尾宿四

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尾宿四
Scorpius constellation map.svg
Red circle.svg



尾宿四的位置(红圈处)
觀測資料
曆元 J2000
星座 天蝎座
星官
赤經 17h 12m 09.19565s[1]
赤緯 –43° 14′ 21.0905″[1]
視星等(V) 3.33[2]
特性
光谱分类F5 IV[3]
U−B 色指数+0.09[2]
B−V 色指数+0.41[2]
天体测定
径向速度 (Rv)–27.0[4] km/s
自行 (μ) 赤经:+24.47[1] mas/yr
赤纬:–288.55[1] mas/yr
视差 (π)44.39 ± 0.16[1] mas
距离73.5 ± 0.3 ly
(22.53 ± 0.08 pc)
绝对星等 (MV)+1.58[5]
詳細資料
質量1.75[6] M
表面重力 (log g)3.10[3]
亮度17.7[6] L
溫度6,519[3] K
金属量 [Fe/H]0.05[5] dex
自轉速度 (v sin i)150.0[6] km/s
年齡1.1[5] Gyr
其他命名
η Sco, CD-43 11485, FK5 638, GJ 657, HD 155203, HIP 84143, HR 6380, SAO 227707.[7]
參考資料庫
SIMBAD data

尾宿四天蝎座η)是一颗位于天蝎座的恒星,其视星等为3.33[2]

参考文献[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, 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 Bok, B. J.; Bok, P. F.; Miller, E. W., Photometric standards for the southern hemisphere. II, Astronomical Journal, November 1972, 77: 733, Bibcode:1972AJ.....77..733B, doi:10.1086/111346 
  3. ^ 3.0 3.1 3.2 Gray, R. O.; 等, Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 pc-The Southern Sample, The Astronomical Journal, July 2006, 132 (1): 161–170, Bibcode:2006AJ....132..161G, arXiv:astro-ph/0603770, doi:10.1086/504637 
  4. ^ Evans, D. S., Batten, Alan Henry; Heard, John Frederick, 编, The Revision of the General Catalogue of Radial Velocities, University of Toronto: International Astronomical Union, June 20–24, 1966 [2009-09-10] 
  5. ^ 5.0 5.1 5.2 Holmberg, J.; Nordstrom, B.; Andersen, J. The Geneva-Copenhagen survey of the solar neighbourhood. III. Improved distances, ages, and kinematics. Astronomy and Astrophysics. July 2009, 501 (3): 941–947. Bibcode:2009A&A...501..941H. arXiv:0811.3982. doi:10.1051/0004-6361/200811191. 
  6. ^ 6.0 6.1 6.2 Mallik, Sushma V.; Parthasarathy, M.; Pati, A. K., Lithium and rotation in F and G dwarfs and subgiants, Astronomy and Astrophysics, October 2003, 409: 251–261, Bibcode:2003A&A...409..251M, doi:10.1051/0004-6361:20031084 
  7. ^ LTT 6848 -- High proper-motion Star, SIMBAD (Centre de Données astronomiques de Strasbourg), [2012-02-10]