14 Comae Berenices

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14 Comae Berenices
Coma Berenices constellation map.svg
Red circle.svg
Location of 14 Com (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Coma Berenices
Right ascension 12h 26m 24.06444s[1]
Declination +27° 16′ 05.6554″[1]
Apparent magnitude (V) 4.95[2]
Characteristics
Spectral type F1IV[3]
U−B color index +0.18[2]
B−V color index +0.27[2]
Astrometry
Radial velocity (Rv) −2.20[4] km/s
Proper motion (μ) RA: −14.20[1] mas/yr
Dec.: −10.32[1] mas/yr
Parallax (π) 11.82 ± 0.24[1] mas
Distance 276 ± 6 ly
(85 ± 2 pc)
Absolute magnitude (MV) +0.35[5]
Details[6]
Mass 2.4[5] M
Radius 23 R
Surface gravity (log g) 3.4[6] cgs
Temperature 7,300 K
Rotational velocity (v sin i) 226[5] km/s
Age 500 Myr
Other designations
14 Com, HR 4733, BD+28°2115, HD 108283, SAO 82310, FK5 2997, HIP 60697, AAVSO 1221+27
Database references
SIMBAD data

14 Comae Berenices (14 Com) is a star in the constellation Coma Berenices. Its apparent magnitude is 4.92. It is a shell star and a spectroscopic binary.

References[edit]

  1. ^ a b c d e Van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653. arXiv:0708.1752Freely accessible. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. 
  2. ^ a b c Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". CDS/ADC Collection of Electronic Catalogues. 2237. Bibcode:2002yCat.2237....0D. 
  3. ^ Gray, R. O.; Napier, M. G.; Winkler, L. I. (2001). "The Physical Basis of Luminosity Classification in the Late A-, F-, and Early G-Type Stars. I. Precise Spectral Types for 372 Stars". The Astronomical Journal. 121 (4): 2148. Bibcode:2001AJ....121.2148G. doi:10.1086/319956. 
  4. ^ Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759. arXiv:1606.08053Freely accessible. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. 
  5. ^ a b c Pizzolato, N.; Maggio, A.; Sciortino, S. (2000). "Evolution of X-ray activity of 1-3 Msun late-type stars in early post-main-sequence phases". Astronomy and Astrophysics. 361: 614. Bibcode:2000A&A...361..614P. 
  6. ^ a b Dominy, J. F.; Smith, M. A. (1977). "A spectroscopic study of 14 Comae and other A-type shell stars". Astrophysical Journal. 217: 494. Bibcode:1977ApJ...217..494D. doi:10.1086/155598.