23576-6418 EHR 22 A,Ba (Eta Tuc)

Coord 2000	23576-6418		Discov num	EHR  22		Comp	A,Ba		Coord arcsec 2000	23 57 34.97 -64 17 53.1
Date first	1999		Date last	2008		Obs	3
Pa first	108		Pa last	106.9		P.A. Now (θ)	106.9°
Sep first	13.6		Sep last	13.041		Sep. Now (ρ)	13.041"
Mag pri	4.80		Mag sec	12.30		delta mag (ΔM)	7.5		Spectral class	A1V (white)
Pri motion ra	+079		Sec motion ra
Pri motion dec	-061		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

Name	Eta Tuc		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