20077+0446 ARN  20AD

Coord 2000	20077+0446		Discov num	ARN  20		Comp	AD		Coord arcsec 2000	20 07 42.53 +04 46 28.6
Date first	1897		Date last	2015		Obs	13
Pa first	128		Pa last	127		P.A. Now (θ)	127°
Sep first	101.1		Sep last	99.4		Sep. Now (ρ)	99.4"
Mag pri	9.67		Mag sec	8.91		delta mag (ΔM)	0.76		Spectral class	A5 (white)
Pri motion ra	+000		Sec motion ra	-008
Pri motion dec	-024		Sec motion dec	-009
Notes	N (See Notes)

Visually invisible, K-band or other infrared star rPM=0.708 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			20077+0446	STF2627	AB	1827	2015	20	32	2.0	9.67	10.81	1.14
Show			20077+0446	STF2627	AC	1897	2015	16	261	82.2	9.67	7.70	1.97
Show			20077+0446	ARN 20	AD	1897	2015	13	127	99.4	9.67	8.91	0.76		<===

Quadruple system
4 visible stars in this system

Precise pa	126.7		Precise sep	99.384		Constellation	Aquila		Tycho2	0503-00932-1
Gaia DR2	73759080704		HD	191028

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20077+0446	ARN 20	AD	2002	9	128	98.8	9.67	8.91		D	200742.54+044628.7
20077+0446	ARN 20	AD	2012	12	127	99.7	9.67	8.91		N D	200742.54+044628.7
20077+0446	ARN 20	AD	2014	12	127	99.1	9.67	8.91	A5	N	200742.54+044628.7
20077+0446	ARN 20	AD	2015	13	127	99.4	9.67	8.91	A5	N	200742.53+044628.6

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