太阳守
  | |
| 观测资料 历元 J2000.0 | |
|---|---|
| 星座 | 大熊座 |
| 星官 | 太阳守 |
| 赤经 | 11h 46m 3.01407s[1] |
| 赤纬 | +47° 46′ 45.8626″[1] |
| 视星等（V） | 3.72[2] |
| 特性 | |
| 演化阶段 | Horizontal branch[3] |
| 光谱分类 | K0.5 IIIb[4] |
| U−B 色指数 | +1.16[2] |
| B−V 色指数 | +1.18[2] |
| 天体测定 | |
| 径向速度 (Rv) | −9.02±0.20[2] km/s |
| 自行 (μ) | 赤经：−138.29[1] mas/yr 赤纬：28.57[1] mas/yr |
| 视差 (π) | 17.76 ± 0.16[1] mas |
| 距离 | 184 ± 2 ly (56.3 ± 0.5 pc) |
| 绝对星等 (MV) | 0.10±0.02[5] |
| 详细资料 [2] | |
| 质量 | 1.49[6] M☉ |
| 半径 | 20.8±0.8[7] R☉ |
| 表面重力 (log g) | 2.2 |
| 亮度 | 158 L☉ |
| 温度 | 4,416±9 K |
| 金属量 [Fe/H] | −0.44 dex |
| 自转速度 (v sin i) | 2.3 km/s |
| 其他命名 | |
Alkaphrah[8]、El Koprah[8]、Taiyangshou、Chi UMa, χ UMa、63 Ursae Majoris、BD+48°1966、FK5 441、HD 102224、HIP 57399、HR 4518、SAO 43886[9]
| |
| 参考数据库 | |
| SIMBAD | 资料 |
大熊座χ，又名BD+48 1966，HD 102224、SAO 43886、HR 4518，是大熊座的一颗恒星[9][10]，视星等为3.71，位于银经150.32，银纬65.72，其B1900.0坐标为赤经11h 40m 46.3s，赤纬+48° 65.72′ 2″。
参考文献
[编辑]- ^ 1.0 1.1 1.2 1.3 1.4 van Leeuwen, F., Validation of the new Hipparcos reduction, Astronomy and Astrophysics, 2007, 474 (2): 653–664, Bibcode:2007A&A...474..653V, S2CID 18759600, arXiv:0708.1752
, doi:10.1051/0004-6361:20078357.
- ^ 2.0 2.1 2.2 2.3 2.4 Jennens, P. A.; Helfer, H. L., A new photometric metal abundance and luminosity calibration for field G and K giants, Monthly Notices of the Royal Astronomical Society, September 1975, 172 (3): 667–679, Bibcode:1975MNRAS.172..667J, doi:10.1093/mnras/172.3.667 .
- ^ Alves, David R., K-Band Calibration of the Red Clump Luminosity, The Astrophysical Journal, August 2000, 539 (2): 732–741, Bibcode:2000ApJ...539..732A, S2CID 16673121, arXiv:astro-ph/0003329 , doi:10.1086/309278.
- ^ Keenan, Philip C.; McNeil, Raymond C., The Perkins catalog of revised MK types for the cooler stars, Astrophysical Journal Supplement Series, 1989, 71: 245, Bibcode:1989ApJS...71..245K, doi:10.1086/191373.
- ^ Park, Sunkyung; et al, Wilson-Bappu Effect: Extended to Surface Gravity, The Astronomical Journal, 2013, 146 (4): 73, Bibcode:2013AJ....146...73P, S2CID 119187733, arXiv:1307.0592 , doi:10.1088/0004-6256/146/4/73.
- ^ Luck, R. Earle, Abundances in the Local Region. I. G and K Giants, Astronomical Journal, 2015, 150 (3), 88, Bibcode:2015AJ....150...88L, S2CID 118505114, arXiv:1507.01466 , doi:10.1088/0004-6256/150/3/88.
- ^ Nordgren, Tyler E.; et al, Stellar Angular Diameters of Late-Type Giants and Supergiants Measured with the Navy Prototype Optical Interferometer, The Astronomical Journal, December 1999, 118 (6): 3032–3038 [2022-11-14], Bibcode:1999AJ....118.3032N, doi:10.1086/301114 , （原始内容存档于2015-09-08）.
- ^ 8.0 8.1 Bakich, Michael E., The Cambridge Guide to the Constellations, Cambridge University Press: 112, 116, 1995, ISBN 0521449219
- ^ 9.0 9.1 [ chi UMa] 请检查
|url=值 (帮助). SIMBAD. 斯特拉斯堡天文资料中心. [2017-02-22]. - ^ VizieR Detailed Page. [2012-07-13]. （原始内容存档于2016-03-05）.
<references>标签中name属性为“Eggleton_Tokovinin_2008”的参考文献没有在文中使用
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