19584+2859 ES  495AB

Coord 2000	19584+2859		Discov num	ES  495		Comp	AB		Coord arcsec 2000	19 58 23.39 +28 59 17.5
Date first	1907		Date last	2015		Obs	11
Pa first	245		Pa last	245		P.A. Now (θ)	245°
Sep first	40.5		Sep last	41.5		Sep. Now (ρ)	41.5"
Mag pri	7.69		Mag sec	12.14		delta mag (ΔM)	4.45		Spectral class	B9V (blue-white)
Pri motion ra	+000		Sec motion ra	-007
Pri motion dec	-008		Sec motion dec	-012
Notes

rPM=0.58 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			19584+2859	ES 495	AB	1907	2015	11	245	41.5	7.69	12.14	4.45		<===
Show			19584+2859	ES 495	BC	1907	2015	11	319	5.1	11.10	11.80	0.70
Show			19584+2859	FYM 73	BD	2000	2015	8	122	17.9	11.10	15.00	3.90

Quadruple system
4 visible stars in this system

Precise pa	244.7		Precise sep	41.511		Constellation	Vulpecula		SAO	88003
HIP	98302		Tycho2	2153-02601-1		Gaia DR2	70534317184		HD	189316
BD	BD+28 3553		Distance	746.27		Distance ly	2434.33

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
19584+2859	ES 495	AB	2000	4	245	41.5	7.69	11.10	B9V	D	195823.39+285917.5
19584+2859	ES 495	AB	2002	5	251	43.2	7.69	11.10	B9V	D	195823.39+285917.5
19584+2859	ES 495	AB	2012	6	245	41.6	7.69	11.10	B9V	D	195823.39+285917.5
19584+2859	ES 495	AB	2015	7	245	41.5	7.69	12.14	B9V		195823.39+285917.5

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