墳墓二

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宝瓶座γ
Diagram showing star positions and boundaries of the Aquarius constellation and its surroundings
Cercle rouge 100%.svg

宝瓶座γ的位置(圈记)
觀測資料
曆元 J2000
星座 宝瓶座
星官 坟墓 (危宿)
赤經 22h 21m 39.37542s[1]
赤緯 –01° 23′ 14.4031″[1]
視星等(V) 3.849[2]
特性
光谱分类 A0 V[3]
U−B 色指数 –0.092[2]
B−V 色指数 –0.060[2]
天体测定
径向速度 (Rv) –15[4] km/s
自行 (μ) 赤经:+129.53[1] mas/yr
赤纬:+7.77[1] mas/yr
视差 (π) 19.92 ± 1.04[1] mas
距离 164 ± 9 ly
(50 ± 3 pc)
詳細資料
表面重力 (log g) 4.0[5]
溫度 10,500[5] K
金属量 [Fe/H] +0.30[5] dex
自轉速度 (v sin i) 80[6] km/s
其他命名
Sadalachbia, Sadachbia, 48 Aquarii, ADS 15864, BD-02°5741, FK5 842, HD 212061, HIP 110395, HR 8518, SAO 146044.[7]

宝瓶座γ,中名坟墓二[8],又名HD 212061,HR 8518,SAO 146044等,是位于宝瓶座的一颗恒星,视星等3.85,距地球约164光年。

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. 2007-11, 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. 
  2. ^ 2.0 2.1 2.2 Cousins, A. W. J., Standardization of Broadband Photometry of Equatorial Standards, South African Astronomical Observatory Circulars, 1984, 8: 59, Bibcode:1984SAAOC...8...59C. 
  3. ^ Cowley, A. et al., A study of the bright A stars. I. A catalogue of spectral classifications, Astronomical Journal, 1969-04, 74: 375–406, Bibcode:1969AJ.....74..375C, doi:10.1086/110819. 
  4. ^ Wilson, Ralph Elmer, General Catalogue of Stellar Radial Velocities, Washington: Carnegie Institution of Washington, 1953, Bibcode:1953QB901.W495...... 
  5. ^ 5.0 5.1 5.2 Baschek, Bodo; Searle, Leonard, The Chemical Composition of the Lambda Bootis Stars, Astrophysical Journal, 1969-02, 155: 537, Bibcode:1969ApJ...155..537B, doi:10.1086/149890. 
  6. ^ Royer, F.; Zorec, J.; Gómez, A. E., Rotational velocities of A-type stars. III. Velocity distributions, Astronomy and Astrophysics, 2007-02, 463 (2): 671–682, arXiv:astro-ph/0610785, Bibcode:2007A&A...463..671R, doi:10.1051/0004-6361:20065224. 
  7. ^ gam Aqr -- Star in double system, SIMBAD Astronomical Object Database (Centre de Données astronomiques de Strasbourg). 
  8. ^ 香港太空館 - 研究資源 - 亮星中英對照表, Hong Kong Space Museum. Accessed on line November 23, 2010.