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) | ±0.8 −5.6[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 |
Distance | approx. 800 ly (approx. 240 pc) |
Details | |
Luminosity | 619[5] L☉ |
Surface gravity (log g) | 2.020[6] cgs |
Temperature | 4,160[6] K |
Metallicity [Fe/H] | −0.120[6] dex |
Other designations | |
Database references | |
SIMBAD | data |
Kappa2 Sculptoris is a solitary,[8] orange-hued star in the southern constellation of Sculptor. It is faintly visibile 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[5] times the solar luminosity from its photosphere at an effective temperature of 4,160.[6] 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.[9]
References
- 1 2 3 4 5 6 van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, Bibcode:2007A&A...474..653V, arXiv:0708.1752 , doi:10.1051/0004-6361:20078357.
- 1 2 3 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.
- 1 2 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_ƒ0 to -26_ƒ0, Ann Arbor, Michigan: Dept. of Astronomy, University of Michigan, 3, Bibcode:1982MSS...C03....0H.
- ↑ 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, Bibcode:2012A&A...546A..61D, arXiv:1208.3048 , doi:10.1051/0004-6361/201219219, A61.
- 1 2 McDonald, I.; et al. (2012), "Fundamental Parameters and Infrared Excesses of Hipparcos Stars", Monthly Notices of the Royal Astronomical Society, 427 (1): 343–57, Bibcode:2012MNRAS.427..343M, arXiv:1208.2037 , doi:10.1111/j.1365-2966.2012.21873.x.
- 1 2 3 4 Soubiran, C.; et al. (June 2010), "The PASTEL catalogue of stellar parameters", Astronomy and Astrophysics, 515: A111, Bibcode:2010A&A...515A.111S, arXiv:1004.1069 , doi:10.1051/0004-6361/201014247.
- ↑ "kap02 Scl -- Star", SIMBAD Astronomical Database, Centre de Données astronomiques de Strasbourg, retrieved 2017-06-01.
- ↑ 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, Bibcode:2008MNRAS.389..869E, arXiv:0806.2878 , doi:10.1111/j.1365-2966.2008.13596.x.
- ↑ Mason, B. D.; et al. (2014), The Washington Visual Double Star Catalog, Bibcode:2001AJ....122.3466M, doi:10.1086/323920, retrieved 2015-07-22
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