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格利泽86b

格利泽86b
格利泽86b的艺术想象图
发现
發現者迈克尔·迈耶等人
發現日期1998年11月24日
多普勒光谱法
軌道參數
半長軸0.113天文单位[1]
離心率0.0416 ± 0.0072[1]
軌道週期15.76491 ± 0.00039地球日[1]
近心點經度269 ± 16°[1]
近心點時間2451903.36 ± 0.59儒略日[1]

格利泽86b(也被称为格利泽86Ab,以区别于该系统中的恒星伴星格利泽86B)是一颗位于波江座、距离地球约36光年的系外行星,其母星为K型矮星格利泽86A。1998年11月,法国科学家发现了该行星。该行星的轨道十分接近其母星,轨道周期为15.77地球日。

依巴谷卫星所作的初步天体测量表明该行星的轨道倾角达到了164°,由此推算其质量为15MJ,在这种质量级别上,它更可能是一颗褐矮星。不过,后来的进一步分析发现依巴谷卫星的观测数据存在较大误差,不足以精确恒星伴星的轨道,故至今还不知道该行星的轨道倾角和真实质量。

利用视向速度法观测发现,在去除格利泽86b的影响之后,格利泽86仍然表现出一种线性运动的趋势,这可能与其白矮星伴星的轨道运动有关。

参考文献

[编辑]
  1. ^ 1.0 1.1 1.2 1.3 1.4 Butler, R.; et al. Planets Table. Catalog of Nearby Exoplanets. 2007 [2007-08-02]. (原始内容存档于2019-03-05). 

外部链接

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格利泽86b
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