19448+2916 ISM   4Aa,Ab

Coord 2000	19448+2916		Discov num	ISM   4		Comp	Aa,Ab		Coord arcsec 2000	19 44 48.74 +29 15 52.9
Date first	1949		Date last	1988		Obs	4
Pa first	119		Pa last	167		P.A. Now (θ)	167°
Sep first	0.1		Sep last	0.0		Sep. Now (ρ)	0"
Mag pri	7.00		Mag sec	8.00		delta mag (ΔM)	1		Spectral class	F2Iab+B8V (yellow-white/blue-white)
Pri motion ra	+000		Sec motion ra
Pri motion dec	-003		Sec motion dec
Notes	N (See Notes)

Visually invisible, K-band or other infrared star Nature of this double is uncertain.

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		87659	19448+2916	ISM 4	Aa,Ab	1949	1988	4	167	0.0	7.00	8.00	1.00		<===
Show	SU Cyg	87659	19448+2916	WRH 23	AE	1895	2015	10	289	24.8	7.03	10.54	3.51
Show		87659	19448+2916	WRH 23	AF	1895	2015	9	18	71.1	7.03	10.88	3.85
Show		87659	19448+2916	WRH 23	AG	1895	2015	9	88	75.9	7.03	10.21	3.18
Show		87659	19448+2916	EVS 42	AH	2011	2015	2	87	25.4	6.90	16.90	10.00
Show		87659	19448+2916	KRV 40	AI	2015	2015	1	34	42.4	6.90	19.20	12.30

Septuple system
6 visible stars in this system

Precise pa	166.7		Precise sep	0.041		Var name	SU Cyg		Constellation	Cygnus
SAO	87659		HIP	97150		Tycho2	2151-05896-1		Gaia DR2	02613700480
HD	186688		HR	7518		BD	BD+28 3460		Distance	787.4
Distance ly	2568.5

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
19448+2916	ISM 4	Aa,Ab	1988	4	167	0.0	7.00	8.00	F2Iab	N	194448.74+291552.9

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