Astronomy:M Centauri
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Short description: Star in the constellation Centaurus
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Centaurus[1] |
| Right ascension | 13h 46m 39.378s[2] |
| Declination | −51° 25′ 57.95″[2] |
| Apparent magnitude (V) | +4.63[3] |
| Characteristics | |
| Spectral type | G8/K0III[4] |
| Astrometry | |
| Radial velocity (Rv) | −15.97±2.25[5] km/s |
| Proper motion (μ) | RA: +10.00±0.42[2] mas/yr Dec.: −27.62±0.34[2] mas/yr |
| Parallax (π) | 12.42 ± 0.48[2] mas |
| Distance | 260 ± 10 ly (81 ± 3 pc) |
| Absolute magnitude (MV) | +0.11[1] |
| Orbit[6] | |
| Primary | M Centauri A |
| Companion | M Centauri B |
| Period (P) | 437 days |
| Semi-major axis (a) | 6.45 mas |
| Eccentricity (e) | 0.13 |
| Inclination (i) | 48.2° |
| Longitude of the node (Ω) | 280.3° |
| Periastron epoch (T) | 2424163.0 |
| Argument of periastron (ω) (secondary) | 58.6° |
| Other designations | |
| Database references | |
| SIMBAD | data |
M Centauri (M Cen) is a binary star in the constellation Centaurus. It is approximately 260 light years from Earth.
M Centauri is a yellow G-type giant with an apparent magnitude of +4.64. It is a spectroscopic binary with an orbital period of 437 days.
References
- ↑ 1.0 1.1 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters 38 (5): 331. doi:10.1134/S1063773712050015. Bibcode: 2012AstL...38..331A XHIP record for this object at VizieR.
- ↑ 2.0 2.1 2.2 2.3 2.4 van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics 474 (2): 653–664. doi:10.1051/0004-6361:20078357. Bibcode: 2007A&A...474..653V. Vizier catalog entry
- ↑ Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P. et al. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics 355. Bibcode: 2000A&A...355L..27H.
- ↑ Houk, Nancy (1978). "Michigan catalogue of two-dimensional spectral types for the HD stars". Ann Arbor: Dept. Of Astronomy. Bibcode: 1978mcts.book.....H.
- ↑ Vallenari, A. et al. (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. doi:10.1051/0004-6361/202243940 Gaia DR3 record for this source at VizieR.
- ↑ Jancart, S. (2005). "Astrometric orbits of SB9 stars". Astronomy and Astrophysics 442 (1): 365–380. doi:10.1051/0004-6361:20053003. Bibcode: 2005A&A...442..365J.
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