Astronomy:23 Camelopardalis
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Camelopardalis |
| Right ascension | 05h 44m 08.44597s[1] |
| Declination | +61° 28′ 35.5255″[1] |
| Apparent magnitude (V) | 6.168[2] |
| Characteristics | |
| Spectral type | G5 III:[2] |
| B−V color index | 0.881[2] |
| Astrometry | |
| Radial velocity (Rv) | −2.47±0.17[1] km/s |
| Proper motion (μ) | RA: −11.312[1] mas/yr Dec.: +0.766[1] mas/yr |
| Parallax (π) | 7.5250 ± 0.0371[1] mas |
| Distance | 433 ± 2 ly (132.9 ± 0.7 pc) |
| Absolute magnitude (MV) | 0.95[3] |
| Details | |
| Mass | 2.13[2] M☉ |
| Radius | 9.84[1] R☉ |
| Luminosity | 60.255[1] L☉ |
| Surface gravity (log g) | 3.15±0.18[4] cgs |
| Temperature | 5,183±51[4] K |
| Metallicity [Fe/H] | −0.01±0.05[4] dex |
| Age | 1.50[2] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
23 Camelopardalis is a star in the northern circumpolar constellation of Camelopardalis, located 433 light years away from the Sun.[1] It is just visible to the naked eye as a dim, yellow-hued star with an apparent visual magnitude of 6.17.[2] The object is moving closer to the Sun with a heliocentric radial velocity of −2.5 km/s.[1]
With a stellar classification of G5 III:,[2] 23 Camelopardalis appears to be an aging giant star that has exhausted the hydrogen at its core and evolved away from the main sequence, although the ':' denotes some uncertainty about the classification. It is a red clump giant,[6] which indicates it is on the horizontal branch and is generating energy through helium fusion at its core. The star is 1.5[2] billion years old with more than double[2] the mass of the Sun and almost 10[1] times the Sun's radius. It is radiating 60[1] times the Sun's luminosity from its enlarged photosphere at an effective temperature of 5,183 K.[4]
References
- ↑ 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 1.11 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 2.5 2.6 2.7 2.8 Luck, R. Earle (2015), "Abundances in the Local Region. I. G and K Giants", Astronomical Journal 150 (3): 88, doi:10.1088/0004-6256/150/3/88, Bibcode: 2015AJ....150...88L.
- ↑ Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters 38 (5): 331, doi:10.1134/S1063773712050015, Bibcode: 2012AstL...38..331A.
- ↑ 4.0 4.1 4.2 4.3 da Silva, R. et al. (February 2011), "Homogeneous photospheric parameters and C abundances in G and K nearby stars with and without planets", Astronomy and Astrophysics 526: 13, doi:10.1051/0004-6361/201015907, A71, Bibcode: 2011A&A...526A..71D.
- ↑ "23 Cam". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=23+Cam.
- ↑ Mishenina, T. V. et al. (September 2006), "Elemental abundances in the atmosphere of clump giants", Astronomy and Astrophysics 456 (3): 1109–1120, doi:10.1051/0004-6361:20065141, Bibcode: 2006A&A...456.1109M.
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