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Current system

23069-4331
JC 20 AC

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Binocular doubles
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Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

23069-4331 JC 20 AC

23^h 06^m 52.77^s -43° 31' 13.2" P.A. 292.00 sep 158.9 mag 4.45,7.77 Sp G2V dist. 40.44 pc (131.92 l.y.)

Coord 2000	23069-4331		Discov num	JC 20		Comp	AC		Coord arcsec 2000	23 06 52.77 -43 31 13.2
Date first	1851		Date last	2002		Obs	18
Pa first	293		Pa last	291.5		P.A. Now (θ)	291.5°
Sep first	160.2		Sep last	158.9		Sep. Now (ρ)	158.9"
Mag pri	4.45		Mag sec	7.77		delta mag (ΔM)	3.32		Spectral class	G2V (yellow)
Pri motion ra	-048		Sec motion ra	-050
Pri motion dec	-014		Sec motion dec	-021
Notes	N V (See Notes, Proper motion indicates physical)

rPM=0.134 (< 0.3, Physical double)

This double is physical.

23069-4331 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show	The Gru	231444	23 06 53 -43 31 13	JC 20 AB	2013	64	115	1.5	4.45	6.60	2.15
Show		231444	23 06 53 -43 31 13	JC 20 AC	2002	18	292	158.9	4.45	7.77	3.32		<===
Show		231443	23 06 39 -43 30 13	JC 20 CD	2011	4	355	100.6	7.77	11.23	3.46

Quadruple system
4 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Constellation	Grus		SAO	231444		HIP	114131		Tycho2	8012-01248-1
Gaia DR2	6541802406664428672		HD	218227		HR	8787		GC	32184
CD	CD-4415149		CP	CP-4410297		Bayer	Theta Gruis		Bayer name	The Gru
Distance	40.44		Distance ly	131.92		Bayer greek	θ Gru