14396-6050 RHD   1AB (Rigel kent)

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	2017		Obs	461
Pa first	218		Pa last	324		P.A. Now (θ)	337.2°
Sep first	20.5		Sep last	4.2		Sep. Now (ρ)	4.92"
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.

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show	Rigel kent	252838	14396-6050	RHD 1	AB	1752	2017	461	337	4.9	-0.01	1.33	1.34	Y	<===
Show			14396-6050	LDS 494	AC	1920	2000	3	212	999.9	0.14	12.70	12.56
Show			14396-6050	SCZ 1	Ca,Cb	1996	1996	2	100	0.3	11.10	18.00	6.90

Quadruple system
3 visible stars in this system

Precise pa	324.3		Precise sep	4.243		Common name	Rigel kent		Meaning	foot of the centaur
Other names	RIGEL KENTAURUS, TOLIMAN		Constellation	Centaurus		SAO	252838		HIP	71683
Gaia DR2	48286736896		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	324.3		last precise sep	4.243

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 Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
		Measures: green=micrometric, blue=interferometric, purple=photographic

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

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