20205-2912 HJ 5188AC

Coord 2000	20205-2912		Discov num	HJ 5188		Comp	AC		Coord arcsec 2000	20 20 27.88 -29 11 50.0
Date first	1834		Date last	2018		Obs	47
Pa first	323		Pa last	321		P.A. Now (θ)	321°
Sep first	25.0		Sep last	27.3		Sep. Now (ρ)	27.3"
Mag pri	6.66		Mag sec	7.55		delta mag (ΔM)	0.89		Spectral class	A4/7V (white)
Pri motion ra	-004		Sec motion ra	-004
Pri motion dec	-001		Sec motion dec	-001
Notes	N (See Notes)

Visually invisible, K-band or other infrared star 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		189164	20205-2912	HJ 5188	AB	1834	2015	46	38	3.7	6.66	10.13	3.47
Show		189164	20205-2912	HJ 5188	AC	1834	2018	47	321	27.3	6.66	7.55	0.89		<===
Show		189164	20205-2912	HJ 5188	AD	1913	2015	6	38	120.6	6.66	10.05	3.39
Show		189164	20205-2912	WIE 1	BF	1951	1999	5	263	437.0	10.13	9.85	0.28
Show		189163	20205-2912	HJ 5188	DE	1876	2015	27	186	4.7	10.05	9.98	0.07

Sextuple system
6 visible stars in this system

Precise pa	320.8		Precise sep	27.266		Constellation	Sagittarius		SAO	189164
HIP	100288		Tycho2	6918-01823-1		Gaia DR2	22396076928		HD	193281
HR	7764		CD	CD-2916981		Distance	136.05		Distance ly	443.8

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20205-2912	HJ 5188	AC	2006	42	321	27.3	6.66	7.55		N D	202027.88-291150.0
20205-2912	HJ 5188	AC	2010	43	320	27.2	6.66	7.55		N D	202027.88-291150.0
20205-2912	HJ 5188	AC	2015	45	321	27.2	6.66	7.55	A4/7V	N	202027.88-291150.0
20205-2912	HJ 5188	AC	2018	47	321	27.3	6.66	7.55	A4/7V	N	202027.88-291150.0

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