23576-6418 EHR 22 A,Bb

Coord 2000	23576-6418		Discov num	EHR  22		Comp	A,Bb		Coord arcsec 2000	23 57 34.97 -64 17 53.1
Date first	2005		Date last	2008		Obs	2
Pa first	108		Pa last	107.6		P.A. Now (θ)	107.6°
Sep first	12.4		Sep last	12.244		Sep. Now (ρ)	12.244"
Mag pri	4.80		Mag sec	15.60		delta mag (ΔM)	10.8		Spectral class	A1V (white)
Pri motion ra	+080		Sec motion ra
Pri motion dec	-036		Sec motion dec
Notes	N U K (See Notes, Proper motion indicates non-physical, K-band or other infrared magnitudes)

Visually invisible, K-band or other infrared star : Summary line gives K-band or other infrared (>1 micron) magnitudes This double is not physical.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show	Eta Tuc	255609	23 57 35 -64 17 53	EHR 22 A,Ba	2008	3	107	13.0	4.80	12.30	7.50
Show		255609	23 57 35 -64 17 53	EHR 22 A,Bb	2008	2	108	12.2	4.80	15.60	10.80		<===
Show			23 57 37 -64 17 58	EHR 22 Ba,Bb	2008	2	275	0.8	12.30	15.60	3.30

Triple system
1 estimated visually detectable stars in this system

Constellation	Tucana		SAO	255609		HIP	118121		Tycho2	9130-01766-1
Gaia DR2	6485789573494536832		HD	224392		HR	9062		GC	33223
CP	CP-64 4391		Bayer	Eta Tucanae		Bayer name	Eta Tuc		Distance	47.44
Distance ly	154.75		Bayer greek	η Tuc