20331+4144 CAN 45 AD

Coord 2000	20331+4144		Discov num	CAN  45		Comp	AD		Coord arcsec 2000	20 33 05.27 +41 43 36.8
Date first	2008		Date last	2008		Obs	1
Pa first	238		Pa last	237.5		P.A. Now (θ)	237.5°
Sep first	8.0		Sep last	8.04		Sep. Now (ρ)	8.04"
Mag pri	8.60		Mag sec	16.90		delta mag (ΔM)	8.3		Spectral class	B1V (blue-white)
Pri motion ra			Sec motion ra
Pri motion dec			Sec motion dec
Notes	K (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 Nature of this double is uncertain.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			20 33 05 +41 43 37	CAN 45 AB	2008	2	167	1.8	8.60	12.80	4.20
Show			20 33 05 +41 43 37	CAN 45 AC	2008	2	32	7.4	8.60	14.90	6.30
Show			20 33 05 +41 43 37	CAN 45 AD	2008	1	238	8.0	8.60	16.90	8.30		<===
Show			20 33 05 +41 43 37	CAN 45 AE	2008	2	159	8.2	8.60	16.00	7.40
Show			20 33 05 +41 43 37	CAN 45 AF	2008	2	158	8.3	8.60	15.00	6.40
Show			20 33 05 +41 43 37	CAN 45 AG	2008	1	287	10.6	8.60	15.50	6.90
Show			20 33 05 +41 43 37	CAN 45 AH	2008	2	114	11.5	8.60	14.70	6.10
Show			20 33 05 +41 43 37	CAN 45 AI	2008	2	86	12.6	8.60	15.60	7.00
Show			20 33 05 +41 43 37	CAN 45 AJ	2014	6	122	12.3	8.60	14.80	6.20
Show			20 33 05 +41 43 37	CAN 45 AK	2014	4	347	15.0	9.30	15.80	6.50

11-fold system
11 estimated visually detectable stars in this system

Constellation

Cygnus