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14396-6050
RHD 1AB
Rigel Kentaurus

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Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

14396-6050 RHD 1AB (Rigel Kentaurus)

14^h 39^m 36.50^s -60° 50' 02.3" P.A. 352.10 sep 6.1 mag -0.01,1.33 Sp G2V+K1V dist. 1.32 pc (4.31 l.y.)

Coord 2000	14396-6050		Discov num	RHD 1		Comp	AB		Coord arcsec 2000	14 39 36.50 -60 50 02.3
Date first	1752		Date last	2019		Obs	480
Pa first	218		Pa last	344		P.A. Now (θ)	352.1°
Sep first	20.5		Sep last	5.3		Sep. Now (ρ)	6.12"
Mag pri	-0.01		Mag sec	1.33		delta mag (ΔM)	1.34		Spectral class	G2V+K1V (yellow/yellow-orange)
Pri motion ra	-368		Sec motion ra
Pri motion dec	+047		Sec motion dec
Notes	N O P (See Notes, Orbital solution, 100-year proper motion)

This double is physical.

14396-6050 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show	Rigel Kentaurus	252838	14 39 36 -60 50 02	RHD 1 AB	2019	480	352	6.1	-0.01	1.33	1.34	Y	<===
Show		252838	14 39 36 -60 50 02	LDS 494 AC	2000	3	212	999.9	0.14	12.70	12.56
Show	Proxima Centauri		14 29 43 -62 40 46	SCZ 1 Ca,Cb	1996	2	100	0.3	11.10	18.00	6.90

Quadruple system
3 visible stars in this system

OTHER CATALOGS AND DESIGNATIONS

Precise pa	343.7		Precise sep	5.279		Common name	Rigel Kentaurus		Meaning	foot of the centaur
Other names	RIGEL KENT, RIGIL KENTAURUS, TOLIMAN		Constellation	Centaurus		SAO	252838		HIP	71683
Gaia DR2	5877748648286736896		HD	128620		HR	5459		GC	19728
GL	Gl 559A		Bayer	Alpha Centauri		Bayer name	Alp Cen		Distance	1.32
Distance ly	4.31		last precise pa	343.7		last precise sep	5.279

ORBITAL ELEMENTS

Period (P)	79.91y	± 0.013	Periastron (T)	1955.66y	± 0.014	Semi-major axis (a)	17.66a	± 0.026
Eccentricity (e)	0.524	± 0.0011	Inclination (i)	79.32°	± 0.044	Longitude of periastron (ω)	232.3°	± 0.11
Node (Ω)	204.75°	± 0.087	Note			Grade	2	(1=Definitive, 9=Indet.)
Equinox	2000		Last observation	2014

label	rho	theta
2000	14.161	222.3
2001	13.472	223.4
2002	12.765	224.7
2003	12.041	226.2
2004	11.303	227.8
2005	10.554	229.7
2006	9.797	231.8
2007	9.036	234.3
2008	8.276	237.3
2009	7.525	240.8
2010	6.792	245.2
2011	6.092	250.5
2012	5.443	257.2
2013	4.874	265.6
2014	4.421	276.0
2015	4.129	288.2
2016	4.034	301.6
2017	4.151	315.0
2018	4.460	327.1
2019	4.920	337.2
2020	5.486	345.4
2021	6.116	352.1
2022	6.780	357.4
2023	7.451	1.8
2024	8.109	5.5
2025	8.731	8.6
2026	9.296	11.3
2027	9.781	13.8
2028	10.157	16.0
2029	10.392	18.1
2030	10.444	20.1

grafico orbita

Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.

wds14396-6050c.png orbit plot

Measures: green=micrometric, blue=interferometric, purple=photographic

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
14396-6050	RHD 1	AB	2007	438	236	8.8	0.14	1.24	G2V K1V	NODP	143940.90-605006.5
14396-6050	RHD 1	AB	2008	442	240	7.8	0.14	1.24	G2V K1V	NODP	143940.90-605006.5
14396-6050	RHD 1	AB	2009	443	244	7.0	0.14	1.24	G2V K1V	NODP	143940.90-605006.5
14396-6050	RHD 1	AB	2012	444	255	5.0	0.14	1.24	G2V K1V	NODP	143940.90-605006.5
14396-6050	RHD 1	AB	2013	446	263	5.1	-0.01	1.33	G2V+K1V	NODP	143940.90-605006.5
14396-6050	RHD 1	AB	2014	447	279	4.3	-0.01	1.33	G2V+K1V	NODP	143940.90-605006.5
14396-6050	RHD 1	AB	2016	458	313	4.1	-0.01	1.33	G2V+K1V	NO P	143936.50-605002.3
14396-6050	RHD 1	AB	2017	461	324	4.2	-0.01	1.33	G2V+K1V	NO P	143936.50-605002.3

If you need more information about this double, apply for a data request form to the WDS.