HD 14622 is a single[6][10] star in the northern constellation of Andromeda. It is dimly visible to the naked eye under good seeing conditions, having an apparent visual magnitude of 5.81.[2] Based upon an annual parallax shift of 20.9 mas,[1] it is located 156 light years away. The star is moving closer to the Earth with a heliocentric radial velocity of −35 km/s,[5] and is predicted to come within 96 light-years in around 812,000 years.[2]
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Andromeda |
| Right ascension | 02h 22m 50.30316s[1] |
| Declination | +41° 23′ 46.6540″[1] |
| Apparent magnitude (V) | 5.81[2] |
| Characteristics | |
| Spectral type | F0 III–IV[3] |
| B−V color index | 0.289±0.006[2] |
| Variable type | suspected[4] |
| Astrometry | |
| Radial velocity (Rv) | −34.5±2.9[5] km/s |
| Proper motion (μ) | RA: +74.938[1] mas/yr Dec.: −98.513[1] mas/yr |
| Parallax (π) | 20.8673 ± 0.1336 mas[1] |
| Distance | 156 ± 1 ly (47.9 ± 0.3 pc) |
| Absolute magnitude (MV) | 2.45[2] |
| Details | |
| Mass | 1.69[6] M☉ |
| Luminosity | 8.14[7] L☉ |
| Temperature | 7,000[7] K |
| Rotational velocity (v sin i) | 43±2[8] km/s |
| Age | 890[6] Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
The stellar classification of HD 14622 is F0 III–IV,[3] showing a mixed spectrum of an evolving subgiant and giant star; suggesting this is an intermediate-mass star that has used up its core hydrogen and is expanding. The star is suspected of being slightly variable, but this has not been conclusively proven.[4] It is around 890[6] million years old with 1.69[6] times the mass of the Sun. The star is radiating 8[7] times the Sun's luminosity from its photosphere at an effective temperature of approximately 7,000.[7]
References
edit- ^ a b c d e f 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 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 Cowley, Anne; Fraquelli, Dorothy (February 1974). "MK Spectral Types for Some Bright F Stars". Publications of the Astronomical Society of the Pacific. 86 (509): 70. Bibcode:1974PASP...86...70C. doi:10.1086/129562.
- ^ a b VSX (17 December 2005). "NSV 15454". AAVSO Website. American Association of Variable Star Observers. Retrieved 7 October 2014.
- ^ a b de Bruijne, J. H. J.; Eilers, A.-C. (October 2012), "Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project", Astronomy & Astrophysics, 546: 14, arXiv:1208.3048, Bibcode:2012A&A...546A..61D, doi:10.1051/0004-6361/201219219, S2CID 59451347, A61.
- ^ a b c d e De Rosa, R. J.; et al. (2014). "The VAST Survey - III. The multiplicity of A-type stars within 75 pc". Monthly Notices of the Royal Astronomical Society. 437 (2): 1216–1240. arXiv:1311.7141. Bibcode:2014MNRAS.437.1216D. doi:10.1093/mnras/stt1932.
- ^ a b c d McDonald, I.; et al. (2012). "Fundamental parameters and infrared excesses of Hipparcos stars". Monthly Notices of the Royal Astronomical Society. 427 (1): 343–357. arXiv:1208.2037. Bibcode:2012MNRAS.427..343M. doi:10.1111/j.1365-2966.2012.21873.x. S2CID 118665352.
- ^ Royer, F.; et al. (2002). "Rotational velocities of A-type stars in the northern hemisphere. II. Measurement of v sin i". Astronomy and Astrophysics. 393: 897–911. arXiv:astro-ph/0205255. Bibcode:2002A&A...393..897R. doi:10.1051/0004-6361:20020943.
- ^ "HD 14622". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved October 16, 2018.
- ^ 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:0806.2878. Bibcode:2008MNRAS.389..869E. doi:10.1111/j.1365-2966.2008.13596.x. S2CID 14878976.