墳墓二

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。

宝瓶座γ

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
徑向速度 (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]

参考资料

1. 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. 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, April 1969, 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. Baschek, Bodo; Searle, Leonard, The Chemical Composition of the Lambda Bootis Stars, Astrophysical Journal, February 1969, 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, February 2007, 463 (2): 671–682, Bibcode:2007A&A...463..671R, arXiv:astro-ph/0610785 , doi:10.1051/0004-6361:20065224.
7. gam Aqr -- Star in double system, SIMBAD Astronomical Object Database (Centre de Données astronomiques de Strasbourg), [2012-08-20], （原始内容存档于2020-01-11）.
8. 香港太空館 - 研究資源 - 亮星中英對照表 互联网档案馆的存檔，存档日期2008-10-25., Hong Kong Space Museum. Accessed on line November 23, 2010.