19490+4423 A   718BC

Coord 2000	19490+4423		Discov num	A   718		Comp	BC		Coord arcsec 2000	19 49 00.90 +44 22 45.1
Date first	1904		Date last	2008		Obs	19
Pa first	52		Pa last	26		P.A. Now (θ)	26°
Sep first	0.3		Sep last	0.2		Sep. Now (ρ)	0.2"
Mag pri	8.20		Mag sec	8.70		delta mag (ΔM)	0.5		Spectral class	B8III (blue-white)
Pri motion ra	+006		Sec motion ra	+006
Pri motion dec	-001		Sec motion dec	-001
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		48866	19490+4423	STF2588	A,BC	1783	2019	43	159	9.6	7.74	8.12	0.38
Show		48866	19490+4423	A 718	BC	1904	2008	19	26	0.2	8.20	8.70	0.50		<===

Triple system
4 visible stars in this system

Precise pa	26.1		Precise sep	0.22		Constellation	Cygnus		SAO	48866
HIP	97498		Tycho2	3148-00155-1		Gaia DR2	71332155136		HD	187613
BD	BD+44 3261		Distance	854.7		Distance ly	2788.03

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
19490+4423	A 718	BC	1987	18	32	0.2	8.20	8.70			194900.90+442245.1
19490+4423	A 718	BC	2008	19	26	0.2	8.20	8.70		N	194900.90+442245.1

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