02471+3744 A  1821AB

 
 
02h 47m 08.57s +37 43' 44.7" P.A. 166 sep 5.3 mag 8.53,14.70 Sp B9 dist. 549.45 pc (1792.31 l.y.)
 
 
Coord 2000
02471+3744
Discov num
A  1821
Comp
AB
Coord arcsec 2000
02 47 08.57 +37 43 44.7
Date first
1908
Date last
2016
Obs
5
Pa first
164
Pa last
166
P.A. Now (θ)
166°
Sep first
5.0
Sep last
5.3
Sep. Now (ρ)
5.3"
Mag pri
8.53
Mag sec
14.70
delta mag (ΔM)
6.17
Spectral class
B9 (blue-white)
Pri motion ra
+000
Sec motion ra
Pri motion dec
-002
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
02471+3744 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 55874 02471+3744 A 1821 AB 1908 2016 5 166 5.3 8.53 14.70 6.17 <===
Show 55874 02471+3744 A 1821 AC 1908 2001 5 44 10.6 8.53 13.20 4.67
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Perseus
SAO
55874
HIP
13001
Tycho2
2845-02131-1
HD
17239
BD
BD+37 632
Distance
549.45
Distance ly
1792.31
last precise pa
165.6
last precise sep
5.27
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
02471+3744 A 1821 AB 1999 4 165 5.0 8.50 14.70 B9 D 024708.57+374344.7

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