20255+5441 HJ 1516AC

 
 
20h 25m 32.81s +54 41' 03.1" P.A. 204 sep 50.3 mag 7.25,11.80 Sp B2Ve dist. 934.58 pc (3048.6 l.y.)
 
 
Coord 2000
20255+5441
Discov num
HJ 1516
Comp
AC
Coord arcsec 2000
20 25 32.81 +54 41 03.1
Date first
1912
Date last
2015
Obs
9
Pa first
204
Pa last
204
P.A. Now (θ)
204°
Sep first
49.5
Sep last
50.3
Sep. Now (ρ)
50.3"
Mag pri
7.25
Mag sec
11.80
delta mag (ΔM)
4.55
Spectral class
B2Ve (blue-white)
Pri motion ra
-003
Sec motion ra
-016
Pri motion dec
-005
Sec motion dec
-011
Notes
rPM=0.737
Nature of this double is uncertain.
 
 
20255+5441 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20255+5441 HJ 1516 AB 1828 2015 15 147 47.3 7.25 11.20 3.95
Show 20255+5441 HJ 1516 AC 1912 2015 9 204 50.3 7.25 11.80 4.55 <===
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
203.6
Precise sep
50.313
Constellation
Cygnus
SAO
32566
HIP
100744
Tycho2
3941-00371-1
Gaia DR2
95866220928
HD
194883
BD
BD+54 2348
Distance
934.58
Distance ly
3048.6
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20255+5441 HJ 1516 AC 1999 2 203 50.4 7.25 11.80 B2Ve D 202532.81+544103.1
20255+5441 HJ 1516 AC 2003 3 204 49.8 7.25 11.80 B2Ve D 202532.81+544103.1
20255+5441 HJ 1516 AC 2013 4 204 50.5 7.25 11.80 B2Ve 202532.81+544103.1
20255+5441 HJ 1516 AC 2015 5 204 50.3 7.25 11.80 B2Ve 202532.81+544103.1

If you need more information about this double, apply for a data request form to the WDS.