19413+3043 BU  145AC

Coord 2000	19413+3043		Discov num	BU  145		Comp	AC		Coord arcsec 2000	19 41 15.48 +30 43 16.8
Date first	1878		Date last	2015		Obs	13
Pa first	33		Pa last	28		P.A. Now (θ)	28°
Sep first	8.5		Sep last	7.9		Sep. Now (ρ)	7.9"
Mag pri	7.40		Mag sec	13.50		delta mag (ΔM)	6.1		Spectral class	A3V (white)
Pri motion ra	-001		Sec motion ra
Pri motion dec	-001		Sec motion dec
Notes

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		68695	19413+3043	BU 145	AB	1873	2009	27	272	0.8	7.40	9.09	1.69
Show		68695	19413+3043	BU 145	AC	1878	2015	13	28	7.9	7.40	13.50	6.10		<===
Show		68695	19413+3043	BU 145	AD	1873	2015	14	156	26.7	7.40	11.87	4.47

Quadruple system
4 visible stars in this system

Precise pa	28		Precise sep	7.905		Constellation	Cygnus		SAO	68695
HIP	96858		Tycho2	2656-05255-1		Gaia DR2	42356004736		HD	186097
BD	BD+30 3692		Distance	757.58		Distance ly	2471.23

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
19413+3043	BU 145	AC	1998	12	29	7.3	7.40	13.50	A3V	D	194115.48+304316.8
19413+3043	BU 145	AC	2015	13	28	7.9	7.40	13.50	A3V		194115.48+304316.8

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