14 Camelopardalis

14 Camelopardalis is a star in the northern circumpolar constellation of Camelopardalis, located 272 light years away from the Sun as determined by parallax measurements. With an apparent visual magnitude of 6.49,[2] it is a challenge to view with the naked eye even in excellent viewing conditions. The heliocentric radial velocity value is poorly constrained, but it appears to be moving closer to the Earth at the rate of around −4 km/s.[2]

14 Camelopardalis
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Camelopardalis
Right ascension 05h 13m 31.24447s[1]
Declination +62° 41′ 28.0806″[1]
Apparent magnitude (V) 6.49[2]
Characteristics
Evolutionary stage main sequence[3]
Spectral type A7 Vn[4]
B−V color index 0.204±0.006[2]
Astrometry
Radial velocity (Rv)−4.0±4.3[2] km/s
Proper motion (μ) RA: −36.338[1] mas/yr
Dec.: +1.038[1] mas/yr
Parallax (π)11.9698 ± 0.0505[1] mas
Distance272 ± 1 ly
(83.5 ± 0.4 pc)
Absolute magnitude (MV)2.00[2]
Details
Mass1.61[5] M☉
Luminosity15.1+1.4
−1.3[3] L☉
Surface gravity (log g)3.96[5] cgs
Temperature7,872±268[5] K
Rotational velocity (v sin i)312[3] km/s
Age504[5] Myr
Other designations
14 Cam, BD+62°734, HD 33296, HIP 24348, HR 1678, SAO 13413[6]
Database references
SIMBADdata

This is a white-hued, A-type main-sequence star with a stellar classification of A7 Vn,[4] where the 'n' notation indicates "nebulous" lines due to rapid rotation. The star is 504 million years old with 1.61[5] times the mass of the Sun and is spinning with a projected rotational velocity of 312 km/s.[3] It is radiating 15[3] times the Sun's luminosity from its photosphere at an effective temperature of 7,872 K.[5]

References
  1. Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
  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, S2CID 119257644.
  3. Zorec, J.; Royer, F. (2012), "Rotational velocities of A-type stars. IV. Evolution of rotational velocities", Astronomy & Astrophysics, 537: A120, arXiv:1201.2052, Bibcode:2012A&A...537A.120Z, doi:10.1051/0004-6361/201117691, S2CID 55586789.
  4. Cowley, A.; et al. (April 1969), "A study of the bright A stars. I. A catalogue of spectral classifications", Astronomical Journal, 74: 375–406, Bibcode:1969AJ.....74..375C, doi:10.1086/110819
  5. David, Trevor J.; Hillenbrand, Lynne A. (2015), "The Ages of Early-Type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets", The Astrophysical Journal, 804 (2): 146, arXiv:1501.03154, Bibcode:2015ApJ...804..146D, doi:10.1088/0004-637X/804/2/146, S2CID 33401607.
  6. "14 Cam". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-04-15.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.