21161+2951 BWL 56 BF

Coord 2000	21161+2951		Discov num	BWL  56		Comp	BF		Coord arcsec 2000	21 16 03.79 +29 51 46.0
Date first	2010		Date last	2011		Obs	2
Pa first	231		Pa last	233.4		P.A. Now (θ)	233.4°
Sep first	3.3		Sep last	3.451		Sep. Now (ρ)	3.451"
Mag pri	8.66		Mag sec	23.10		delta mag (ΔM)	14.44		Spectral class	M3.3 (red)
Pri motion ra	+220		Sec motion ra
Pri motion dec	+046		Sec motion dec
Notes	N U K (See Notes, Proper motion indicates non-physical, K-band or other infrared magnitudes)

Visually invisible, K-band or other infrared star : Summary line gives K-band or other infrared (>1 micron) magnitudes This double is not physical.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			21 16 06 +29 51 51	BWL 56 Aa,Ab	2018	5	163	0.1	8.50	8.80	0.30
Show			21 16 06 +29 51 51	LDS 1053 AB	2016	12	259	26.0	12.89	13.83	0.94
Show			21 16 06 +29 51 51	BWL 56 AC	2012	2	77	3.4	7.86	20.10	12.24
Show			21 16 06 +29 51 51	BWL 56 AD	2012	2	200	2.6	7.86	18.40	10.54
Show			21 16 06 +29 51 51	BWL 56 AE	2012	2	226	4.4	7.86	19.40	11.54
Show			21 16 04 +29 51 46	BWL 56 BF	2011	2	233	3.5	8.66	23.10	14.44		<===

Septuple system
6 estimated visually detectable stars in this system

Constellation

Cygnus

Gaia DR2

1851868127125091968