軒轅十μ Leo / 狮子座μ)是在獅子座的一顆恆星,他在西方的傳統名稱是 Rasalas (阿拉伯的意思是"獅子的頭")和Alshemali

Mu Leonis
觀測資料
曆元 J2000.0ICRS
星座 狮子座
星官
赤經 09h 52m 45.81654s[1]
赤緯 +26° 00′ 25.0319″[1]
視星等(V) 3.88[2]
特性
光谱分类K2 IIIb CN1 Ca1[3]
U−B 色指数+1.38[2]
B−V 色指数+1.23[2]
天体测定
徑向速度 (Rv)14.03±0.19[4] km/s
自行 (μ) 赤经:−217.31[1] mas/yr
赤纬:−54.26[1] mas/yr
视差 (π)26.28 ± 0.16[1] mas
距离124.1 ± 0.8 ly
(38.1 ± 0.2 pc)
绝对星等 (MV)+0.83[5]
詳細資料
質量1.5±0.1[6] M
半徑14[4] R
表面重力 (log g)2.5[4]
亮度63[4] L
溫度4,436[4] K
金属量 [Fe/H]+0.17[4] dex
自轉速度 (v sin i)4.5[4] km/s
年齡3.35±0.70[6] Gyr
其他命名
Rasalas, Alshemali, μ Leo, 24 Leonis, BD+26°2019, HD 85503, HIP 48455, HR 3905, SAO 81064[7]
參考資料庫
SIMBAD资料

軒轅十(獅子座 μ)的光譜分類是K3,視星等 +4.1等,距離地球大約133光年

它的赤道座標为 (2000.0分點):

参考资料

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, 2007, 474 (2): 653–664, Bibcode:2007A&A...474..653V, S2CID 18759600, arXiv:0708.1752 , doi:10.1051/0004-6361:20078357. 
  2. ^ 2.0 2.1 2.2 Mermilliod, J.-C., Compilation of Eggen's UBV data, transformed to UBV (unpublished), Catalogue of Eggen's UBV Data (SIMBAD), 1986, Bibcode:1986EgUBV........0M. 
  3. ^ Keenan, P.; McNeil, R., The Perkins catalog of revised MK types for the cooler stars, Astrophysical Journal Supplement Series, October 1989, 71: 245–266, Bibcode:1989ApJS...71..245K, doi:10.1086/191373. 
  4. ^ 4.0 4.1 4.2 4.3 4.4 4.5 4.6 Massarotti, Alessandro; et al, Rotational and Radial Velocities for a Sample of 761 HIPPARCOS Giants and the Role of Binarity, The Astronomical Journal, January 2008, 135 (1): 209–231, Bibcode:2008AJ....135..209M, doi:10.1088/0004-6256/135/1/209. 
  5. ^ Cardini, D., Mg II chromospheric radiative loss rates in cool active and quiet stars, Astronomy and Astrophysics, January 2005, 430: 303–311, Bibcode:2005A&A...430..303C, S2CID 12136256, arXiv:astro-ph/0409683 , doi:10.1051/0004-6361:20041440. 
  6. ^ 6.0 6.1 Lee, B.-C.; et al. Planetary Companions in K giants β Cancri, μ Leonis, and β Ursae Minoris. Astronomy & Astrophysics. 2014, 566: 7. Bibcode:2014A&A...566A..67L. S2CID 118631934. arXiv:1405.2127 . doi:10.1051/0004-6361/201322608. A67. 
  7. ^ * mu. Leo. SIMBAD. 斯特拉斯堡天文資料中心.