20078+3520 BKO  94BC

Coord 2000	20078+3520		Discov num	BKO  94		Comp	BC		Coord arcsec 2000	20 07 48.61 +35 20 30.5
Date first	1998		Date last	2015		Obs	8
Pa first	46		Pa last	46		P.A. Now (θ)	46°
Sep first	13.5		Sep last	13.5		Sep. Now (ρ)	13.5"
Mag pri	12.30		Mag sec	15.50		delta mag (ΔM)	3.2		Spectral class
Pri motion ra	-004		Sec motion ra
Pri motion dec	-006		Sec motion dec
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 07 47 +35 20 30	SEI 901 AB	2015	11	86	15.6	12.10	12.30	0.20
Show			20 07 49 +35 20 30	BKO 94 BC	2015	8	46	13.5	12.30	15.50	3.20		<===

Triple system
3 visible stars in this system

Precise pa	45.8		Precise sep	13.465		Constellation	Cygnus		Tycho2	2679-01149-1
Gaia DR2	2059001446193774080

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20078+3520	BKO 94	BC	2002	1	46	13.5	12.30	15.50			200748.61+352030.5
20078+3520	BKO 94	BC	2010	4	44	14.3	12.30	15.50			200748.61+352030.5
20078+3520	BKO 94	BC	2015	4	46	13.4	12.30	15.50			200748.61+352030.5

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