20334+4109 CAN 56 AC

Coord 2000	20334+4109		Discov num	CAN  56		Comp	AC		Coord arcsec 2000	20 33 23.46 +41 09 12.9
Date first	2005		Date last	2005		Obs	3
Pa first	308		Pa last	307.7		P.A. Now (θ)	307.7°
Sep first	4.4		Sep last	4.43		Sep. Now (ρ)	4.43"
Mag pri	6.10		Mag sec	9.20		delta mag (ΔM)	3.1		Spectral class	O5.5V (blue)
Pri motion ra			Sec motion ra
Pri motion dec			Sec motion dec
Notes	V K (Proper motion indicates 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 physical.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			20 33 23 +41 09 13	WSI 67 AB	2012	8	326	0.7	12.50	12.90	0.40
Show			20 33 23 +41 09 13	CAN 56 AC	2005	3	308	4.4	6.10	9.20	3.10		<===
Show			20 33 23 +41 09 13	CAN 56 AD	2014	7	269	11.7	6.10	11.30	5.20

Quadruple system
4 estimated visually detectable stars in this system

Constellation

Cygnus