5 oy 
-= 0. Si jam d-enotet t anomaliam Solis mediam , 
& fit K excentricitas Solis , erit ?/ = i + ^ Cof. 
4) = ^ — i>i Sin. fi | fit longitudo Terræ media, 
du ddu 
unde dt^dt^ — = — jc Sin. ^ — — = ■ — x Cof. t 
dt , dt^ 
d(p ddCp 
-— — i — 2X Cof. =: 2xSin. t. Per fubftitu- 
dt dt^ 
tionem horum valorum in sequationibus inventis 
habetur a (2 xCof. t — i)=(vS-hO)(2X Cof. — r), 
ud(p * 
ainde ä 0 , & propterea ddu = 
d Î 
I idud(p 
— —, & udd<p = 0, Ex his æquatio- 
u d t 
nibus, aliunde etiam cognitis, verum quæ hoc mo- 
do reduêtæ dabunt valorem ipfius deinde dedu- 
d .0 
= Confl:. Subftituendo jam dt pro dr 
citur 
dt 
lervata ejus [menfura , nec non S’ -j- 0 pro ä, & 
S . O 
S + 0 
= V 5 provenient tres æquatio- 
S4-O 
ddx {JLX {x — u CoÙ 0 ) 
nes fequentes, 1:0 --7-^' + — t 
4 - 
V Cof. 0 
2:0 
dt^ 
ddy 
ÏX 
n?”* dt^ 
V Sin. 0 ~ ddz 
4- 3:0 
u’‘ dt^ 
fiy V (y — u Sin. (b) 
4 r 4 ; 
7 V^ 
fJiZ 'VZ 
— |- — - »q-> — — 0 , 
\ 
V ^ 
w 
.r 
Loco coordinatarum haflenus adhibitarum x 
& y , quæ totæ evanefcere pofiunt , ad alias coor- 
dinatas aequationes inventas reducendas fore pro- 
VOL. IV. Q q po- 
