南鱼座ζ
南鱼座ζ（ζ Piscis Austrini）是位于南天星座南鱼座的一颗橘色的恒星。它的视星等是+6.43等，接近裸眼可以看见的最暗星等极限。依据从地球测得的周年视差7.55mas[1]，它与太阳的距离大约是820光年。这颗恒星已经演化成为K型星，类型为K1III[3]。它被认为可能是变星[6]。
 | |
| 观测资料 历元 J2000.0 | |
|---|---|
| 星座 | 南鱼座 |
| 星官 | |
| 赤经 | 22h 30m 53.77352s[1] |
| 赤纬 | −26° 04′ 25.5040″[1] |
| 视星等（V） | +6.43[2] |
| 特性 | |
| 光谱分类 | K1 III[3] |
| B−V 色指数 | +1.08[2] |
| 天体测定 | |
| 自行 (μ) | 赤经：+40.83[1] mas/yr 赤纬：−75.04[1] mas/yr |
| 视差 (π) | 7.55 ± 0.55[1] mas |
| 距离 | 430 ± 30 ly (132 ± 10 pc) |
| 绝对星等 (MV) | +0.83[4] |
| 详细资料 | |
| 亮度 | 61[4] L☉ |
| 其他命名 | |
| 参考数据库 | |
| SIMBAD | 资料 |
参考资料
编辑- ^ 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, arXiv:0708.1752
, doi:10.1051/0004-6361:20078357.
- ^ 2.0 2.1 Corben, P. M.; Stoy, R. H., Photoelectric Magnitudes and Colours for Bright Southern Stars, Monthly Notes of the Astronomical Society of Southern Africa, 1968, 27: 11, Bibcode:1968MNSSA..27...11C.
- ^ 3.0 3.1 Houk, Nancy, Michigan catalogue of two-dimensional spectral types for the HD stars 3, Ann Arbor, Michigan: Department of Astronomy, University of Michigan, 1979, Bibcode:1982mcts.book.....H.
- ^ 4.0 4.1 Anderson, E.; Francis, Ch., XHIP: An extended hipparcos compilation, Astronomy Letters, 2012, 38 (5): 331, Bibcode:2012AstL...38..331A, arXiv:1108.4971 , doi:10.1134/S1063773712050015.
- ^ zet PsA. SIMBAD. 斯特拉斯堡天文资料中心. [2017-05-18].
- ^ Demartino, Robert; et al, Accurate Positions Of Suspected Variable Stars Near The South Galactic Pole, Information Bulletin on Variable Stars, April 1996, 4322: 1, Bibcode:1996IBVS.4322....1D.
