房宿二
 
Location of ρ Scorpii (circled) | |
| 觀測資料 曆元 J2000 | |
|---|---|
| 星座 | 天蝎座 |
| 星官 | |
| 赤經 | 15h 56m 53.07624s[1] |
| 赤緯 | -29° 12′ 50.6612″ [1] |
| 視星等（V） | 3.86[2] |
| 特性 | |
| 光谱分类 | B2 IV[3] |
| U−B 色指数 | -0.82[2] |
| B−V 色指数 | -0.20[2] |
| 天体测定 | |
| 徑向速度 (Rv) | −0.40[4] km/s |
| 自行 (μ) | 赤经：−15.68[1] mas/yr 赤纬：−24.88[1] mas/yr |
| 视差 (π) | 6.91 ± 0.19[1] mas |
| 距离 | 470 ± 10 ly (145 ± 4 pc) |
| 绝对星等 (MV) | −1.93[5] |
| 軌道[6] | |
| 绕行周期 (P) | 4.0033 d |
| 偏心率 (e) | 0.27 |
| 近心点 历元 (T) | 2442178.6060 JD |
| 近心点幅角 (ω) (secondary) | 231° |
| 半振幅 (K1) (primary) | 16.40 km/s |
| 詳細資料 | |
| 質量 | 7.94±0.55[3] M☉ |
| 半徑 | 5.0[7] R☉ |
| 亮度 (bolometric) | 3,432[3] L☉ |
| 溫度 | 21,150[3] K |
| 自轉速度 (v sin i) | 113[8] km/s |
| 其他命名 | |
| 參考資料庫 | |
| SIMBAD | data |
参考文献
- van Leeuwen, F., , Astronomy and Astrophysics, November 2007, 474 (2): 653–664, Bibcode:2007A&A...474..653V, arXiv:0708.1752, doi:10.1051/0004-6361:20078357.
- Ducati, J. R., , CDS/ADC Collection of Electronic Catalogues, 2002, 2237, Bibcode:2002yCat.2237....0D.
- Hohle, M. M.; 等, , Astronomische Nachrichten, April 2010, 331 (4): 349, Bibcode:2010AN....331..349H, arXiv:1003.2335, doi:10.1002/asna.200911355.
- Evans, D. S., , Batten, Alan Henry; Heard, John Frederick (编), , University of Toronto: International Astronomical Union, June 20–24, 1966, Bibcode:1967IAUS...30...57E.
- Anderson, E.; Francis, Ch., , Astronomy Letters, 2012, 38 (5): 331, Bibcode:2012AstL...38..331A, arXiv:1108.4971, doi:10.1134/S1063773712050015.
- Pourbaix, D.; 等, , Astronomy and Astrophysics, September 2004, 424: 727–732, Bibcode:2004A&A...424..727P, arXiv:astro-ph/0406573, doi:10.1051/0004-6361:20041213.
- Pasinetti Fracassini, L. E.; 等, , Astronomy and Astrophysics, February 2001, 367 (2): 521–524, Bibcode:2001A&A...367..521P, arXiv:astro-ph/0012289, doi:10.1051/0004-6361:20000451.
- Simón-Díaz, S.; Herrero, A., , Astronomy & Astrophysics, 2014, 562: A135, Bibcode:2014A&A...562A.135S, arXiv:1311.3360, doi:10.1051/0004-6361/201322758.
- , SIMBAD Astronomical Database (Centre de Données astronomiques de Strasbourg), [2016-09-22].
外部链接
- Kaler, James B., , Stars (University of Illinois), June 20, 2008 [2016-09-23], （原始内容存档于2013-01-08）.
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