21161+2951 BWL  56AD

 
 
21H 16M 05.81S +29 51' 50.8" P.A. 200 SEP 2.6 MAG 7.86,18.40 SP M4.0
 
 
Coord 2000
21161+2951
Discov num
BWL  56
Comp
AD
Coord arcsec 2000
21 16 05.81 +29 51 50.8
Date first
2011
Date last
2012
Obs
2
Pa first
196
Pa last
200
P.A. Now (θ)
200°
Sep first
2.4
Sep last
2.6
Sep. Now (ρ)
2.6"
Mag pri
7.86
Mag sec
18.40
delta mag (ΔM)
10.54
Spectral class
M4.0 (red)
Pri motion ra
+206
Sec motion ra
Pri motion dec
+035
Sec motion dec
Notes
N U K (See Notes, Proper motion indicates non-physical, K-band or other infrared magnitudes)
This double is not physical.
 
 
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
199.5
last precise sep
2.59