20315+5611 HJ 1540AB

 
 
20h 31m 29.57s +56 10' 48.0" P.A. 346 sep 22.7 mag 8.52,11.90 Sp B5 dist. 970.87 pc (3166.98 l.y.)
 
 
Coord 2000
20315+5611
Discov num
HJ 1540
Comp
AB
Coord arcsec 2000
20 31 29.57 +56 10 48.0
Date first
1828
Date last
2015
Obs
11
Pa first
346
Pa last
346
P.A. Now (θ)
346°
Sep first
15.0
Sep last
22.7
Sep. Now (ρ)
22.7"
Mag pri
8.52
Mag sec
11.90
delta mag (ΔM)
3.38
Spectral class
B5 (blue-white)
Pri motion ra
-002
Sec motion ra
+002
Pri motion dec
-005
Sec motion dec
+010
Notes
rPM=1.522
This double is not physical.
 
 
20315+5611 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20315+5611 HJ 1540 AB 1828 2015 11 346 22.7 8.52 11.90 3.38 <===
Show 20315+5611 HJ 1540 AC 1905 2015 9 130 40.7 8.52 13.48 4.96
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
346.3
Precise sep
22.719
Constellation
Cygnus
SAO
32661
HIP
101256
Tycho2
3954-00366-1
Gaia DR2
33896230144
HD
239436
BD
BD+55 2417
Distance
970.87
Distance ly
3166.98
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20315+5611 HJ 1540 AB 1999 3 346 23.0 8.80 11.90 B5 D 203129.57+561048.0
20315+5611 HJ 1540 AB 2003 5 346 22.7 8.80 11.90 B5 D 203129.57+561048.0
20315+5611 HJ 1540 AB 2013 6 346 22.6 8.52 11.90 B5 203129.57+561048.0
20315+5611 HJ 1540 AB 2015 7 346 22.7 8.52 11.90 B5 203129.57+561048.0

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