12415-4858 HJ 4539 AB (Muhlifain)
12h 41m 31.01s -48° 57' 34.6" P.A. 24.00 sep 0.5 mag 2.82,2.88 Sp A1IV dist. 39.9 pc (130.15 l.y.)
| Coord 2000 |
12415-4858 |
|
Discov num |
HJ 4539 |
|
Comp |
AB |
|
Coord arcsec 2000 |
12 41 31.01 -48 57 34.6 |
|
| Date first |
1835 |
|
Date last |
2021 |
|
Obs |
189 |
|
| Pa first |
341 |
|
Pa last |
23.8 |
|
P.A. Now (θ) |
19° |
|
| Sep first |
0.8 |
|
Sep last |
0.491 |
|
Sep. Now (ρ) |
0.63" |
|
| Mag pri |
2.82 |
|
Mag sec |
2.88 |
|
delta mag (ΔM) |
0.06 |
|
Spectral class |
A1IV (white) |
|
| Pri motion ra |
-193 |
|
Sec motion ra |
-194 |
|
| Pri motion dec |
-031 |
|
Sec motion dec |
-012 |
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
rPM=0.097 (< 0.3, Physical double)
This double is physical.
12415-4858 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
Muhlifain |
223603 |
12 41 31 -48 57 35 |
HJ 4539 AB |
2021 |
189 |
24 |
0.5 |
2.82 |
2.88 |
0.06 |
Y |
<=== |
| Show |
|
223603 |
12 41 31 -48 57 35 |
SEE 159 AB,C |
2010 |
6 |
113 |
59.0 |
2.82 |
14.40 |
11.58 |
|
|
| Show |
|
223603 |
12 41 31 -48 57 35 |
SHY 239 AD |
1999 |
3 |
304 |
999.9 |
2.82 |
3.85 |
1.03 |
|
|
Quadruple system
5 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Common name |
Muhlifain |
|
Constellation |
Centaurus |
|
SAO |
223603 |
|
HIP |
61932 |
|
| Tycho2 |
8240-02724-1 |
|
HD |
110304 |
|
HR |
4819 |
|
GC |
17262 |
|
| CD |
CD-48 7597 |
|
CP |
CP-48 4965 |
|
Bayer |
Gamma Centauri |
|
Bayer name |
Gam Cen |
|
| Distance |
39.9 |
|
Distance ly |
130.15 |
|
Bayer greek |
γ Cen |
|
| Meaning |
star on which to swear |
|
ORBITAL ELEMENTS
| Period (P) | 83.57y | ± 0.21 |
Periastron (T) | 1931.25y | ± 0.07 |
Semi-major axis (a) | 0.869a | ± 0.011 |
| Eccentricity (e) | 0.793 | ± 0.003 |
Inclination (i) | 113.7° | ± 0.7 |
Longitude of periastron (ω) | 187.9° | ± 1.5 |
| Node (Ω) | 2.6° | ± 0.7 |
Notes | n | |
Reference | Ary2015b | |
| Equinox | 2000 | |
Last observation | 2013 | |
Grade | 2 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
346.3 |
0.904 |
| 2001 |
345.3 |
0.854 |
| 2002 |
344.1 |
0.801 |
| 2003 |
342.8 |
0.746 |
| 2004 |
341.2 |
0.687 |
| 2005 |
339.4 |
0.626 |
| 2006 |
337.1 |
0.562 |
| 2007 |
334.3 |
0.494 |
| 2008 |
330.4 |
0.423 |
| 2009 |
325.1 |
0.350 |
| 2010 |
316.8 |
0.275 |
| 2011 |
302.4 |
0.203 |
| 2012 |
275.1 |
0.148 |
| 2013 |
233.6 |
0.139 |
| 2014 |
199.8 |
0.172 |
| 2015 |
174.8 |
0.173 |
| 2016 |
137.3 |
0.122 |
| 2017 |
78.4 |
0.129 |
| 2018 |
47.9 |
0.209 |
| 2019 |
35.3 |
0.302 |
| 2020 |
28.5 |
0.392 |
| 2021 |
24.3 |
0.477 |
| 2022 |
21.3 |
0.556 |
| 2023 |
19.0 |
0.630 |
| 2024 |
17.2 |
0.699 |
| 2025 |
15.7 |
0.764 |
| 2026 |
14.4 |
0.825 |
| 2027 |
13.3 |
0.883 |
| 2028 |
12.4 |
0.937 |
| 2029 |
11.5 |
0.987 |
| 2030 |
10.7 |
1.035 |
|
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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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