21161+2951 BWL  56Aa,Ab

 
 
21H 16M 05.81S +29 51' 50.8" P.A. 48 MAG 8.50,8.80 SP M4.0
 
 
Coord 2000
21161+2951
Discov num
BWL  56
Comp
Aa,Ab
Coord arcsec 2000
21 16 05.81 +29 51 50.8
Date first
2011
Date last
2011
Obs
2
Pa first
355
Pa last
48
P.A. Now (θ)
48°
Sep first
0.1
Sep last
0.0
Sep. Now (ρ)
0"
Mag pri
8.50
Mag sec
8.80
delta mag (ΔM)
0.3
Spectral class
M4.0 (red)
Pri motion ra
+206
Sec motion ra
Pri motion dec
+035
Sec motion dec
Notes
N K (See Notes, K-band or other infrared magnitudes)
Nature of this double is uncertain.
 
 
21161+2951 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 21161+2951 BWL 56 Aa,Ab 2011 2011 2 48 0.0 8.50 8.80 0.30 <===
Show 21161+2951 LDS1053 AB 1936 2016 9 259 26.0 12.89 13.83 0.94
Show 21161+2951 BWL 56 AC 2011 2012 2 77 3.4 7.86 20.10 12.24
Show 21161+2951 BWL 56 AD 2011 2012 2 200 2.6 7.86 18.40 10.54
Show 21161+2951 BWL 56 AE 2011 2012 2 226 4.4 7.86 19.40 11.54
Show 21161+2951 BWL 56 BF 2010 2011 2 233 3.5 8.66 23.10 14.44
Septuple system
6 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Cygnus
last precise pa
47.8
last precise sep
0.05