19428+0823 STF2562AD

Coord 2000	19428+0823		Discov num	STF2562		Comp	AD		Coord arcsec 2000	19 42 45.86 +08 22 57.5
Date first	1890		Date last	2015		Obs	26
Pa first	225		Pa last	222		P.A. Now (θ)	222°
Sep first	109.1		Sep last	117.2		Sep. Now (ρ)	117.2"
Mag pri	6.95		Mag sec	9.89		delta mag (ΔM)	2.94		Spectral class	F8V (yellow-white)
Pri motion ra	+025		Sec motion ra	+015
Pri motion dec	+054		Sec motion dec	-028
Notes	N (See Notes)

Visually invisible, K-band or other infrared star rPM=1.388 This double is not physical.

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			19428+0823	STF2562	AB	1822	2019	80	251	27.2	6.95	8.69	1.74
Show			19428+0823	STF2562	AC	1908	2015	11	289	82.0	6.95	12.12	5.17
Show			19428+0823	STF2562	AD	1890	2015	26	222	117.2	6.95	9.89	2.94		<===
Show			19428+0823	STF2562	BC	1908	2015	14	305	62.7	8.69	12.12	3.43
Show			19428+0823	STF2562	BD	1890	2015	25	214	94.6	8.69	9.89	1.20

Quadruple system
4 visible stars in this system

Precise pa	222.2		Precise sep	117.235		Constellation	Aquila		HIP	96979
Tycho2	1057-02439-1		Gaia DR2	57576782464		HD	186226		BD	BD+08 4190
Distance	66.45		Distance ly	216.76

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
19428+0823	STF2562	AD	2002	13	222	116.7	6.95	9.89	F8V	D	194245.86+082257.5
19428+0823	STF2562	AD	2009	14	222	117.0	6.95	9.89	F8V	D	194245.86+082257.5
19428+0823	STF2562	AD	2011	17	222	116.7	6.95	9.89	F8V	N D	194245.86+082257.5
19428+0823	STF2562	AD	2012	20	221	116.7	6.95	9.89	F8V	N D	194245.86+082257.5
19428+0823	STF2562	AD	2013	24	223	115.8	6.95	9.89	F8V	N	194245.86+082257.5
19428+0823	STF2562	AD	2015	25	222	117.2	6.95	9.89	F8V	N	194245.86+082257.5

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