Astronomy:Xi1 Capricorni
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| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Capricornus[1] |
| Right ascension | 20h 11m 57.898s[2] |
| Declination | −12° 23′ 32.65″[2] |
| Apparent magnitude (V) | +6.34[3] |
| Characteristics | |
| Spectral type | K0 III[4] |
| B−V color index | +1.21[3] |
| Variable type | Constant[1] |
| Astrometry | |
| Radial velocity (Rv) | +0.9[5] km/s |
| Proper motion (μ) | RA: −8.251[2] mas/yr Dec.: −18.278[2] mas/yr |
| Parallax (π) | 5.3163 ± 0.0275[2] mas |
| Distance | 614 ± 3 ly (188.1 ± 1.0 pc) |
| Absolute magnitude (MV) | +0.56[1] |
| Details | |
| Mass | 1.55[6] M☉ |
| Radius | 18.88+0.72 −0.95[7] R☉ |
| Luminosity | 139±2[7] L☉ |
| Surface gravity (log g) | 1.48±0.10[8] cgs |
| Temperature | 4,439±42[6] K |
| Metallicity [Fe/H] | −0.18±0.11[8] dex |
| Age | 3.35[6] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
Xi1 Capricorni, Latinized from ξ1 Capricorni, is an orange-hued star in the constellation Capricornus. Its name is a Bayer designation that is Latinized from ξ1 Capricorni, and abbreviated Xi1 Cap or ξ1 Cap. With an apparent visual magnitude of +6.34,[3] it is near the lower limit of brightness for stars that can be seen with the naked eye. Based upon an annual parallax shift of 5.32 mas as seen from Earth,[2] this system is located approximately 614 light-years (188 pc) 620 light-years distant from the Sun.
It is an evolved K-type giant star with a stellar classification of K0 III.[4] With an age of 3.35 billion years, this star has an estimated 1.55[6] times the mass of the Sun and is radiating 139[7] times the Sun's luminosity from its enlarged photosphere at an effective temperature of about 4,439 K.[6]
References
- ↑ 1.0 1.1 1.2 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters 38 (5): 331. doi:10.1134/S1063773712050015. Bibcode: 2012AstL...38..331A. XHIP record for this object at VizieR.
- ↑ 2.0 2.1 2.2 2.3 2.4 Vallenari, A. et al. (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. doi:10.1051/0004-6361/202243940. Gaia DR3 record for this source at VizieR.
- ↑ 3.0 3.1 3.2 Corben, P. M.; Stoy, R. H. (1968), "Photoelectric Magnitudes and Colours for Bright Southern Stars", Monthly Notes of the Astronomical Society of Southern Africa 27: 11, Bibcode: 1968MNSSA..27...11C.
- ↑ 4.0 4.1 Houk, Nancy; Smith-Moore, M. (1978), Michigan catalogue of two-dimensional spectral types for the HD stars, 4, Ann Arbor: Dept. of Astronomy, University of Michigan, Bibcode: 1988mcts.book.....H.
- ↑ Wilson, R. E. (1953), "General Catalogue of Stellar Radial Velocities", Carnegie Institute Washington D.C. Publication (Carnegie Institution for Science), Bibcode: 1953GCRV..C......0W.
- ↑ 6.0 6.1 6.2 6.3 6.4 Luck, R. Earle (September 2015), "Abundances in the Local Region. I. G and K Giants", The Astronomical Journal 150 (3): 23, doi:10.1088/0004-6256/150/3/88, 88, Bibcode: 2015AJ....150...88L.
- ↑ 7.0 7.1 7.2 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.
- ↑ 8.0 8.1 Soubiran, C. et al. (July 1, 2022), "Assessment of [Fe/H] determinations for FGK stars in spectroscopic surveys", Astronomy and Astrophysics 663: A4, doi:10.1051/0004-6361/202142409, ISSN 0004-6361, Bibcode: 2022A&A...663A...4S.
- ↑ "ksi01 Cap". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=ksi01+Cap.
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