打开主菜单

屏二天兔座ε),又名HD 32887HIP 23685HR 1654NSV 1826SAO 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″。

屏二
Diagram showing star positions and boundaries of the Lepus constellation and its surroundings
Cercle rouge 100%.svg

屏二的位置 (红圈处)
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
2 Leporis, BD-22 1000, FK5 186, HD 32887, HIP 23685, HR 1654, NSV 1826, SAO 170051.[7]
參考資料庫
SIMBADdata

参考文献编辑

  1. ^ 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. ^ 2.0 2.1 2.2 Gutierrez-Moreno, Adelina; 等. 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. 
  3. ^ 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 
  4. ^ Wielen, R.; 等, 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. ^ 5.0 5.1 5.2 5.3 5.4 5.5 5.6 da Silva, L.; 等, 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 
  6. ^ di Mauro, M. P.; 等. Asteroseismology of K giants. (编) Fletcher, Karen; Thompson, Michael. 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. 
  7. ^ HD 32887 -- Variable Star. SIMBAD Astronomical Object Database. Centre de Données astronomiques de Strasbourg. [2006-10-29].