20305+4113 CAN 27 AB

Coord 2000	20305+4113		Discov num	CAN  27		Comp	AB		Coord arcsec 2000	20 30 27.30 +41 13 25.3
Date first	2008		Date last	2008		Obs	1
Pa first	107		Pa last	106.7		P.A. Now (θ)	106.7°
Sep first	4.9		Sep last	4.88		Sep. Now (ρ)	4.88"
Mag pri	6.40		Mag sec	13.40		delta mag (ΔM)	7		Spectral class	O7 (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 30 27 +41 13 25	CAN 27 AB	2008	1	107	4.9	6.40	13.40	7.00		<===
Show			20 30 27 +41 13 25	CAN 27 AC	2014	3	287	8.1	6.40	12.90	6.50
Show			20 30 27 +41 13 25	CAN 27 AD	2008	1	108	9.8	6.40	13.70	7.30
Show			20 30 27 +41 13 25	CAN 27 AE	2008	1	14	10.6	6.40	14.70	8.30

Quintuple system
5 estimated visually detectable stars in this system

Constellation

Cygnus