Summary
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]
| 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 mas[1] |
| Distance | 272 ± 1 ly (83.5 ± 0.4 pc) |
| Absolute magnitude (MV) | 2.00[2] |
| Details | |
| Mass | 1.61[5] M☉ |
| Luminosity | 15.1+1.4 −1.3[3] L☉ |
| Surface gravity (log g) | 3.96[5] cgs |
| Temperature | 7,872±268[5] K |
| Rotational velocity (v sin i) | 312[3] km/s |
| Age | 504[5] Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
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 edit
- ^ a b c d e 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.
- ^ a b c d e f 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.
- ^ a b c d e 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.
- ^ a b 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
- ^ a b c d e f 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.
- ^ "14 Cam". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-04-15.