Astronomy:Kappa2 Sculptoris

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Short description: Star in the constellation Sculptor


Kappa2 Sculptoris
Observation data
Equinox J2000.0]] (ICRS)
Constellation Sculptor
Right ascension  00h 11m 34.41935s[1]
Declination −27° 47′ 59.0290″[1]
Apparent magnitude (V) +5.42[2]
Characteristics
Spectral type K2 III[3]
B−V color index +1.35[2]
Astrometry
Radial velocity (Rv)−5.6±0.8[4] km/s
Proper motion (μ) RA: +3.42[1] mas/yr
Dec.: +19.80[1] mas/yr
Parallax (π)4.11 ± 0.63[1] mas
Distanceapprox. 800 ly
(approx. 240 pc)
Absolute magnitude (MV)−1.46[5]
Details
Luminosity619[6] L☉
Surface gravity (log g)2.020[7] cgs
Temperature4,160[7] K
Metallicity [Fe/H]−0.120[7] dex
Other designations
κ2 Scl, CD−28° 26, FK5 5, HD 720, HIP 930, HR 34, SAO 166103, WDS J00116-2748A[8]
Database references
SIMBADdata

Kappa2 Sculptoris, Latinized from κ2 Sculptoris, is a solitary,[9] orange-hued star in the southern constellation of Sculptor. It is faintly visible to the naked eye, with a combined apparent visual magnitude of +5.42.[2] Based upon an annual parallax shift of 4.11 mas as measured from Earth,[1] it is located approximately 800 light years from the Sun.

This is an evolved K-type giant star with a stellar classification of K2 III.[3] It is radiating 619[6] times the solar luminosity from its photosphere at an effective temperature of 4,160.[7] There is a faint optical companion with visual magnitude 21.0 located at an angular separation of 44.2 arc seconds along a position angle of 289°, as of 2010.[10]

References

  1. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics 474 (2): 653–664, doi:10.1051/0004-6361:20078357, Bibcode: 2007A&A...474..653V. 
  2. ↑ 2.0 2.1 2.2 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. ↑ 3.0 3.1 Houk, Nancy (1979), "Michigan catalogue of two-dimensional spectral types for the HD stars", Michigan Catalogue of Two-dimensional Spectral Types for the HD Stars. Volume_3. Declinations -40.0° to -26.0° (Ann Arbor, Michigan: Dept. of Astronomy, University of Michigan) 3, 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, doi:10.1051/0004-6361/201219219, A61, Bibcode: 2012A&A...546A..61D. 
  5. ↑ Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters 38 (5): 331, doi:10.1134/S1063773712050015, Bibcode: 2012AstL...38..331A. 
  6. ↑ 6.0 6.1 McDonald, I. et al. (2012), "Fundamental Parameters and Infrared Excesses of Hipparcos Stars", Monthly Notices of the Royal Astronomical Society 427 (1): 343–57, doi:10.1111/j.1365-2966.2012.21873.x, Bibcode: 2012MNRAS.427..343M. 
  7. ↑ 7.0 7.1 7.2 7.3 Soubiran, C. et al. (June 2010), "The PASTEL catalogue of stellar parameters", Astronomy and Astrophysics 515: A111, doi:10.1051/0004-6361/201014247, Bibcode: 2010A&A...515A.111S. 
  8. ↑ "kap02 Scl". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=kap02+Scl. 
  9. ↑ 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, doi:10.1111/j.1365-2966.2008.13596.x, Bibcode: 2008MNRAS.389..869E. 
  10. ↑ Mason, B. D. et al. (2014), "The Washington Visual Double Star Catalog", The Astronomical Journal 122 (6): 3466, doi:10.1086/323920, Bibcode: 2001AJ....122.3466M, http://vizier.u-strasbg.fr/viz-bin/VizieR?-source=B/wds, retrieved 2015-07-22 



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