尾宿四
 | 此条目需要扩充。 (2018年2月23日) |
  | |
| 观测资料 历元 J2000 | |
|---|---|
| 星座 | 天蝎座 |
| 星官 | |
| 赤经 | 17h 12m 09.19565s[1] |
| 赤纬 | –43° 14′ 21.0905″[1] |
| 视星等（V） | 3.33[2] |
| 特性 | |
| 光谱分类 | F5 IV[3] |
| U−B 色指数 | +0.09[2] |
| B−V 色指数 | +0.41[2] |
| 天体测定 | |
| 径向速度 (Rv) | –27.0[4] km/s |
| 自行 (μ) | 赤经：+24.47[1] mas/yr 赤纬：–288.55[1] mas/yr |
| 视差 (π) | 44.39 ± 0.16[1] mas |
| 距离 | 73.5 ± 0.3 ly (22.53 ± 0.08 pc) |
| 绝对星等 (MV) | +1.58[5] |
| 详细资料 | |
| 质量 | 1.75[6] M☉ |
| 表面重力 (log g) | 3.10[3] |
| 亮度 | 17.7[6] L☉ |
| 温度 | 6,519[3] K |
| 金属量 [Fe/H] | 0.05[5] dex |
| 自转速度 (v sin i) | 150.0[6] km/s |
| 年龄 | 1.1[5] Gyr |
| 其他命名 | |
| 参考资料库 | |
| SIMBAD | 资料 |
尾宿四（天蝎座η）是一颗位于天蝎座的恒星，其视星等为3.33[2]。
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 2.3 Bok, B. J.; Bok, P. F.; Miller, E. W., Photometric standards for the southern hemisphere. II, Astronomical Journal, November 1972, 77: 733, Bibcode:1972AJ.....77..733B, doi:10.1086/111346
- ^ 3.0 3.1 3.2 Gray, R. O.; et al, Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 pc-The Southern Sample, The Astronomical Journal, July 2006, 132 (1): 161–170, Bibcode:2006AJ....132..161G, arXiv:astro-ph/0603770 , doi:10.1086/504637
- ^ Evans, D. S., Batten, Alan Henry; Heard, John Frederick , 编, The Revision of the General Catalogue of Radial Velocities, University of Toronto: International Astronomical Union, June 20–24, 1966 [2009-09-10], （原始内容存档于2019-06-26）
|booktitle=被忽略 (帮助) - ^ 5.0 5.1 5.2 Holmberg, J.; Nordstrom, B.; Andersen, J. The Geneva-Copenhagen survey of the solar neighbourhood. III. Improved distances, ages, and kinematics. Astronomy and Astrophysics. July 2009, 501 (3): 941–947. Bibcode:2009A&A...501..941H. arXiv:0811.3982 . doi:10.1051/0004-6361/200811191.
- ^ 6.0 6.1 6.2 Mallik, Sushma V.; Parthasarathy, M.; Pati, A. K., Lithium and rotation in F and G dwarfs and subgiants, Astronomy and Astrophysics, October 2003, 409: 251–261, Bibcode:2003A&A...409..251M, doi:10.1051/0004-6361:20031084
- ^ LTT 6848 -- High proper-motion Star, SIMBAD (Centre de Données astronomiques de Strasbourg), [2012-02-10], （原始内容存档于2020-11-05）
