44. A. W. Roberts——Computation of [ Nov. 25, 
¢ sin A = — 5 (8 cos @ — a sina) cos i 
«cos A = — Z (@ sin Q + a cos Q) 
q 
a 
1— 2 
The most important elements, Periodic time and Peri-astron passage. 
have to be determined by another method. 
From these formule we deduce the following : 
By ee ae = .. 47049296 — [8-69249] 
¥—-s) ~i@ =p) — .. 404596 = feeasong 
(y=) 4 4B) — .. 4214208 — oseeed 
Therefore : 
8°69249 
° 9 
tan 20 — 8°64325 
004924 
Ses Re Ae ee eee 
| 869249 
2 pei or : 
Ean ain 1288 98727] 
q hak 8°81978 
— 06604. 
Ane 6 
ee 
2 14203 — -06604 — -07599 
q 
. 0°30103 
g= = 8°88076 
07599 1-42027 
tan? 7 E 1°42027 
: 881978 
0:24005 
fan ¢ == 012009 | sce. ie ee ese eee eee 
(6 cos Q — a sin Q) cos 2 = *24536 = [9°38980] 
(B sin @ + a cos Q) = :09243 = [896581] 
(B cos Q — asin Q) cos 2 
8B sin Q + acos Q 
— [9°38980] — [8:96581] — [0-42399] 
tan A = 
