M Centauri
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| 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] |
| U−B color index | +0.72[citation needed] |
| B−V color index | +0.96[citation needed] |
| 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 mas[2] |
| 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 | |
| HR 5172, HD 119834, CD−50°8017, HIP 67234, SAO 241157, GC 18607, CCDM J13467-5126 | |
| 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
[edit]- ^ a b Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. XHIP record for this object at VizieR.
- ^ a b c d e van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. S2CID 18759600. Vizier catalog entry
- ^ Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (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. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
- ^ Jancart, S. (2005). "Astrometric orbits of SB9 stars". Astronomy and Astrophysics. 442 (1): 365–380. arXiv:astro-ph/0507695. Bibcode:2005A&A...442..365J. doi:10.1051/0004-6361:20053003. S2CID 15123997.
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