02554+2743 HO  316

 
 
02h 55m 22.01s +27 43' 20.7" P.A. 289 sep 20.6 mag 6.84,12.70 Sp B9 dist. 168.63 pc (550.07 l.y.)
 
 
Coord 2000
02554+2743
Discov num
HO  316
Comp
Coord arcsec 2000
02 55 22.01 +27 43 20.7
Date first
1891
Date last
2010
Obs
7
Pa first
284
Pa last
289
P.A. Now (θ)
289°
Sep first
19.8
Sep last
20.6
Sep. Now (ρ)
20.6"
Mag pri
6.84
Mag sec
12.70
delta mag (ΔM)
5.86
Spectral class
B9 (blue-white)
Pri motion ra
+003
Sec motion ra
Pri motion dec
-017
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Aries
SAO
75638
HIP
13609
Tycho2
1789-00117-1
HD
18104
BD
BD+27 455
Distance
168.63
Distance ly
550.07
last precise pa
289
last precise sep
20.62
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
02554+2743 HO 316 1997 5 290 20.6 6.70 12.70 B9 D 025522.01+274320.7
02554+2743 HO 316 2001 6 288 20.2 6.70 12.70 B9 D 025522.01+274320.7
02554+2743 HO 316 2010 7 289 19.7 6.84 12.70 B9 025522.01+274320.7

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