20278+3447 COU2131AB

Coord 2000	20278+3447		Discov num	COU2131		Comp	AB		Coord arcsec 2000	20 27 50.99 +34 47 10.4
Date first	1982		Date last	2012		Obs	4
Pa first	288		Pa last	280		P.A. Now (θ)	280°
Sep first	0.9		Sep last	1.1		Sep. Now (ρ)	1.1"
Mag pri	10.23		Mag sec	10.26		delta mag (ΔM)	0.03		Spectral class
Pri motion ra	+014		Sec motion ra	+014
Pri motion dec	+010		Sec motion dec	+010
Notes

Nature of this double is uncertain.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			20 27 51 +34 47 10	GII 86 Aa,Ab	2014	1	113	0.4	10.20	14.00	3.80
Show			20 27 51 +34 47 10	COU 2131 AB	2012	4	280	1.1	10.23	10.26	0.03		<===

Triple system
2 visible stars in this system

Precise pa	280.3		Precise sep	1.058		Constellation	Cygnus		Tycho2	2693-01106-1
Gaia DR2	2056354337583560960

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20278+3447	COU2131	AB	2008	3	280	1.1	10.23	10.26			202750.99+344710.4

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