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HD 159868

HD 159868
观测资料
历元 (({epoch))}
星座 天蝎座
星官 (({星官))}
赤经 17h 38m 59.526s
赤纬 -43° 08′ 43.85″
视星等(V) +7.24
距离 171.93 光年
(52.71 pc)
光谱分类 (({spectral))}
其他命名
CD-43º11901, GC 23898, GCRV 67207, GJ 4014, HIP 86375, SAO 228234

HD 159868是一个距离地球约172光年的黄矮星,位于天蝎座。他的光度大约是太阳的3.05倍,金属量和太阳相当。2007年宣布在该恒星旁发现一颗系外行星[1]

行星系统

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2007年,天文学家西蒙·奥图(Simon J. O'Toole)宣布发现系外行星 HD 159868 b,它可能是气体巨行星。该行星的轨道离心率很大,与母恒星平均距离2天文单位,实际距离在0.62到3.38天文单位之间。而该恒星的轨道周期大部分时间都在适居带范围内。

HD 159868的行星系[1]
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 >1.7 ± 0.3 MJ 2 ± 0.3 986 ± 9 0.69 ± 0.02

参见

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参考资料

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  1. ^ 1.0 1.1 O'Toole; et al. New Planets around Three G Dwarfs. The Astrophysical Journal. 2007, 660 (2): 1636–1641 [2012-05-18]. Bibcode:2007ApJ...660.1636O. arXiv:astro-ph/0702213可免费查阅. doi:10.1086/513563. (原始内容存档于2020-01-03). 

外部链接

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HD 159868
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