Astronomy:HD 24160
 Location shown, annotated: g | |
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Eridanus |
| Right ascension | 03h 49m 27.24527s[1] |
| Declination | −36° 12′ 34.8771″[1] |
| Apparent magnitude (V) | 4.17[2] |
| Characteristics | |
| Spectral type | G7 III[3] |
| B−V color index | 0.927±0.045[2] |
| Astrometry | |
| Radial velocity (Rv) | +2.0±0.7[4] km/s |
| Proper motion (μ) | RA: −44.841[1] mas/yr Dec.: −50.421[1] mas/yr |
| Parallax (π) | 15.0389 ± 0.2211[1] mas |
| Distance | 217 ± 3 ly (66.5 ± 1.0 pc) |
| Absolute magnitude (MV) | 0.13[2] |
| Details | |
| Mass | 2.33[5] M☉ |
| Radius | 11[6] R☉ |
| Luminosity | 81.3[5] L☉ |
| Surface gravity (log g) | 2.85±0.08[7] cgs |
| Temperature | 4,948±45[5] K |
| Metallicity [Fe/H] | +0.08±0.02[7] dex |
| Age | 1.76[5] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 24160 is a single[9] star in the equatorial constellation of Eridanus. It has the Bayer designation g Eridani. It is visible to the naked eye with an apparent visual magnitude of 4.17.[2] The distance to HD 24160 can be estimated from its annual parallax shift of 15.0 mas,[1] yielding a separation of 217 light years. It is moving further from the Earth with a heliocentric radial velocity of +2 km/s.[4] This object is a coronal member of the Ursa Major Moving Group of stars that share a common motion through space.[10]
At the age of 1.76 billion years old, HD 24160 is an evolved G-type giant star with a stellar classification of G7 III,[3] having consumed the hydrogen at its core and tracked away from the main sequence. It has 2.33[5] times the mass of the Sun and has expanded to about 11[6] times the Sun's radius. The star is radiating 81.3[5] times the Sun's luminosity from its enlarged photosphere at an effective temperature of 4,948 K.[5]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 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.
- ↑ 2.0 2.1 2.2 2.3 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 Keenan, Philip C.; McNeil, Raymond C. (1989), "The Perkins catalog of revised MK types for the cooler stars", Astrophysical Journal Supplement Series 71: 245, doi:10.1086/191373, Bibcode: 1989ApJS...71..245K.
- ↑ 4.0 4.1 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, doi:10.1051/0004-6361/201219219, A61, Bibcode: 2012A&A...546A..61D.
- ↑ 5.0 5.1 5.2 5.3 5.4 5.5 5.6 Luck, R. Earle (2015), "Abundances in the Local Region. I. G and K Giants", Astronomical Journal 150 (3), doi:10.1088/0004-6256/150/3/88, Bibcode: 2015AJ....150...88L.
- ↑ 6.0 6.1 Pasinetti Fracassini, L. E. et al. (February 2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) - Third edition - Comments and statistics", Astronomy and Astrophysics 367 (2): 521–524, doi:10.1051/0004-6361:20000451, Bibcode: 2001A&A...367..521P.
- ↑ 7.0 7.1 Alves, S. et al. (April 2015), "Determination of the spectroscopic stellar parameters for 257 field giant stars", Monthly Notices of the Royal Astronomical Society 448 (3): 2749–2765, doi:10.1093/mnras/stv189, Bibcode: 2015MNRAS.448.2749A.
- ↑ "HD 24160". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+24160.
- ↑ Eggleton, P. P.; Tokovinin, A. A. (2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society 389 (2): 869, doi:10.1111/j.1365-2966.2008.13596.x, Bibcode: 2008MNRAS.389..869E.
- ↑ Chupina, N. V. et al. (June 2006), "Kinematic structure of the corona of the Ursa Major flow found using proper motions and radial velocities of single stars", Astronomy and Astrophysics 451 (3): 909–916, doi:10.1051/0004-6361:20054009, Bibcode: 2006A&A...451..909C.
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