21372+4739 BEM  39BC

 
 
21h 37m 11.38s +47 39' 28.3" P.A. 124 sep 6.5 mag 11.20,12.70
 
 
Coord 2000
21372+4739
Discov num
BEM  39
Comp
BC
Coord arcsec 2000
21 37 11.38 +47 39 28.3
Date first
1898
Date last
2016
Obs
6
Pa first
110
Pa last
124
P.A. Now (θ)
124°
Sep first
7.1
Sep last
6.5
Sep. Now (ρ)
6.5"
Mag pri
11.20
Mag sec
12.70
delta mag (ΔM)
1.5
Spectral class
Pri motion ra
+000
Sec motion ra
Pri motion dec
+001
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
21372+4739 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 21372+4739 BEM 39 AB 1894 2016 8 329 15.7 10.06 11.20 1.14
Show 21372+4739 BEM 39 AD 1898 2016 6 7 25.9 10.06 13.10 3.04
Show 21372+4739 BEM 39 AE 1898 2016 6 124 25.1 10.06 13.16 3.10
Show 21372+4739 BEM 39 BC 1898 2016 6 124 6.5 11.20 12.70 1.50 <===
Quintuple system
5 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
124.3
Precise sep
6.532
Cdsa2 id
BEM 39 BC
Constellation
Cygnus
Ra deg
21.61982777777778
De deg
47.65786111111111
last precise pa
124.3
last precise sep
6.532
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21372+4739 BEM 39 BC 1998 3 124 6.6 11.20 11.70 D 213711.38+473928.3
21372+4739 BEM 39 BC 2011 4 125 6.6 11.20 11.70 D 213711.38+473928.3
21372+4739 BEM 39 BC 2016 6 124 6.5 11.20 12.70 213711.38+473928.3

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