19428+3741 STTA188AB

Coord 2000	19428+3741		Discov num	STTA188		Comp	AB		Coord arcsec 2000	19 42 48.56 +37 41 12.5
Date first	1875		Date last	2017		Obs	32
Pa first	122		Pa last	121		P.A. Now (θ)	121°
Sep first	58.8		Sep last	61.1		Sep. Now (ρ)	61.1"
Mag pri	7.71		Mag sec	7.98		delta mag (ΔM)	0.27		Spectral class	K2 (yellow-orange)
Pri motion ra	-011		Sec motion ra	-001
Pri motion dec	+007		Sec motion dec	+000
Notes	N (See Notes)

Visually invisible, K-band or other infrared star rPM=0.936 This double is not physical.

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		68737	19428+3741	STTA188	AB	1875	2017	32	121	61.1	7.71	7.98	0.27		<===
Show		68737	19428+3741	STU 11	AC	1896	2013	14	228	146.0	7.71	8.14	0.43
Show		68737	19428+3741	STU 11	AE	1896	2015	10	196	101.4	7.71	11.39	3.68
Show		68737	19428+3741	STU 11	AF	1896	2015	7	191	46.2	7.71	12.32	4.61
Show		68737	19428+3741	STTA188	AG	1998	2015	3	120	29.8	7.71	13.50	5.79
Show		68739	19428+3741	STU 11	BD	1896	2015	19	173	60.4	7.98	9.64	1.66
Show		68739	19428+3741	STTA188	BG	1998	2015	7	302	30.8	7.98	13.50	5.52

Septuple system
7 visible stars in this system

Precise pa	121		Precise sep	61.1		Constellation	Cygnus		SAO	68737
HIP	96986		Tycho2	3136-00664-1		Gaia DR2	02716764800		HD	186429
BD	BD+37 3577		Distance	709.22		Distance ly	2313.48

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
19428+3741	STTA188	AB	1999	24	120	60.4	7.71	7.98	K2	N D	194248.56+374112.5
19428+3741	STTA188	AB	2009	25	123	60.2	7.71	7.98	K2	N D	194248.56+374112.5
19428+3741	STTA188	AB	2013	27	121	60.5	7.71	7.98	K2	N	194248.56+374112.5
19428+3741	STTA188	AB	2015	30	121	60.7	7.71	7.98	K2	N	194248.56+374112.5
19428+3741	STTA188	AB	2017	32	121	61.1	7.71	7.98	K2	N	194248.56+374112.5

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