20178+5717 KR   50CD

Coord 2000	20178+5717		Discov num	KR   50		Comp	CD		Coord arcsec 2000	20 17 54.08 +57 17 36.3
Date first	1909		Date last	2016		Obs	2
Pa first	102		Pa last	355		P.A. Now (θ)	355°
Sep first	3.4		Sep last	1.7		Sep. Now (ρ)	1.7"
Mag pri	11.54		Mag sec	12.50		delta mag (ΔM)	0.96		Spectral class
Pri motion ra	+020		Sec motion ra	+018
Pri motion dec	+016		Sec motion dec	+018
Notes	T (Parallax indicates physical)

rPM=0.11 (< 0.3, Physical double) This double is physical.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			20 17 46 +57 17 16	KR 50 AB	2016	16	129	2.1	8.55	9.99	1.44
Show			20 17 46 +57 17 16	KR 50 AC	2015	7	73	66.6	8.55	11.54	2.99
Show			20 17 54 +57 17 36	KR 50 CD	2016	2	355	1.7	11.54	12.50	0.96		<===

Quadruple system
4 visible stars in this system

Precise pa	354.9		Precise sep	1.655		Constellation	Cygnus		Tycho2	3945-00178-1
Gaia DR2	2187950181328033280

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20178+5717	KR 50	CD	1909	1	102	3.4	11.54	12.50			201754.08+571736.3

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