14396-6050 RHD 1 AB (Rigil Kentaurus)
14h 39m 36.50s -60° 50' 02.3" P.A. 5.00 sep 8.1 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 |
2023 |
|
Obs |
481 |
|
| Pa first |
218 |
|
Pa last |
5.1 |
|
P.A. Now (θ) |
12.1° (calc) |
|
| Sep first |
20.5 |
|
Sep last |
8.086 |
|
Sep. Now (ρ) |
9.294" (calc) |
|
| Mag pri |
0.01 |
|
Mag sec |
1.33 |
|
delta mag (ΔM) |
1.32 |
|
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 |
Rigil Kentaurus |
252838 |
14 39 36 -60 50 02 |
RHD 1 AB |
2023 |
481 |
5 |
8.1 |
0.01 |
1.33 |
1.32 |
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 |
|
182739 |
14 29 43 -62 40 46 |
SCZ 1 Ca,Cb |
1996 |
2 |
100 |
0.3 |
11.10 |
18.00 |
6.90 |
|
|
Quadruple system
4 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 |
|
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) | 79.762y | ± 0.019 |
Periastron (T) | 1955.564y | ± 0.015 |
Semi-major axis (a) | 17.493a | ± 0.0096 |
| Eccentricity (e) | 0.51947 | ± 0.00015 |
Inclination (i) | 79.243° | ± 0.0089 |
Longitude of periastron (ω) | 231.519° | ± 0.027 |
| Node (Ω) | 205.073° | ± 0.025 |
Notes | n | |
Reference | Ake2021 | |
| Equinox | | |
Last observation | | |
Grade | 2 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
222.4 |
14.134 |
| 2001 |
223.6 |
13.445 |
| 2002 |
224.9 |
12.738 |
| 2003 |
226.3 |
12.013 |
| 2004 |
228.0 |
11.275 |
| 2005 |
229.8 |
10.524 |
| 2006 |
232.0 |
9.765 |
| 2007 |
234.5 |
9.002 |
| 2008 |
237.4 |
8.240 |
| 2009 |
241.0 |
7.486 |
| 2010 |
245.4 |
6.751 |
| 2011 |
250.8 |
6.047 |
| 2012 |
257.5 |
5.396 |
| 2013 |
266.0 |
4.825 |
| 2014 |
276.5 |
4.373 |
| 2015 |
288.9 |
4.084 |
| 2016 |
302.5 |
3.997 |
| 2017 |
316.0 |
4.124 |
| 2018 |
328.1 |
4.444 |
| 2019 |
338.3 |
4.915 |
| 2020 |
346.4 |
5.488 |
| 2021 |
353.0 |
6.125 |
| 2022 |
358.3 |
6.792 |
| 2023 |
2.6 |
7.465 |
| 2024 |
6.3 |
8.120 |
| 2025 |
9.4 |
8.737 |
| 2026 |
12.1 |
9.294 |
| 2027 |
14.5 |
9.765 |
| 2028 |
16.7 |
10.121 |
| 2029 |
18.8 |
10.329 |
| 2030 |
20.9 |
10.345 |
| 2031 |
23.0 |
10.122 |
| 2032 |
25.2 |
9.607 |
| 2033 |
27.8 |
8.750 |
| 2034 |
31.2 |
7.524 |
| 2035 |
36.0 |
5.948 |
| 2036 |
45.0 |
4.123 |
| 2037 |
68.3 |
2.336 |
| 2038 |
133.1 |
1.805 |
| 2039 |
172.9 |
3.305 |
| 2040 |
185.6 |
5.241 |
| 2041 |
191.5 |
7.150 |
| 2042 |
194.9 |
8.942 |
| 2043 |
197.3 |
10.592 |
| 2044 |
199.0 |
12.095 |
| 2045 |
200.3 |
13.457 |
| 2046 |
201.4 |
14.683 |
| 2047 |
202.4 |
15.782 |
| 2048 |
203.2 |
16.763 |
| 2049 |
204.0 |
17.634 |
| 2050 |
204.6 |
18.403 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
Measures: green=micrometric, blue=interferometric, purple=photographic
|
|
