14 Canis Minoris

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14 Canis Minoris
Observation data
Epoch J2000      Equinox J2000
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
Distance242 ± 6 ly
(74 ± 2 pc)
Absolute magnitude (MV)0.95[3]
Details[5]
Mass2.54±0.11 M
Radius8.66±0.70 R
Luminosity48+12
−10
 L
Surface gravity (log g)3.10±0.06 cgs
Temperature5,070±17 K
Metallicity [Fe/H]0.02±0.04 dex
Age550±60 Myr
Other designations
BD+02° 1833, GC 10776, HD 65345, HIP 38962, HR 3110, SAO 116182, CCDM 07584+0213, WDS J07583+0213A[6]
Database references
SIMBADdata

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[edit]

  1. ^ a b c 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, arXiv:1609.04172Freely accessible, Bibcode:2016A&A...595A...2G, doi:10.1051/0004-6361/201629512. 
  2. ^ a b c van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv:0708.1752Freely accessible, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357. 
  3. ^ a b c d Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters, 38 (5): 331, arXiv:1108.4971Freely accessible, Bibcode:2012AstL...38..331A, doi:10.1134/S1063773712050015. 
  4. ^ a b Keenan, P.; McNeil, R. (October 1989), "The Perkins catalog of revised MK types for the cooler stars", Astrophysical Journal Supplement Series, 71: 245–266, Bibcode:1989ApJS...71..245K, doi:10.1086/191373. 
  5. ^ a b c d Jofré, E.; et al. (February 2015), "Stellar parameters and chemical abundances of 223 evolved stars with and without planets", Astronomy & Astrophysics, 574: 46, arXiv:1410.6422Freely accessible, Bibcode:2015A&A...574A..50J, doi:10.1051/0004-6361/201424474, A50. 
  6. ^ "14 CMi". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2018-06-12. 
  7. ^ 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, arXiv:0806.2878Freely accessible, Bibcode:2008MNRAS.389..869E, doi:10.1111/j.1365-2966.2008.13596.x. 
  8. ^ 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, arXiv:astro-ph/0412070Freely accessible, Bibcode:2005AJ....129.1483L, doi:10.1086/427854. 
  9. ^ Mishenina, T. V.; et al. (September 2006), "Elemental abundances in the atmosphere of clump giants", Astronomy and Astrophysics, 456 (3): 1109–1120, arXiv:astro-ph/0605615Freely accessible, Bibcode:2006A&A...456.1109M, doi:10.1051/0004-6361:20065141.