Astronomy:14 Canis Minoris
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Canis Minor |
| Right ascension | 07h 58m 20.6565s[1] |
| Declination | +02° 13′ 29.156″[2] |
| Apparent magnitude (V) | +5.30[3] |
| Characteristics | |
| Spectral type | G8 IIIb[4] |
| B−V color index | 0.933±0.005[3] |
| Astrometry | |
| Radial velocity (Rv) | +42.61±0.20[5] km/s |
| Proper motion (μ) | RA: −156.144[1] mas/yr Dec.: +98.798[1] mas/yr |
| Parallax (π) | 13.50 ± 0.34[2] mas |
| Distance | 242 ± 6 ly (74 ± 2 pc) |
| Absolute magnitude (MV) | 0.95[3] |
| Details[5] | |
| Mass | 2.54±0.11 M☉ |
| Radius | 8.66±0.70 R☉ |
| Luminosity | 48+12 −10 L☉ |
| Surface gravity (log g) | 3.10±0.06 cgs |
| Temperature | 5,070±17 K |
| Metallicity [Fe/H] | 0.02±0.04 dex |
| Age | 550±60 Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
14 Canis Minoris, also known as HD 65345, is a single[7] star in the equatorial constellation of Canis Minor. It is faintly visible to the naked eye with an apparent visual magnitude of +5.30.[3] The distance to this star, as determined from an annual parallax shift of 13.50±0.34 mas,[2] is approximately 242 light years. 14 CMI has a relatively large proper motion, traversing the celestial sphere at the rate of 0.188 arcsecond/year.[8] It is moving further from the Sun with heliocentric radial velocity of +42.6 km/s.[5]
This is an evolved G-type giant star with a stellar classification of G8 IIIb.[4] At the age of around 550 million years old, it is a red clump giant, which means it has already undergone helium flash and is generating energy through helium fusion at its core.[9] The star has an estimated 2.5 times the mass of the Sun and has expanded to 8.7 times the Sun's radius. It is radiating roughly 48 times the Sun's luminosity from its enlarged photosphere at an effective temperature of 5,070 K.[5]
References
- ↑ 1.0 1.1 1.2 Gaia Collaboration; Brown, A. G. A.; Vallenari, A.; Prusti, T.; De Bruijne, J. H. J.; Mignard, F.; Drimmel, R.; Babusiaux, C. et al. (2016), "Gaia Data Release 1. Summary of the astrometric, photometric, and survey properties", Astronomy & Astrophysics 595: A2, doi:10.1051/0004-6361/201629512, Bibcode: 2016A&A...595A...2G.
- ↑ 2.0 2.1 2.2 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.
- ↑ 3.0 3.1 3.2 3.3 Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters 38 (5): 331, doi:10.1134/S1063773712050015, Bibcode: 2012AstL...38..331A.
- ↑ 4.0 4.1 Keenan, P.; McNeil, R. (October 1989), "The Perkins catalog of revised MK types for the cooler stars", Astrophysical Journal Supplement Series 71: 245–266, doi:10.1086/191373, Bibcode: 1989ApJS...71..245K.
- ↑ 5.0 5.1 5.2 5.3 Jofré, E. et al. (February 2015), "Stellar parameters and chemical abundances of 223 evolved stars with and without planets", Astronomy & Astrophysics 574: 46, doi:10.1051/0004-6361/201424474, A50, Bibcode: 2015A&A...574A..50J.
- ↑ "14 CMi". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=14+CMi.
- ↑ 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.
- ↑ Lépine, Sébastien; Shara, Michael M. (March 2005), "A Catalog of Northern Stars with Annual Proper Motions Larger than 0.15" (LSPM-NORTH Catalog)", The Astronomical Journal 129 (3): 1483–1522, doi:10.1086/427854, Bibcode: 2005AJ....129.1483L.
- ↑ Mishenina, T. V. et al. (September 2006), "Elemental abundances in the atmosphere of clump giants", Astronomy and Astrophysics 456 (3): 1109–1120, doi:10.1051/0004-6361:20065141, Bibcode: 2006A&A...456.1109M.
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