, « ^2; 0% 
& fecundum 2 Y vi =r j- — ■ 
v'^ rp'^ 
unde fi fit elementum temporis conftans, & a 
defignet alium confiiantem a tempore dependentem 
orientur per principia mechanica tres aequationes 
\otddx Sx O(x^ziCoL0) 
fequentes , i :o — 7 “ — -7 — . 4 - 
0 Cof. 0 
dr' 
p.-. 
— 0 . 2:0 
addy Sy 
dT~ 
4 — ^4" 
rp'^ 
0 {y — u Sin. 0) 
rp'^ 
0 Sin. (2) ^ addz Sx Oz 
4^ ;; — — O 5 & 3*0 , — 4^ '~r 4“ — — ^* 
u 
dr^, 
V 
rp 
Ut jam idonea formula temporis inveniatur 
pro dT fubftituenda , eadem methodo verum ad 
coordinatas SP & PO applicata utitur , ita ut fiat 
a{ddu — ud0^) 54^0 ^a\udd0-Yidud0') 
dr'^ ’ dr^ 
= 0. 
