20069-0855 HDO 156AB

Coord 2000	20069-0855		Discov num	HDO 156		Comp	AB		Coord arcsec 2000	20 06 55.85 -08 54 51.3
Date first	1892		Date last	2016		Obs	16
Pa first	81		Pa last	89		P.A. Now (θ)	89°
Sep first	6.1		Sep last	6.6		Sep. Now (ρ)	6.6"
Mag pri	7.89		Mag sec	10.30		delta mag (ΔM)	2.41		Spectral class	A9V (white)
Pri motion ra	+006		Sec motion ra	+008
Pri motion dec	-008		Sec motion dec	-012
Notes	N (See Notes)

Visually invisible, K-band or other infrared star rPM=0.31 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			20069-0855	HDO 156	AB	1892	2016	16	89	6.6	7.89	10.30	2.41		<===
Show			20069-0855	HDO 156	AC	1907	2016	8	54	8.3	7.89	12.80	4.91

Triple system
3 visible stars in this system

Precise pa	88.6		Precise sep	6.601		Constellation	Capricornus		HIP	99085
Tycho2	5739-01739-1		Gaia DR2	21098513664		HD	190774		BD	BD-09 5356
Distance	213.68		Distance ly	697.02

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20069-0855	HDO 156	AB	1999	9	88	6.6	7.89	10.30	A9V	N D	200655.85-085451.3
20069-0855	HDO 156	AB	2010	10	89	6.4	7.89	10.30	A9V	N D	200655.85-085451.3
20069-0855	HDO 156	AB	2015	12	89	6.6	7.89	10.30	A9V	N	200655.85-085451.3
20069-0855	HDO 156	AB	2016	16	89	6.6	7.89	10.30	A9V	N	200655.85-085451.3

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