184 
Mr. Ivory on a new Method of deducing 
i == 28 25 49 
h = 124 51 1 
}f= 345 29 34 
h' =154 o 41 
log. £ = 0-042397 
log. /3 = 8-457324 
cos. y = 9-941140 
And the principal formulas of the orbit will be 
i-^=z 0-98399 — num. (0-244576) . f + num. (0-084795) . 
f'= num. (0-079127) f + num. (8-457324) . — 0-029365 
= 0-988192 — num. (0-104392) • f + 
0 98 1987 — num. (0-226675) . + f'” 
V = 0-963404 — num. (9-683982) . f 
— num. (9-967035) . f'+ num. (9-941140) 
In order to shorten calculation, I shall assume o = 0-51 
which is very near the true value, as will appear from the 
former computation of this orbit : then 
r°’== 0-40450 . . . log. 9-6069185 
9-8034592 
log. H = 9-4103777 
log- 9-841343 
= 0-599714 
r'" = 0-294039 
V = 0*382873 
7 )^ = — 2V = 0*128005 
a® = 2r“ + 2r'" = 1-787506 . . . log. 0*2522476 
log. a — 0-1261238 
^ i • 
T — r ( 2 
+ 77 • ?• = 1'02059 
X 1*02059 = — 0*002888. 
