20334+4109 CAN 56 AD

Coord 2000	20334+4109		Discov num	CAN  56		Comp	AD		Coord arcsec 2000	20 33 23.46 +41 09 12.9
Date first	1998		Date last	2014		Obs	7
Pa first	270		Pa last	269.4		P.A. Now (θ)	269.4°
Sep first	11.5		Sep last	11.652		Sep. Now (ρ)	11.652"
Mag pri	6.10		Mag sec	11.30		delta mag (ΔM)	5.2		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