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
2015
Obs
5
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=1.22
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 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
 
 
Tycho2
3651-01077-1
last precise pa
292.3
last precise sep
25.279
 
 
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 CD 2003 3 292 25.3 7.48 13.10 N 202306.70+404801.6
20231+4047 J 787 CD 2015 5 292 25.3 13.00 12.40 N 202308.07+404651.9

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