20277+3605 ES 2193AD

Coord 2000	20277+3605		Discov num	ES 2193		Comp	AD		Coord arcsec 2000	20 27 42.85 +36 04 25.2
Date first	1896		Date last	2015		Obs	11
Pa first	32		Pa last	33		P.A. Now (θ)	33°
Sep first	12.8		Sep last	12.7		Sep. Now (ρ)	12.7"
Mag pri	10.24		Mag sec	11.90		delta mag (ΔM)	1.66		Spectral class
Pri motion ra	+001		Sec motion ra	-001
Pri motion dec	-012		Sec motion dec	-014
Notes	N (See Notes)

Visually invisible, K-band or other infrared star rPM=0.202 (< 0.3, Physical double) This double is physical.

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			20277+3605	ES 2193	AB	1925	2015	6	334	4.9	10.24	11.50	1.26
Show			20277+3605	ES 2193	AC	1925	2015	9	231	7.4	10.24	14.90	4.66
Show			20277+3605	ES 2193	AD	1896	2015	11	33	12.7	10.24	11.90	1.66		<===

Quadruple system
4 visible stars in this system

Precise pa	33		Precise sep	12.669		Constellation	Cygnus		Tycho2	2697-00848-1
Gaia DR2	02790441984

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20277+3605	ES 2193	AD	1998	5	33	12.6	10.24	11.90		D	202742.85+360425.2
20277+3605	ES 2193	AD	2002	6	33	12.7	10.24	11.90		D	202742.85+360425.2
20277+3605	ES 2193	AD	2015	7	33	12.7	10.24	11.90		N	202742.85+360425.2

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