09181-2223 B  1989AB

Coord 2000	09181-2223		Discov num	B  1989		Comp	AB		Coord arcsec 2000	09 18 05.03 -22 23 13.8
Date first	1932		Date last	2015		Obs	6
Pa first	173		Pa last	351		P.A. Now (θ)	351°
Sep first	0.9		Sep last	1.0		Sep. Now (ρ)	1"
Mag pri	10.60		Mag sec	10.70		delta mag (ΔM)	0.1		Spectral class
Pri motion ra	-031		Sec motion ra	-031
Pri motion dec	-001		Sec motion dec	-001
Notes

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			09181-2223	B 1989	AB	1932	2015	6	351	1.0	10.60	10.70	0.10		<===
Show			09181-2223	B 1989	AB,C	1920	2015	7	59	16.0	9.30	12.60	3.30

Triple system
4 visible stars in this system

Precise pa	350.7		Precise sep	0.993		Constellation	Hydra		Tycho2	6040-00302-1
Gaia DR2	54719887488

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
09181-2223	B 1989	AB	1991	5	355	1.0	10.60	10.70			091805.03-222313.8
09181-2223	B 1989	AB	2015	6	351	1.0	10.60	10.70			091805.03-222313.8

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