Xi1 Capricorni

For other stars with this Bayer designation, see ξ Capricorni.
Xi1 Capricorni
Location of ξ1 Capricorni (circled)
Observation data
Epoch J2000.0      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 mas/yr[2]
Dec.: −18.278 mas/yr[2]
Parallax (π)5.3163±0.0275 mas[2]
Distance614 ± 3 ly
(188.1 ± 1.0 pc)
Absolute magnitude (MV)+0.56[1]
Details
Mass1.55[6] M☉
Radius18.88+0.72
−0.95[7] R☉
Luminosity139±2[7] L☉
Surface gravity (log g)1.48±0.10[8] cgs
Temperature4,439±42[6] K
Metallicity [Fe/H]−0.18±0.11[8] dex
Age3.35[6] Gyr
Other designations
ξ1 Cap, 1 Cap, BD−12°5664, GC 28026, HD 191753, HIP 99529, HR 7712, SAO 163328[9]
Database references
SIMBADdata

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. ^ a b c 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. XHIP record for this object at VizieR.
  2. ^ a b c d e Vallenari, A.; et al. (Gaia collaboration) (2023), "Gaia Data Release 3. Summary of the content and survey properties", Astronomy and Astrophysics, 674: A1, arXiv:2208.00211, Bibcode:2023A&A...674A...1G, doi:10.1051/0004-6361/202243940, S2CID 244398875. Gaia DR3 record for this source at VizieR.
  3. ^ a b c 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. ^ a b Houk, Nancy; Smith-Moore, M. (1978), Michigan catalogue of two-dimensional spectral types for the HD stars, vol. 4, Ann Arbor: Dept. of Astronomy, University of Michigan, Bibcode:1988mcts.book.....H.
  5. ^ Wilson, R. E. (1953), "General Catalogue of Stellar Radial Velocities", Carnegie Institute Washington D.C. Publication, Carnegie Institution for Science, Bibcode:1953GCRV..C......0W, LCCN 54001336.
  6. ^ a b c d e Luck, R. Earle (September 2015), "Abundances in the Local Region. I. G and K Giants", The Astronomical Journal, 150 (3): 23, arXiv:1507.01466, Bibcode:2015AJ....150...88L, doi:10.1088/0004-6256/150/3/88, S2CID 118505114, 88.
  7. ^ a b c 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.
  8. ^ a b Soubiran, C.; et al. (July 1, 2022), "Assessment of [Fe/H] determinations for FGK stars in spectroscopic surveys", Astronomy and Astrophysics, 663: A4, arXiv:2112.07545, Bibcode:2022A&A...663A...4S, doi:10.1051/0004-6361/202142409, ISSN 0004-6361.
  9. ^ "ksi01 Cap", SIMBAD, Centre de données astronomiques de Strasbourg, retrieved 2017-08-31.
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