Kappa2 Sculptoris

For other star systems with this Bayer designation, see κ Sculptoris.
Kappa2 Sculptoris
Observation data
Epoch J2000.0      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 mas[1]
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. ^ a b c d e f van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv:0708.1752, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357, S2CID 18759600.
  2. ^ 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.
  3. ^ a b 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°, 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, S2CID 59451347, A61.
  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. ^ a b McDonald, I.; et al. (2012), "Fundamental Parameters and Infrared Excesses of Hipparcos Stars", Monthly Notices of the Royal Astronomical Society, 427 (1): 343–57, arXiv:1208.2037, Bibcode:2012MNRAS.427..343M, doi:10.1111/j.1365-2966.2012.21873.x, S2CID 118665352.
  7. ^ a b c d Soubiran, C.; et al. (June 2010), "The PASTEL catalogue of stellar parameters", Astronomy and Astrophysics, 515: A111, arXiv:1004.1069, Bibcode:2010A&A...515A.111S, doi:10.1051/0004-6361/201014247, S2CID 118362423.
  8. ^ "kap02 Scl". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2017-06-01.{{cite web}}: CS1 maint: postscript (link)
  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, arXiv:0806.2878, Bibcode:2008MNRAS.389..869E, doi:10.1111/j.1365-2966.2008.13596.x, S2CID 14878976.
  10. ^ Mason, B. D.; et al. (2014), "The Washington Visual Double Star Catalog", The Astronomical Journal, 122 (6): 3466, Bibcode:2001AJ....122.3466M, doi:10.1086/323920, retrieved 2015-07-22

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