21023+3931 WRD   4EH

 
 
21h 02m 29.25s +39 30' 38.3" P.A. 159 sep 37.4 mag 10.88,12.84
 
 
Coord 2000
21023+3931
Discov num
WRD   4
Comp
EH
Coord arcsec 2000
21 02 29.25 +39 30 38.3
Date first
1951
Date last
2015
Obs
6
Pa first
160
Pa last
159
P.A. Now (θ)
159°
Sep first
37.3
Sep last
37.4
Sep. Now (ρ)
37.4"
Mag pri
10.88
Mag sec
12.84
delta mag (ΔM)
1.96
Spectral class
Pri motion ra
-003
Sec motion ra
+025
Pri motion dec
-006
Sec motion dec
-018
Notes
N (See Notes)
rPM=0.989
This double is not physical.
 
 
21023+3931 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 70818 21023+3931 H 4 113 AB 1783 2017 35 300 18.9 6.62 9.49 2.87
Show 70818 21023+3931 H 4 113 AC 1876 2012 10 248 26.7 6.62 12.50 5.88
Show 70818 21023+3931 SMY 6 AD 1862 2015 8 141 57.0 6.62 12.61 5.99
Show 70818 21023+3931 SMY 6 AE 1862 2015 9 87 96.1 6.62 10.88 4.26
Show 70818 21023+3931 WRD 4 AF 1875 2015 5 223 101.8 6.62 12.45 5.83
Show 70818 21023+3931 WRD 4 AG 1875 1875 1 230 95.0 6.62 13.50 6.88
Show 70818 21023+3931 FYM 114 AI 2000 2012 3 277 41.1 6.62 15.20 8.58
Show 70818 21023+3931 WRD 4 ED 2000 2015 4 230 77.7 10.88 12.61 1.73
Show 70818 21023+3931 WRD 4 EH 1951 2015 6 159 37.4 10.88 12.84 1.96 <===
Ninefold system
9 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
159.4
Precise sep
37.366
Constellation
Cygnus
SAO
70818
Tycho2
3172-00265-1
last precise pa
159.4
last precise sep
37.366
 
 
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 EH 2012 4 160 37.5 10.88 12.08 N 210229.95+393038.4
21023+3931 WRD 4 EH 2015 6 159 37.4 10.88 12.84 N 210229.25+393038.3

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