21058+3929 A  2691CD

 
 
21h 05m 43.12s +39 29' 48.5" P.A. 275 sep 6.4 mag 11.81,14.30
 
 
Coord 2000
21058+3929
Discov num
A  2691
Comp
CD
Coord arcsec 2000
21 05 43.12 +39 29 48.5
Date first
1920
Date last
2002
Obs
6
Pa first
274
Pa last
275
P.A. Now (θ)
275°
Sep first
6.0
Sep last
6.4
Sep. Now (ρ)
6.4"
Mag pri
11.81
Mag sec
14.30
delta mag (ΔM)
2.49
Spectral class
Pri motion ra
+001
Sec motion ra
Pri motion dec
-007
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
21058+3929 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 21058+3929 A 2691 AB 1913 2000 6 217 2.7 9.71 13.60 3.89
Show 21058+3929 A 2691 AC 1892 2016 10 314 27.4 9.71 11.81 2.10
Show 21058+3929 A 2691 CD 1920 2002 6 275 6.4 11.81 14.30 2.49 <===
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
274.9
Precise sep
6.375
Cdsa2 id
A 2691 CD
Constellation
Cygnus
Ra deg
21.09531111111111
De deg
39.496805555555554
last precise pa
274.9
last precise sep
6.375
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21058+3929 A 2691 CD 1998 5 275 6.3 11.81 14.30 D 210543.12+392948.5
21058+3929 A 2691 CD 2002 6 274 6.1 11.81 14.30 D 210543.12+392948.5

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