羽林军三

羽林军三宝瓶座4141 Aquarii,缩写为41 Aqr)是在天球赤道上的星座宝瓶座内的双星[3],英译名称宝瓶座41是依据佛氏命名法而来的。它的视星等为5.354等[2],与地球的距离大约是230光年(71秒差距)。 较亮的一颗是红群聚[7]巨星光谱类型为K0III,星等为5.73。在角距离5.148角秒处,较暗的一颗是F型主序星,星等为7.16等,光谱类型为F8V[3]

羽林军三(宝瓶座41)
观测资料
历元 J2000
星座 宝瓶座
星官 羽林军室宿
赤经 22h 14m 18.03271s[1]
赤纬 –21° 04′ 28.4330″[1]
视星等(V) 5.354[2]
特性
光谱分类K0 III + F8 V[3]
U−B 色指数+0.465[2]
B−V 色指数+0.834[2]
天体测定
径向速度 (Rv)–23.7[4] km/s
自行 (μ) 赤经:+24.30[1] mas/yr
赤纬:+56.07[1] mas/yr
视差 (π)13.97 ± 0.73[1] mas
距离230 ± 10 ly
(72 ± 4 pc)
详细资料
表面重力 (log g)2.85[5]
温度4,750[5] K
金属量 [Fe/H]–0.13[5] dex
其他命名
BD–21 6180、HD 210960、HIP 109786、HR 8480、SAO 190986[6]
参考资料库
SIMBAD资料

参考资料

  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 2.3 Rakos, K. D.; et al, Photometric and astrometric observations of close visual binaries, Astronomy and Astrophysics Supplement Series, February 1982, 47: 221–235, Bibcode:1982A&AS...47..221R. 
  3. ^ 3.0 3.1 3.2 Eggleton, P. P.; Tokovinin, A. A., A catalogue of multiplicity among bright stellar systems, Monthly Notices of the Royal Astronomical Society, September 2008, 389 (2): 869–879, Bibcode:2008MNRAS.389..869E, arXiv:0806.2878 , doi:10.1111/j.1365-2966.2008.13596.x. 
  4. ^ Wilson, Ralph Elmer, General Catalogue of Stellar Radial Velocities, Washington: Carnegie Institution of Washington, 1953, Bibcode:1953GCRV..C......0W. 
  5. ^ 5.0 5.1 5.2 McWilliam, Andrew, High-resolution spectroscopic survey of 671 GK giants, Astrophysical Journal Supplement Series, December 1990, 74: 1075–1128, Bibcode:1990ApJS...74.1075M, doi:10.1086/191527. 
  6. ^ 41 Aqr -- Star in double system, SIMBAD Astronomical Database (Centre de Données astronomiques de Strasbourg), [2012-02-23], (原始内容存档于2020-09-15). 
  7. ^ Alves, David R., K-Band Calibration of the Red Clump Luminosity, The Astrophysical Journal, August 2000, 539 (2): 732–741, Bibcode:2000ApJ...539..732A, arXiv:astro-ph/0003329 , doi:10.1086/309278.