12463-6806 R 207 AB (Bet Mus)
12h 46m 16.87s -68° 06' 29.1" P.A. 58.00 sep 1.0 mag 3.52,3.98 Sp B2.5V dist. 104.71 pc (341.56 l.y.)
Coord 2000 |
12463-6806 |
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Discov num |
R 207 |
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Comp |
AB |
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Coord arcsec 2000 |
12 46 16.87 -68 06 29.1 |
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Date first |
1880 |
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Date last |
2019 |
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Obs |
89 |
|
Pa first |
317 |
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Pa last |
57.9 |
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P.A. Now (θ) |
59.8° |
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Sep first |
0.5 |
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Sep last |
0.956 |
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Sep. Now (ρ) |
0.943" |
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Mag pri |
3.52 |
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Mag sec |
3.98 |
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delta mag (ΔM) |
0.46 |
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Spectral class |
B2.5V (blue-white) |
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Pri motion ra |
-040 |
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Sec motion ra |
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Pri motion dec |
-010 |
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Sec motion dec |
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Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
12463-6806 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
|
252019 |
12 46 17 -68 06 29 |
RIZ 5 Aa,Ab |
2010 |
1 |
121 |
0.0 |
3.10 |
6.60 |
3.50 |
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Show |
Bet Mus |
252019 |
12 46 17 -68 06 29 |
R 207 AB |
2019 |
89 |
58 |
1.0 |
3.52 |
3.98 |
0.46 |
Y |
<=== |
Show |
|
252019 |
12 46 17 -68 06 29 |
RIZ 5 AC |
2015 |
5 |
36 |
95.1 |
3.07 |
15.90 |
12.83 |
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Quadruple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Name |
Bet Mus |
|
Constellation |
Musca |
|
SAO |
252019 |
|
HIP |
62322 |
|
Tycho2 |
9228-03047-1 |
|
Gaia DR2 |
5855802671032914944 |
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HD |
110879 |
|
HR |
4844 |
|
GC |
17348 |
|
CP |
CP-67 2064 |
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Bayer |
Beta Muscae |
|
Bayer name |
Bet Mus |
|
Distance |
104.71 |
|
Distance ly |
341.56 |
|
Bayer greek |
β Mus |
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ORBITAL ELEMENTS
Period (P) | 188y | ± 16.5 |
Periastron (T) | 1874.2y | ± 6.5 |
Semi-major axis (a) | 1.16a | ± 0.23 |
Eccentricity (e) | 0.79 | ± 0.13 |
Inclination (i) | 53.3° | ± 9.9 |
Longitude of periastron (ω) | 72.5° | ± 1.3 |
Node (Ω) | 138.6° | ± 12.1 |
Notes | n | |
Reference | Tok2020e | |
Equinox | | |
Last observation | | |
Grade | 3 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
40.0 |
1.150 |
2001 |
40.7 |
1.143 |
2002 |
41.4 |
1.135 |
2003 |
42.1 |
1.127 |
2004 |
42.9 |
1.118 |
2005 |
43.7 |
1.110 |
2006 |
44.4 |
1.102 |
2007 |
45.2 |
1.093 |
2008 |
46.0 |
1.085 |
2009 |
46.8 |
1.076 |
2010 |
47.6 |
1.067 |
2011 |
48.5 |
1.058 |
2012 |
49.3 |
1.049 |
2013 |
50.2 |
1.040 |
2014 |
51.1 |
1.031 |
2015 |
52.0 |
1.022 |
2016 |
52.9 |
1.012 |
2017 |
53.8 |
1.003 |
2018 |
54.8 |
0.993 |
2019 |
55.7 |
0.983 |
2020 |
56.7 |
0.973 |
2021 |
57.7 |
0.963 |
2022 |
58.7 |
0.953 |
2023 |
59.8 |
0.943 |
2024 |
60.9 |
0.933 |
2025 |
62.0 |
0.923 |
2026 |
63.1 |
0.912 |
2027 |
64.2 |
0.901 |
2028 |
65.4 |
0.891 |
2029 |
66.6 |
0.880 |
2030 |
67.9 |
0.869 |
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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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