M Centauri

Last updated
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]
PrimaryM Centauri A
CompanionM 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

  1. 1 2 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.
  2. 1 2 3 4 5 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
  3. ↑ 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.
  4. ↑ Houk, Nancy (1978). "Michigan catalogue of two-dimensional spectral types for the HD stars". Ann Arbor : Dept. Of Astronomy. Bibcode:1978mcts.book.....H.
  5. ↑ 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.
  6. ↑ 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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