屏二
屏二（天兔座ε），又名HD 32887、HIP 23685、HR 1654、NSV 1826、SAO 170051，是天兔座的一颗恒星，视星等为3.166，其坐标为赤经 05h 05m 27.66537s，赤纬-22° 22′ 15.7239″。
 | |
| 觀測資料 曆元 J2000.0 | |
|---|---|
| 星座 | 天兔座 |
| 星官 | |
| 赤經 | 05h 05m 27.66537s[1] |
| 赤緯 | –22° 22′ 15.7239″[1] |
| 視星等（V） | +3.166[2] |
| 特性 | |
| 光谱分类 | K4 III[3] |
| U−B 色指数 | +1.783[2] |
| B−V 色指数 | +1.478[2] |
| 天体测定 | |
| 徑向速度 (Rv) | +1.0[4] km/s |
| 自行 (μ) | 赤经：+21.13[1] mas/yr 赤纬：–73.11[1] mas/yr |
| 视差 (π) | 15.29 ± 0.19[1] mas |
| 距离 | 213 ± 3 ly (65.4 ± 0.8 pc) |
| 绝对星等 (MV) | –1.02 ± 0.10[5] |
| 詳細資料 | |
| 質量 | 1.70 ± 0.19[5] M☉ |
| 半徑 | 40.1 ± 3.2[5] R☉ |
| 表面重力 (log g) | 1.43 ± 0.09[5] |
| 亮度 | 372[6] L☉ |
| 溫度 | 4,131[5] K |
| 金属量 [Fe/H] | –0.02[5] dex |
| 年齡 | 1.72 ± 0.47[5] Gyr |
| 其他命名 | |
| 參考資料庫 | |
| SIMBAD | 资料 |
参考文献
- ^ 1.0 1.1 1.2 1.3 1.4 van Leeuwen, F. Validation of the new Hipparcos reduction. Astronomy and Astrophysics. November 2007, 474 (2): 653–664. Bibcode:2007A&A...474..653V. arXiv:0708.1752
. doi:10.1051/0004-6361:20078357.
- ^ 2.0 2.1 2.2 Gutierrez-Moreno, Adelina; et al. A System of photometric standards. Publ. Dept. Astron. Univ. Chile (Publicaciones Universidad de Chile, Department de Astronomy). 1966, 1: 1–17. Bibcode:1966PDAUC...1....1G.
- ^ Houk, Nancy; Smith-Moore, M., Michigan catalogue of two-dimensional spectral types for the HD stars, Michigan Catalogue of Two-dimensional Spectral Types for the HD Stars. Volume 4 (Ann Arbor: Dept. of Astronomy, University of Michigan), 1978, 4, Bibcode:1988MSS...C04....0H
- ^ Wielen, R.; et al, Sixth Catalogue of Fundamental Stars (FK6). Part I. Basic fundamental stars with direct solutions, Veröff. Astron. Rechen-Inst. Heidelb (Astronomisches Rechen-Institut Heidelberg), 1999, 35 (35): 1, Bibcode:1999VeARI..35....1W
- ^ 5.0 5.1 5.2 5.3 5.4 5.5 5.6 da Silva, L.; et al, Basic physical parameters of a selected sample of evolved stars, Astronomy and Astrophysics, November 2006, 458 (2): 609–623, Bibcode:2006A&A...458..609D, arXiv:astro-ph/0608160 , doi:10.1051/0004-6361:20065105
- ^ di Mauro, M. P.; et al. Fletcher, Karen; Thompson, Michael , 编. Proceedings of SOHO 18/GONG 2006/HELAS I, Beyond the spherical Sun (ESA SP-624). Proceedings of SOHO 18/GONG 2006/HELAS I 624 (Sheffield, UK). October 2006: 118. Bibcode:2006ESASP.624E.118D. 参数
|journal=与模板{{cite conference}}不匹配（建议改用{{cite journal}}或|book-title=） (帮助);|contribution=被忽略 (帮助) - ^ HD 32887 -- Variable Star. SIMBAD Astronomical Object Database. Centre de Données astronomiques de Strasbourg. [2006-10-29].
