20318+4128 CAN 34 AD

Coord 2000	20318+4128		Discov num	CAN  34		Comp	AD		Coord arcsec 2000	20 31 49.66 +41 28 26.5
Date first	2008		Date last	2008		Obs	2
Pa first	63		Pa last	62.7		P.A. Now (θ)	62.7°
Sep first	3.5		Sep last	3.48		Sep. Now (ρ)	3.48"
Mag pri	8.60		Mag sec	15.40		delta mag (ΔM)	6.8		Spectral class	O9III (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 31 50 +41 28 26	CAN 34 AB	2008	2	276	2.9	8.60	15.50	6.90
Show			20 31 50 +41 28 26	CAN 34 AC	2008	2	328	3.0	8.60	14.50	5.90
Show			20 31 50 +41 28 26	CAN 34 AD	2008	2	63	3.5	8.60	15.40	6.80		<===
Show			20 31 50 +41 28 26	CAN 34 AE	2008	2	177	4.8	8.60	16.40	7.80
Show			20 31 50 +41 28 26	CAN 34 AF	2008	1	112	5.4	8.60	17.20	8.60
Show			20 31 50 +41 28 26	CAN 34 AG	2008	1	92	5.9	8.60	17.60	9.00
Show			20 31 50 +41 28 26	CAN 34 AH	2008	1	148	8.3	8.60	11.00	2.40
Show			20 31 50 +41 28 26	CAN 34 AI	2014	5	295	9.5	8.60	14.30	5.70
Show			20 31 50 +41 28 26	CAN 34 AJ	2008	1	341	9.5	8.60	17.40	8.80
Show			20 31 50 +41 28 26	CAN 34 AK	2008	1	7	9.6	8.60	17.10	8.50
Show			20 31 50 +41 28 26	CAN 34 AL	2008	1	105	9.6	8.60	15.80	7.20
Show			20 31 50 +41 28 26	CAN 34 AM	2014	6	282	12.0	8.60	13.80	5.20
Show			20 31 50 +41 28 26	CAN 34 AN	2008	1	7	12.3	8.60	16.00	7.40

14-fold system
14 estimated visually detectable stars in this system

Constellation

Cygnus