20345+4132 CAN  73AB

Coord 2000	20345+4132		Discov num	CAN  73		Comp	AB		Coord arcsec 2000	20 34 29.60 +41 31 45.6
Date first	2008		Date last	2008		Obs	2
Pa first	180		Pa last	180		P.A. Now (θ)	180°
Sep first	2.3		Sep last	2.3		Sep. Now (ρ)	2.3"
Mag pri	6.70		Mag sec	11.60		delta mag (ΔM)	4.9		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 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 visible stars in this system

Precise pa

180.4

Precise sep

2.31

Constellation

Cygnus

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20345+4132	CAN 73	AB	2008	2	180	2.3	6.70	11.60	O7V	V K	203429.60+413145.6

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