Astronomy:HD 116243
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| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Centaurus |
| Right ascension | 13h 24m 00.48075s[1] |
| Declination | −64° 32′ 08.4097″[1] |
| Apparent magnitude (V) | +4.52[2] |
| Characteristics | |
| Spectral type | G6IIb[3] |
| B−V color index | 0.822±0.030[2] |
| Astrometry | |
| Radial velocity (Rv) | +13.26±0.13[1] km/s |
| Proper motion (μ) | RA: 29.793[1] mas/yr Dec.: −21.465[1] mas/yr |
| Parallax (π) | 13.3749 ± 0.1716[1] mas |
| Distance | 244 ± 3 ly (74.8 ± 1.0 pc) |
| Absolute magnitude (MV) | 0.01[2] |
| Details | |
| Mass | 1.4[4] M☉ |
| Radius | 11.6+0.2 −2.6[1] R☉ |
| Luminosity | 88.8±1.3[1] L☉ |
| Surface gravity (log g) | 2.97[5] cgs |
| Temperature | 5,197+704 −51[1] K |
| Metallicity [Fe/H] | −0.13[5] dex |
| Rotational velocity (v sin i) | 4.3[6] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 116243 is a single[8] star in the southern constellation of Centaurus. It has the Bayer designation m Centauri, while HD 116243 is the identifier from the Henry Draper catalogue.[7] This star has a yellow hue and is faintly visible to the naked eye with an apparent visual magnitude of +4.52.[2] It is located at a distance of approximately 244 light years from the Sun based on parallax,[1] and it has an absolute magnitude of 0.01.[2] It is drifting further away with a radial velocity of +13.3 km/s.[1]
This object is an aging bright giant star with a stellar classification of G6IIb[3] With the supply of hydrogen at its core exhausted, it has expanded to 12 times the radius of the Sun. The star is radiating 89 times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 5,197 K.[1]
References
- ↑ 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 1.11 Brown, A. G. A. (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics 616: A1. doi:10.1051/0004-6361/201833051. Bibcode: 2018A&A...616A...1G. Gaia DR2 record for this source at VizieR.
- ↑ 2.0 2.1 2.2 2.3 2.4 Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters 38 (5): 331, doi:10.1134/S1063773712050015, Bibcode: 2012AstL...38..331A.
- ↑ 3.0 3.1 Keenan, Philip C.; McNeil, Raymond C. (1989), "The Perkins catalog of revised MK types for the cooler stars", Astrophysical Journal Supplement Series 71: 245, doi:10.1086/191373, Bibcode: 1989ApJS...71..245K.
- ↑ Anders, F.; Khalatyan, A.; Chiappini, C.; Queiroz, A. B.; Santiago, B. X.; Jordi, C.; Girardi, L.; Brown, A. G. A. et al. (2019), "Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia DR2 stars brighter than G = 18", Astronomy and Astrophysics 628: A94, doi:10.1051/0004-6361/201935765, Bibcode: 2019A&A...628A..94A.
- ↑ 5.0 5.1 Alves, S. et al. (April 2015), "Determination of the spectroscopic stellar parameters for 257 field giant stars", Monthly Notices of the Royal Astronomical Society 448 (3): 2749–2765, doi:10.1093/mnras/stv189, Bibcode: 2015MNRAS.448.2749A.
- ↑ Pasquini, L. et al. (2000), "Ca II activity and rotation in F-K evolved stars", Astronomy and Astrophysics 361: 1011–1022, Bibcode: 2000A&A...361.1011P.
- ↑ 7.0 7.1 "m Cen". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=m+Cen.
- ↑ Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society 389 (2): 869–879, doi:10.1111/j.1365-2966.2008.13596.x, Bibcode: 2008MNRAS.389..869E.
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