19434+4715 STTA190AB

Coord 2000	19434+4715		Discov num	STTA190		Comp	AB		Coord arcsec 2000	19 43 22.49 +47 14 41.0
Date first	1878		Date last	2015		Obs	9
Pa first	300		Pa last	298		P.A. Now (θ)	298°
Sep first	11.6		Sep last	10.8		Sep. Now (ρ)	10.8"
Mag pri	7.71		Mag sec	12.50		delta mag (ΔM)	4.79		Spectral class	B0V (blue-white)
Pri motion ra	-004		Sec motion ra	+014
Pri motion dec	-002		Sec motion dec	-003
Notes

rPM=1.259 This double is not physical.

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		48768	19434+4715	STTA190	AB	1878	2015	9	298	10.8	7.71	12.50	4.79		<===
Show		48768	19434+4715	STTA190	AC	1875	2015	23	316	67.3	7.71	9.73	2.02

Triple system
3 visible stars in this system

Precise pa	297.9		Precise sep	10.824		Constellation	Cygnus		SAO	48768
HIP	97045		Tycho2	3561-01293-1		Gaia DR2	27728194048		HD	186618
BD	BD+46 2765		Distance	1149.43		Distance ly	3749.44

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
19434+4715	STTA190	AB	1998	4	297	11.0	7.71	12.50	B0V	D	194322.49+471441.0
19434+4715	STTA190	AB	2003	5	298	11.1	7.71	12.50	B0V	D	194322.49+471441.0
19434+4715	STTA190	AB	2010	6	298	10.5	7.71	12.50	B0V		194322.49+471441.0
19434+4715	STTA190	AB	2015	9	298	10.8	7.71	12.50	B0V		194322.49+471441.0

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