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Xi Capricorni

Location of ξ Capricorni (circled)
Observation data Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation	Capricornus
Right ascension	20 11 57.89778
Declination	−12° 23′ 32.6484″
Apparent magnitude (V)	+6.34
Characteristics
Spectral type	K0 III
B−V color index	+1.21
Astrometry
Radial velocity (Rv)	+0.9 km/s
Proper motion (μ)	RA: −8.004 mas/yr Dec.: −18.202 mas/yr
Parallax (π)	5.2607 ± 0.0577 mas
Distance	620 ± 7 ly (190 ± 2 pc)
Absolute magnitude (MV)	+0.56
Details
Mass	1.55 M☉
Radius	18.88+0.72 −0.95 R☉
Luminosity	139±2 L☉
Temperature	4,439±42 K
Age	3.35 Gyr
Other designations
ξ Cap, 1 Cap, BD−12° 5664, GC 28026, HD 191753, HIP 99529, HR 7712, SAO 163328
Database references
SIMBAD	data

Xi Capricorni, Latinized from ξ Capricorni, is an orange-hued star in the constellation Capricornus. With an apparent visual magnitude of +6.34, 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 5.26 mas as seen from Earth, this system is located roughly 620 light-years from the Sun.

It is an evolved K-type giant star with a stellar classification of K0 III. With an age of 3.35 billion years, this star has an estimated 1.55 times the mass of the Sun and is radiating 139 times the Sun's luminosity from its enlarged photosphere at an effective temperature of about 4,439 K.

References

1. ^ 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.
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.
3. ^ 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.
4. 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.
5. 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, S2CID 119257644.
6. ^ 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. "ksi01 Cap". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2017-08-31.

v t e Constellation of Capricornus
Capricornus in Chinese astronomy List of stars in Capricornus
Stars	Bayer α (Prima Giedi) α (Algedi) β (Dabih) β γ (Nashira) δ (Deneb Algedi) ε ζ η θ ι κ λ μ ν (Alshat) ξ ξ ο ο π ρ σ τ τ υ φ χ ψ ω Flamsteed 3 4 17 19 20 21 24 (A) 27 29 30 31 33 35 36 (b) 37 41 42 44 45 46 (c) 47 (c) 50 Variable R HR 7722 7845 7898 HD 197027 202206 204313 Other HATS-3 LP 816-60
Exoplanets HD 192310 b c HD 202206 c HD 204313 b HD 202772 Ab PSO J318.5−22
Star clusters Messier 30 Palomar 12
Galaxies	NGC 6907 7016 7019 7030 7035 7035A 7073 Other IC 1337 PKS 2126-158
Galaxy clusters HCG 87
Category

• K-type giants
• Bayer objects
• Capricornus
• Durchmusterung objects
• Flamsteed objects
• Henry Draper Catalogue objects
• Hipparcos objects
• Bright Star Catalogue objects