20312+4137 J  1196

 
 
20h 31m 08.22s +41 35' 32.6" P.A. 9 sep 4.7 mag 11.30,12.20 Sp G
 
 
Coord 2000
20312+4137
Discov num
J  1196
Comp
Coord arcsec 2000
20 31 08.22 +41 35 32.6
Date first
1915
Date last
2015
Obs
8
Pa first
16
Pa last
9
P.A. Now (θ)
Sep first
3.8
Sep last
4.7
Sep. Now (ρ)
4.7"
Mag pri
11.30
Mag sec
12.20
delta mag (ΔM)
0.9
Spectral class
G (yellow)
Pri motion ra
-015
Sec motion ra
+010
Pri motion dec
-084
Sec motion dec
+021
Notes
rPM=1.265
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
9.2
Precise sep
4.7
Constellation
Cygnus
Tycho2
3161-00600-1
Gaia DR2
55891837952
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20312+4137 J 1196 2006 5 4 5.0 9.50 10.50 D 203108.22+413532.6
20312+4137 J 1196 2010 7 11 4.8 11.30 12.20 G 203108.22+413532.6
20312+4137 J 1196 2015 8 9 4.7 11.30 12.20 G 203108.22+413532.6

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