520 ASTRONOMICAL PROBLEMS. 
Required N.P.D. and R.A. of this star 1st January 1896, 1820 and 
1755. 
angle P=18» — 10> 56™ 44883 Pa=27° 38’ 216 
= 105° 48’ 475 
log cos P= 9:4353694 PC=29° 25! 47” 
log tan Pa= 9°7190508 Ist arc= 8° 7 16” angle P>90° 
log tan Ist are=19°1544202 2nd arc=37° 33’ 3” 
log sin P= 9:9832452 log cos 2nd are= 9°8991707 
log sin Pa= 9°6664280 log cos Pa= _9°9473776 
196496732 198465483 
—log sin Ca= 9°8480349 —log cos Ist arc= _9°9956228 
log sin C= 9°8016383 log cos Ca= 9°8509255. 
i 20Q — 1° RB! QI. Ca=44° 48’ 33/6 
(1896—1887) 40’-9=0° 6’ 8’"1. On 1. 1. 87 C=39° 17' 49-6 
GS 8 
Om il, 1, O83 CS? 287 B77, 
log sin C= 9:8025836 log cos C= 98880338 44° 48’ 33’°6 
log sin Ca= 9°8480349 log tan PC= 9°7513982 Ist arc = 23° 33’ 16-6 
19°6506185 log tan Ist arc=19°6394320 2nd are=21° 15’ 17” 
—logsin Pa= 9°6671265 
log sin P= 9:9834920 
log cos 2nd arc= 99694057 
P=105° 41’ 52”; (180°—74° 18’ 8”) log cos PCO = 99399977 
=7h-gm 478-5 Se Rae ae 
. 19-9094034 
9x19 64 —log cos Ist arc= 9°9622177 
IRA SIG 7h BO AF NO HM USD) log cos Pa= 9:9471857 
By Naut. Alm.=10" 57™ 1856 
Diff= Ob Om 083 Calculated Pa=27° 41’ 15’°4 
By Naut. Alm.=27° 41’ 15-65 
Diff. OF OW O's 
On 1. 1. 87 angle C=39° 17’ 496 
— 409 x 67= 45’ 403 
On 1. 1. 20 angle C=388° 32’ 973 Ca=44° 48’ 336 
log cos O= 9°8933277 TB CRD SE ee 
log tan CP= 9°7513982 2nd arc=20° 59’ 523 
log tan Ist arc=19°6447259 log cos 2nd arc= 9-9701579 
log sin (= 9°7944916 log cos CP=_ 99399977 
log sin Ca= 9°8480349 19:9101556 
19:6425265 —log cos Ist arc= 9°9613636 
—log sin Pa=_9°6611912 log cos Pa= 9°9487920 
IE EET ae Calculated Pa=27° 16’ 48-88 
P=180° —'73° 19’ 19’°7 by Naut. Alm.=27° 16’ 466 
=P OP ae Difference= 0° 0 2/28 
+67x*719= 488-17 
R.A. =18)= 7h 7™ 308-89 
= 10> Be Bri 
by Naut. Alm. 10 52™ 315-99 
Diff. in 67 years Ob O™ 2888, 
