20231+4047 J   787CD

 
 
20H 23M 08.07S +40 46' 51.9" P.A. 292 SEP 25.3 MAG 13.00,12.40
 
 
Coord 2000
20231+4047
Discov num
J   787
Comp
CD
Coord arcsec 2000
20 23 08.07 +40 46 51.9
Date first
1917
Date last
2003
Obs
4
Pa first
289
Pa last
292
P.A. Now (θ)
292°
Sep first
24.6
Sep last
25.3
Sep. Now (ρ)
25.3"
Mag pri
13.00
Mag sec
12.40
delta mag (ΔM)
0.6
Spectral class
Pri motion ra
+008
Sec motion ra
+001
Pri motion dec
-011
Sec motion dec
-007
Notes
N (See Notes)
rPM=0.593
Nature of this double is uncertain.
 
 
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 2003 4 112 9.5 10.50 13.00 2.50
Show 20231+4047 J 787 AD 1917 2003 4 293 15.9 10.50 12.40 1.90
Show 20231+4047 J 787 CD 1917 2003 4 292 25.3 13.00 12.40 0.60 <===
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Cygnus
last precise pa
292.2
last precise sep
25.26