20231+4047 J   787AD

 
 
20h 23m 07.30s +40 46' 55.2" P.A. 293 sep 15.8 mag 10.50,12.40 Sp B3
 
 
Coord 2000
20231+4047
Discov num
J   787
Comp
AD
Coord arcsec 2000
20 23 07.30 +40 46 55.2
Date first
1917
Date last
2015
Obs
5
Pa first
291
Pa last
293
P.A. Now (θ)
293°
Sep first
15.7
Sep last
15.8
Sep. Now (ρ)
15.8"
Mag pri
10.50
Mag sec
12.40
delta mag (ΔM)
1.9
Spectral class
B3 (blue-white)
Pri motion ra
-006
Sec motion ra
+001
Pri motion dec
-002
Sec motion dec
-007
Notes
N (See Notes)
rPM=1.217
This double is not physical.
 
 
20231+4047 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20231+4047 J 787 AB 1912 2003 4 165 2.6 10.50 11.40 0.90
Show 20231+4047 J 787 AC 1917 2015 5 112 9.5 10.50 13.00 2.50
Show 20231+4047 J 787 AD 1917 2015 5 293 15.8 10.50 12.40 1.90 <===
Show 20231+4047 J 787 CD 1917 2015 5 292 25.3 13.00 12.40 0.60
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
292.7
Precise sep
15.772
Constellation
Cygnus
SAO
49556
Tycho2
3156-01857-1
Gaia DR2
59999953024
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20231+4047 J 787 AD 2003 3 293 15.9 9.40 12.00 N D 202307.30+404655.2
20231+4047 J 787 AD 2015 5 293 15.8 10.50 12.40 B3 N 202307.30+404655.2

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