20315+5611 HJ 1540AC

 
 
20h 31m 29.57s +56 10' 48.0" P.A. 130 sep 40.7 mag 8.52,13.48 Sp B5 dist. 970.87 pc (3166.98 l.y.)
 
 
Coord 2000
20315+5611
Discov num
HJ 1540
Comp
AC
Coord arcsec 2000
20 31 29.57 +56 10 48.0
Date first
1905
Date last
2015
Obs
9
Pa first
131
Pa last
130
P.A. Now (θ)
130°
Sep first
41.8
Sep last
40.7
Sep. Now (ρ)
40.7"
Mag pri
8.52
Mag sec
13.48
delta mag (ΔM)
4.96
Spectral class
B5 (blue-white)
Pri motion ra
-002
Sec motion ra
-006
Pri motion dec
-005
Sec motion dec
+005
Notes
rPM=1.379
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
130
Precise sep
40.727
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 AC 1999 2 130 40.6 8.80 12.50 B5 D 203129.57+561048.0
20315+5611 HJ 1540 AC 2003 3 130 40.8 8.80 12.50 B5 D 203129.57+561048.0
20315+5611 HJ 1540 AC 2013 4 130 40.8 8.52 13.48 B5 203129.57+561048.0
20315+5611 HJ 1540 AC 2015 5 130 40.8 8.52 13.48 B5 203129.57+561048.0

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