20391+3103 J  1238

 
 
20h 39m 13.29s +31 03' 02.9" P.A. 18.00 sep 3.6 mag 11.40,12.40 Sp G5
 
 
Coord 2000
20391+3103
Discov num
J  1238
Comp
Coord arcsec 2000
20 39 13.29 +31 03 02.9
Date first
1900
Date last
2015
Obs
10
Pa first
16
Pa last
18
P.A. Now (θ)
18°
Sep first
3.4
Sep last
3.6
Sep. Now (ρ)
3.6"
Mag pri
11.40
Mag sec
12.40
delta mag (ΔM)
1
Spectral class
G5 (yellow)
Pri motion ra
-006
Sec motion ra
+003
Pri motion dec
-046
Sec motion dec
-011
Notes
N (See Notes)
rPM=0.779
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
17.8
Precise sep
3.61
Constellation
Cygnus
SAO
70324
Tycho2
2686-00323-1
Gaia DR2
27213463424
HD
334777
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20391+3103 J 1238 2000 7 22 3.7 9.60 10.50 D 203913.29+310302.9
20391+3103 J 1238 2002 8 17 3.6 9.60 10.50 D 203913.29+310302.9
20391+3103 J 1238 2015 9 18 3.6 11.40 12.40 G5 N 203913.29+310302.9

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