14396-6050 RHD 1 AB (Rigil Kentaurus)
14h 39m 36.50s -60° 50' 02.3" P.A. 344.00 sep 5.3 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 |
343.7 |
|
P.A. Now (θ) |
1.8° |
|
| Sep first |
20.5 |
|
Sep last |
5.279 |
|
Sep. Now (ρ) |
7.451" |
|
| 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 |
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|
| 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 |
Rigil Kentaurus |
252838 |
14 39 36 -60 50 02 |
RHD 1 AB |
2019 |
480 |
344 |
5.3 |
-0.01 |
1.33 |
1.34 |
Y |
<=== |
| Show |
|
252838 |
14 39 36 -60 50 02 |
LDS 494 AC |
2016 |
4 |
212 |
999.9 |
0.14 |
12.70 |
12.56 |
Y |
|
| Show |
|
|
14 29 43 -62 40 46 |
SCZ 1 Ca,Cb |
1996 |
2 |
100 |
0.3 |
11.10 |
18.00 |
6.90 |
|
|
Quadruple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Common name |
Rigil Kentaurus |
|
Constellation |
Centaurus |
|
SAO |
252838 |
|
HIP |
71683 |
|
| Tycho2 |
9007-05849-1 |
|
Gaia DR2 |
5877748648286736896 |
|
HD |
128620 |
|
HR |
5459 |
|
| GC |
19728 |
|
GL |
Gl 559A |
|
CP |
CP-60 5483 |
|
Bayer |
Alpha Centauri |
|
| Bayer name |
Alp Cen |
|
FK5 |
538 |
|
Distance |
1.32 |
|
Distance ly |
4.31 |
|
| Bayer greek |
α Cen |
|
| Other names |
Rigil Kent, Rigel Kentaurus, Toliman |
|
| Meaning |
foot of the centaur |
|
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 |
Notes | n | |
Reference | Pbx2016 | |
| Equinox | 2000 | |
Last observation | 2014 | |
Grade | 2 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
222.3 |
14.161 |
| 2001 |
223.4 |
13.472 |
| 2002 |
224.7 |
12.765 |
| 2003 |
226.2 |
12.041 |
| 2004 |
227.8 |
11.303 |
| 2005 |
229.7 |
10.554 |
| 2006 |
231.8 |
9.797 |
| 2007 |
234.3 |
9.036 |
| 2008 |
237.3 |
8.276 |
| 2009 |
240.8 |
7.525 |
| 2010 |
245.2 |
6.792 |
| 2011 |
250.5 |
6.092 |
| 2012 |
257.2 |
5.443 |
| 2013 |
265.6 |
4.874 |
| 2014 |
276.0 |
4.421 |
| 2015 |
288.2 |
4.129 |
| 2016 |
301.6 |
4.034 |
| 2017 |
315.0 |
4.151 |
| 2018 |
327.1 |
4.460 |
| 2019 |
337.2 |
4.920 |
| 2020 |
345.4 |
5.486 |
| 2021 |
352.1 |
6.116 |
| 2022 |
357.4 |
6.780 |
| 2023 |
1.8 |
7.451 |
| 2024 |
5.5 |
8.109 |
| 2025 |
8.6 |
8.731 |
| 2026 |
11.3 |
9.296 |
| 2027 |
13.8 |
9.781 |
| 2028 |
16.0 |
10.157 |
| 2029 |
18.1 |
10.392 |
| 2030 |
20.1 |
10.444 |
|
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Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
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Measures: green=micrometric, blue=interferometric, purple=photographic |
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