鯨魚座κ2 (κ2 Ceti)是位於天球赤道星座鯨魚座的一顆孤獨的[7]黃巨星。它的視星等為5.66,雖然微弱但在足夠黑暗的場所仍可用裸眼看見[2]。基於從地球上觀測的恆星視差為10.11mas的[1],它距離太陽約為320 光年。
鯨魚座κ2 曾經被稱為金牛座g2[8]。
這是一顆演化中的G型巨星,恆星分類為G8III[3]。它是水平分支上的紅群聚恆星,這表明它正在其核心通過氦融合產生能量[5]。這顆恆星的質量是太陽的2.46倍,並且已經膨脹到太陽半徑的8.2倍。在5,007k的有效溫度下,它從光球發出的輻射是太陽光度的42倍[4]。
- ^ 1.0 1.1 1.2 1.3 1.4 1.5 van Leeuwen, F., Validation of the new Hipparcos reduction, Astronomy and Astrophysics, 2007, 474 (2): 653–664, Bibcode:2007A&A...474..653V, S2CID 18759600, arXiv:0708.1752
, doi:10.1051/0004-6361:20078357.
- ^ 2.0 2.1 2.2 2.3 Lucke, P. B., The OB stellar associations in the Large Magellanic Cloud, Astrophysical Journal Supplement Series, November 1974, 28: 73, Bibcode:1974ApJS...28...73L, doi:10.1086/190311.
- ^ 3.0 3.1 Houk, N.; Swift, C., Michigan catalogue of two-dimensional spectral types for the HD Stars, Michigan Spectral Survey (Ann Arbor, Michigan: Department of Astronomy, University of Michigan), 1999, 5, Bibcode:1999MSS...C05....0H.
- ^ 4.0 4.1 4.2 Jofré, E.; et al, Stellar parameters and chemical abundances of 223 evolved stars with and without planets, Astronomy & Astrophysics, 2015, 574: A50, Bibcode:2015A&A...574A..50J, S2CID 53666931, arXiv:1410.6422
, doi:10.1051/0004-6361/201424474.
- ^ 5.0 5.1 Mishenina, T. V.; et al, Elemental abundances in the atmosphere of clump giants, Astronomy and Astrophysics, September 2006, 456 (3): 1109–1120, Bibcode:2006A&A...456.1109M, S2CID 18764566, arXiv:astro-ph/0605615
, doi:10.1051/0004-6361:20065141.
- ^ kap02 Cet. SIMBAD. 斯特拉斯堡天文資料中心.
- ^ Eggleton, P. P.; Tokovinin, A. A., A catalogue of multiplicity among bright stellar systems, Monthly Notices of the Royal Astronomical Society, September 2008, 389 (2): 869–879, Bibcode:2008MNRAS.389..869E, S2CID 14878976, arXiv:0806.2878
, doi:10.1111/j.1365-2966.2008.13596.x.
- ^ Ridpath, Ian, Bayer's Uranometria and Bayer letters, Star Tales, [2024-02-16], (原始内容存档于2019-10-04).