21051+3914 ES 1987

 
 
21h 05m 03.57s +39 14' 20.2" P.A. 352 sep 7 mag 10.19,11.80
 
 
Coord 2000
21051+3914
Discov num
ES 1987
Comp
Coord arcsec 2000
21 05 03.57 +39 14 20.2
Date first
1922
Date last
2010
Obs
5
Pa first
355
Pa last
352
P.A. Now (θ)
352°
Sep first
6.6
Sep last
7.0
Sep. Now (ρ)
7"
Mag pri
10.19
Mag sec
11.80
delta mag (ΔM)
1.61
Spectral class
Pri motion ra
+000
Sec motion ra
+028
Pri motion dec
-009
Sec motion dec
+003
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Cygnus
last precise pa
352.3
last precise sep
7.04
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21051+3914 ES 1987 1998 3 354 7.0 10.19 11.80 D 210503.57+391420.2
21051+3914 ES 1987 2002 4 354 7.0 10.19 11.80 D 210503.57+391420.2
21051+3914 ES 1987 2010 5 352 6.6 10.19 11.80 210503.57+391420.2

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