the defending Node of SaturiT. 
or the difiance between the fun and the planet feen from the earths 
The di men fi ons of the elliptical orbit of the planet are fo far as- 
certain: d, that the logarithms of the difiance from the fun have 
not any material difference in the different tables. From the angle 
t, the diftance or the earth from the fun, and the diftance of the 
planet from the fun, the angle p is calculated to a Sufficient 
degree of accuracy. Thus, the 12th of July, by the difiances 
of Dr. Halley, p = o’ 2 7 5.9", and by the difiances of M. 
de la Lande =o° 2 / §9" ; the 8th of Auguft after Dr. 
Halley p — 2 43' 2 5 "> and after M. de la Lande p 
2° 43' 36"; the 27th of Auguft after Dr. Halley / = 
4° 14 io 7/ , and after M. de la Lande/ = 4° 14' 2S". The 
difference very Seldom will amount to 20 Seconds, and is of no 
con Sequence in this matter. From the obferved geocentric 
latitude of the angle at the fun = j, and the angle at the 
earth = /, the heliocentric latitude of the planet is found — 
tang. lat. geoc. X fin. s 
fin 7t ' * 
1784 
- 
Mean time at 
Copenhagen. 
b obferved helio- 
centric longitude. 
b obferved helio- 
centric latitude. 
h - / /, 
s * 0 / , // 
O / // 
July 12 
12 3 1 
9 20 37 29 
O 3 13B 
20 
1 1 2g 9 
9 20 5 i 53 
0241 
Aug. 1 
IO 38 85 
9 21 1 3 1 7 
0 1 34 
8 
1090 
9 21 26 2 
0 0 56 
21 
9 H 59 
9 2 i 49 2 7 
002 
27 
8 50 19 
922 012 
< 
0 
0 
0 
3 ' 
8 33 47 
9 22 7 3 2 
0 0 50 
Sept. 5 
8 13 45 
9 22 16 28 
0 1 2 1 
15 
7 33 45 
9 22 34 3 2 
0 1 59 
Oft. 8 
6 4 23 
9 2 3 16 i 5 
0 3 35 
\A When two heliocentric longitudes, 
and the corresponding northern and 
D JJL foutiiern latitude are given, the difiance 
of 
