21121+4543 BU  160BC

 
 
21H 12M 09.28S +45 41' 21.1" P.A. 114 SEP 6.5 MAG 11.40,11.60
 
 
Coord 2000
21121+4543
Discov num
BU  160
Comp
BC
Coord arcsec 2000
21 12 09.28 +45 41 21.1
Date first
1873
Date last
2011
Obs
15
Pa first
140
Pa last
114
P.A. Now (θ)
114°
Sep first
2.0
Sep last
6.5
Sep. Now (ρ)
6.5"
Mag pri
11.40
Mag sec
11.60
delta mag (ΔM)
0.2
Spectral class
Pri motion ra
-001
Sec motion ra
+005
Pri motion dec
-003
Sec motion dec
-005
Notes
N (See Notes)
rPM=0.894
This double is not physical.
 
 
21121+4543 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 50561 21121+4543 BU 160 AB 1873 2011 14 155 57.1 8.88 10.73 1.85
Show 21121+4543 BU 160 BC 1873 2011 15 114 6.5 11.40 11.60 0.20 <===
Show 21121+4543 ES 9005 BD 1913 2011 7 84 22.4 11.40 13.90 2.50
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Cygnus
last precise pa
113.5
last precise sep
6.46