20347+4129 CAN 74 AD

Coord 2000	20347+4129		Discov num	CAN  74		Comp	AD		Coord arcsec 2000	20 34 43.58 +41 29 04.6
Date first	2008		Date last	2015		Obs	6
Pa first	198		Pa last	198		P.A. Now (θ)	198°
Sep first	6.6		Sep last	6.55		Sep. Now (ρ)	6.55"
Mag pri	7.70		Mag sec	11.90		delta mag (ΔM)	4.2		Spectral class	B2III (blue-white)
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 44 +41 29 05	CAN 74 AB	2008	1	29	4.8	7.70	15.60	7.90
Show			20 34 44 +41 29 05	CAN 74 AC	2008	2	297	6.4	7.70	15.20	7.50
Show			20 34 44 +41 29 05	CAN 74 AD	2015	6	198	6.6	7.70	11.90	4.20		<===
Show			20 34 44 +41 29 05	CAN 74 AE	2008	1	303	9.1	7.70	14.30	6.60
Show			20 34 44 +41 29 05	CAN 74 AF	2008	1	318	9.6	7.70	15.50	7.80
Show			20 34 44 +41 29 05	CAN 74 AG	2008	3	238	9.9	7.70	12.10	4.40

Septuple system
7 estimated visually detectable stars in this system

Constellation

Cygnus