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东上将增一

室女座70

Celestia软件制作的室女座70图片
观测资料
历元 J2000.0
星座 室女座
星官
赤经 13h 28m 25.81s [1]
赤纬 +13° 46′ 43.6″ [1]
视星等(V) +5.00
特性
光谱分类G2.5Va
U−B 色指数0.26
B−V 色指数0.71
V−R 色指数0.39
R−I 色指数0.36
变星类型
天体测定
径向速度 (Rv)5 km/s
自行 (μ) 赤经:−236.02 ± 0.24 [1] mas/yr
赤纬:−575.73 ± 0.19 [1] mas/yr
视差 (π)55.60 ± 0.17[1] mas
距离58.7 ± 0.2 ly
(17.99 ± 0.05 pc)
绝对星等 (MV)+3.70 ± 0.01 [2]
详细资料
质量1.12[3] M
半径1.858 ± 0.124 [4] R
表面重力 (log g)3.58
亮度3.06 L
温度5770 K
金属量 [Fe/H]−0.03 dex
自转unknown
年龄8.2 × 109
其他命名
HD 117176, HIP 65721, HR 5072, BD+14°2621, Gl 512.1, WDS 13284+1347A, and SAO 100582.
参考数据库
SIMBAD资料
系外行星数据库英语Exoplanet Archive资料
ARICNS资料
系外行星百科资料

室女座70,中文名东上将增一,是位于室女座的一颗类太阳主序星,该恒星于1996年被发现有行星,其质量约为木星的7.44倍,距离恒星约为0.48天文单位

该恒星初步计算与太阳距离为29光年,其行星的表面温度约为摄氏80度,因此被认为可能有生命存在。但最近的计算指出它与地球的距离比预期的远,因此其行星各数值需要作出重大修改。

行星系

东上将增一的行星系[5][6]
成员
(依恒星距离)
质量 半长轴
(AU)
轨道周期
()
离心率 倾角 半径
b >7.49 ± 0.61 MJ 0.484 ± 0.028 116.6884 ± 0.0044 0.4007 ± 0.0035
尘埃盘 >3.4 AU

参见

参考资料

  1. ^ 1.0 1.1 1.2 1.3 1.4 van Leeuwen, F. HIP 65721. Hipparcos, the New Reduction. 2007 [2009-12-08]. (原始内容存档于2012-02-16). 
  2. ^ Holmberg; et al. HD 117176. Geneva-Copenhagen Survey of Solar neighbourhood III. 2009 [2010-02-02]. (原始内容存档于2012-02-22). 
  3. ^ Shaya, Ed J.; Olling, Rob P., Very Wide Binaries and Other Comoving Stellar Companions: A Bayesian Analysis of the Hipparcos Catalogue, The Astrophysical Journal Supplement, January 2011, 192 (1): 2, Bibcode:2011ApJS..192....2S, doi:10.1088/0067-0049/192/1/2 
  4. ^ Gerard T. van Belle and Kaspar von Braun. Directly Determined Linear Radii and Effective Temperatures of Exoplanet Host Stars (abstract). The Astrophysical Journal. 2009, 694 (2): 1085–1098. Bibcode:2009ApJ...694.1085V. doi:10.1088/0004-637X/694/2/1085.  (web Preprint页面存档备份,存于互联网档案馆))
  5. ^ Trilling; Bryden, G.; Beichman, C. A.; Rieke, G. H.; Su, K. Y. L.; Stansberry, J. A.; Blaylock, M.; Stapelfeldt, K. R.; Beeman, J. W.; et al. Debris Disks around Sun-like Stars. The Astrophysical Journal. 2008, 674 (2): 1086–1105. Bibcode:2008ApJ...674.1086T. doi:10.1086/525514. 
  6. ^ Butler; Wright, J. T.; Marcy, G. W.; Fischer, D. A.; Vogt, S. S.; Tinney, C. G.; Jones, H. R. A.; Carter, B. D.; Johnson, J. A.; et al. Catalog of Nearby Exoplanets. The Astrophysical Journal. 2006, 646 (1): 505–522 [2012-01-30]. Bibcode:2006ApJ...646..505B. arXiv:astro-ph/0607493可免费查阅. doi:10.1086/504701. (原始内容存档于2009-05-02). 


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东上将增一
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