20328+4126 CAN 41 AD

Coord 2000	20328+4126		Discov num	CAN  41		Comp	AD		Coord arcsec 2000	20 32 45.46 +41 25 37.4
Date first	1998		Date last	2012		Obs	3
Pa first	309		Pa last	308.6		P.A. Now (θ)	308.6°
Sep first	13.3		Sep last	11.775		Sep. Now (ρ)	11.775"
Mag pri	7.40		Mag sec	12.90		delta mag (ΔM)	5.5		Spectral class	O8V (blue)
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 32 45 +41 25 37	CAN 41 AB	2008	1	279	8.3	7.40	14.20	6.80
Show			20 32 45 +41 25 37	CAN 41 AC	2008	1	20	8.3	7.40	14.90	7.50
Show			20 32 45 +41 25 37	CAN 41 AD	2012	3	309	11.8	7.40	12.90	5.50		<===

Quadruple system
4 estimated visually detectable stars in this system

Constellation

Cygnus