Xi Sculptoris

Xi Sculptoris, Latinized from ξ Sculptoris, is a solitary[6] orange-hued star in the southern constellation of Sculptor, near the southern constellation boundary with Phoenix. It is just visible to the naked eye as a dim point of light with an apparent visual magnitude of 5.59.[2] The distance to Xi Sculptoris is approximately 489 light years based on parallax, while it is drifting closer with a radial velocity of −31 km/s.[4] It has an absolute magnitude of −0.39.[2]

Xi Sculptoris
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Sculptor
Right ascension 01h 01m 18.27548s[1]
Declination −38° 54′ 59.5033″[1]
Apparent magnitude (V) 5.59[2]
Characteristics
Spectral type K1 III[3]
B−V color index +1.185±0.008[2]
Astrometry
Radial velocity (Rv)−31.1±2.9[4] km/s
Proper motion (μ) RA: +66.892[1] mas/yr
Dec.: +49.891[1] mas/yr
Parallax (π)6.6662 ± 0.0829[1] mas
Distance489 ± 6 ly
(150 ± 2 pc)
Absolute magnitude (MV)−0.39[2]
Details
Radius22.29+1.18
−1.74[1] R☉
Luminosity181.8±2.8[1] L☉
Temperature4,489+186
−114[1] K
Other designations
ξ Scl, CD−39° 260, HD 6055, HIP 4770, HR 288, SAO 192870[5]
Database references
SIMBADdata

This object is an aging giant star with a stellar classification of K1 III,[3] which indicates it has exhausted the supply of hydrogen at its core then expanded and cooled off the main sequence. At present it has 22[1] times the girth of the Sun. It is radiating 182 times the luminosity of the Sun from its swollen photosphere at an effective temperature of 4,489 K.[1]

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. 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.
  3. Houk, Nancy (1979), Michigan catalogue of two-dimensional spectral types for the HD stars, 3, Ann Arbor, Michigan: Dept. of Astronomy, University of Michigan, Bibcode:1982mcts.book.....H.
  4. 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, arXiv:1208.3048, Bibcode:2012A&A...546A..61D, doi:10.1051/0004-6361/201219219, A61.
  5. "ksi Scl". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-10-08.
  6. Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society, 389 (2): 869–879, arXiv:0806.2878, Bibcode:2008MNRAS.389..869E, doi:10.1111/j.1365-2966.2008.13596.x.
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