20345+4132 CAN 73 AC

Coord 2000	20345+4132		Discov num	CAN  73		Comp	AC		Coord arcsec 2000	20 34 29.60 +41 31 45.6
Date first	2008		Date last	2008		Obs	2
Pa first	109		Pa last	109.4		P.A. Now (θ)	109.4°
Sep first	5.2		Sep last	5.18		Sep. Now (ρ)	5.18"
Mag pri	6.70		Mag sec	13.70		delta mag (ΔM)	7		Spectral class	O7V (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 34 30 +41 31 46	CAN 73 AB	2008	2	180	2.3	6.70	11.60	4.90
Show			20 34 30 +41 31 46	CAN 73 AC	2008	2	109	5.2	6.70	13.70	7.00		<===
Show			20 34 30 +41 31 46	CAN 73 AD	2008	1	210	6.8	6.70	15.00	8.30
Show			20 34 30 +41 31 46	CAN 73 AE	2008	1	275	9.5	6.70	15.10	8.40

Quintuple system
5 estimated visually detectable stars in this system

Constellation

Cygnus