21023+3931 WRD   4AG

 
 
21h 02m 20.95s +39 30' 32.5" P.A. 230 sep 95 mag 6.62,13.50 Sp K3II-III
 
 
Coord 2000
21023+3931
Discov num
WRD   4
Comp
AG
Coord arcsec 2000
21 02 20.95 +39 30 32.5
Date first
1875
Date last
1875
Obs
1
Pa first
230
Pa last
230
P.A. Now (θ)
230°
Sep first
95.0
Sep last
95.0
Sep. Now (ρ)
95"
Mag pri
6.62
Mag sec
13.50
delta mag (ΔM)
6.88
Spectral class
K3II-III (yellow-orange)
Pri motion ra
+002
Sec motion ra
Pri motion dec
+001
Sec motion dec
Notes
N (See Notes)
Nature of this double is uncertain.
 
 
21023+3931 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 21023+3931 H 4 113 AB 1783 2017 34 300 18.9 6.62 9.49 2.87
Show 21023+3931 H 4 113 AC 1876 2012 10 248 26.7 6.62 12.50 5.88
Show 21023+3931 SMY 6 AD 1862 2012 7 141 57.1 6.62 12.61 5.99
Show 21023+3931 SMY 6 AE 1862 2012 8 87 97.0 6.62 10.88 4.26
Show 21023+3931 WRD 4 AF 1875 2012 4 222 102.2 6.62 12.45 5.83
Show 21023+3931 WRD 4 AG 1875 1875 1 230 95.0 6.62 13.50 6.88 <===
Show 21023+3931 FYM 114 AI 2000 2012 3 277 41.1 6.62 15.20 8.58
Show 21023+3931 WRD 4 ED 2000 2012 3 230 77.9 10.88 12.61 1.73
Show 21023+3931 WRD 4 EH 1951 2012 5 160 37.5 10.88 12.84 1.96
Ninefold system
9 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
230
Precise sep
95
Constellation
Cygnus
last precise pa
230
last precise sep
95
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21023+3931 WRD 4 AG 1875 1 230 95.0 6.62 12.46 K3II-III N 210229.95+393038.3
21023+3931 WRD 4 AG 2002 3 223 101.3 6.62 12.46 K3II-III N 210229.95+393038.3

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