Astronomy:28 Camelopardalis
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Short description: Star in the constellation Camelopardalis
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Camelopardalis |
| Right ascension | 05h 46m 54.60612s[1] |
| Declination | +56° 55′ 26.1502″[1] |
| Apparent magnitude (V) | 6.79[2] |
| Characteristics | |
| Spectral type | ApCr[3] or A7 V[4] |
| B−V color index | 0.141±0.005[2] |
| Astrometry | |
| Radial velocity (Rv) | +19.7±2[5] km/s |
| Proper motion (μ) | RA: +9.278[1] mas/yr Dec.: -25.985[1] mas/yr |
| Parallax (π) | 4.6006 ± 0.1994[1] mas |
| Distance | 710 ± 30 ly (217 ± 9 pc) |
| Absolute magnitude (MV) | 0.13[2] |
| Details | |
| Mass | 2.0[6] M☉ |
| Radius | 4.7[6] R☉ |
| Luminosity | 74.04[2] L☉ |
| Surface gravity (log g) | 3.4[6] cgs |
| Temperature | 8,003[1] K |
| Rotational velocity (v sin i) | 32.3±3.8[6] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
28 Camelopardalis is a star in the northern circumpolar constellation of Camelopardalis, located around 710 light years away from the Sun.[1] It has an apparent visual magnitude of 6.79,[2] which is below the normal limit for visibility to the naked eye. This star is moving further from the Earth with a heliocentric radial velocity of +20 km/s.[5] It is a probable Ap star[3][8] with a stellar classification of A7 V[4] and an overabundance of chromium in the spectrum.[3]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 Brown, A. G. A. (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics 616: A1. doi:10.1051/0004-6361/201833051. Bibcode: 2018A&A...616A...1G. Gaia DR2 record for this source at VizieR.
- ↑ 2.0 2.1 2.2 2.3 2.4 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters 38 (5): 331. doi:10.1134/S1063773712050015. Bibcode: 2012AstL...38..331A.
- ↑ 3.0 3.1 3.2 Bidelman, William P. (1988). "Miscellaneous spectroscopic notes". Astronomical Society of the Pacific 100: 1084. doi:10.1086/132274. Bibcode: 1988PASP..100.1084B.
- ↑ 4.0 4.1 Cowley, Anne Pyne; Cowley, Charles R. (June 1965), "Slit Spectra of Some Peculiar and Metallic-Line A Stars", Publications of the Astronomical Society of the Pacific 77 (456): 184, doi:10.1086/128190, Bibcode: 1965PASP...77..184C
- ↑ 5.0 5.1 Wilson, Ralph Elmer (1953). "General catalogue of stellar radial velocities". Washington. Bibcode: 1953GCRV..C......0W.
- ↑ 6.0 6.1 6.2 6.3 Moiseeva, A. V. et al. (January 2019). "Fundamental Parameters of CP Stars Observed at the 6-m Telescope. I. Observations in 2009–2011". Astrophysical Bulletin 74 (1): 62–65. doi:10.1134/S1990341319010061. Bibcode: 2019AstBu..74...62M.
- ↑ "28 Cam". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=28+Cam.
- ↑ Renson, P.; Manfroid, J. (2009). "Catalogue of Ap, HgMn and Am stars". Astronomy and Astrophysics 498 (3): 961. doi:10.1051/0004-6361/200810788. Bibcode: 2009A&A...498..961R.
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