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HD 114762 b

HD 114762 b[1]
太阳系外行星 太阳系外行星列表
母恒星
母恒星 HD 114762
星座 后发座
赤经 (α) 13h 12m 19.7427s
赤纬 (δ) +17° 31′ 01.643″
距离132.3 ly (40.6 pc)
光谱类型 F9V
轨道参数
半长轴 (a) 0.363 ± 0.021 AU
轨道离心率 (e) 0.3359 ± 0.0091
公转周期 (P) 83.8881 ± 0.0086 d (0.229669 y)
近星点时间 (T0) 2,449,805.36 ± 0.34 JD
半振幅 (K) 615.2 ± 6.7 m/s
物理性质
最小质量(m sin i)11.02 ± 0.96 MJ
发现
发现时间 1989年
发现者 Latham et al.
发现方法 多普勒光谱学
发表论文 Confirmed
数据库参考
太阳系外行星
百科全书
data
SIMBADdata

HD 114762 b是一个位于后发座,距离地球约132光年的候选系外行星棕矮星

概要

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HD 114762 b环绕黄-白矮星HD 114762,但直到1989年才由大卫·莱瑟姆德语David Latham等人以光学方式发现[2] 直到2006年仍缺乏证据显示它是否为气体巨行星,它的质量下限可能是11倍木星质量,质量上限则是木星的145倍,因此它可能是行星或棕矮星红矮星。如果它是系外行星的话,它将是首颗被侦测到的系外行星,虽然目前仍未确定。而它的发现甚至早于1992年发现的环绕脉冲星PSR B1257+12脉冲星行星和1995年在恒星飞马座51(黄矮星)旁发现首颗环绕主序星的系外行星[3][4]。它的轨道周期约83.89日,轨道离心率是0.34。

参见

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参考资料

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  1. ^ 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 [2012-01-27]. 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). 
  2. ^ Latham, David W.; et al. The unseen companion of HD114762 - A probable brown dwarf. Nature. 1989, 339 (6219): 38–40 [2012-01-27]. Bibcode:1989Natur.339...38L. doi:10.1038/339038a0. (原始内容存档于2016-04-21). 
  3. ^ Alan Hale. On the nature of the companion to HD 114762. Astronomical Society of the Pacific. 1995, 107: 22–26. Bibcode:1995PASP..107...22H. doi:10.1086/133511. 
  4. ^ Marcy; Butler, R. Paul; Vogt, Steven S.; Fischer, Debra; Liu, Michael C.; et al. Two New Candidate Planets in Eccentric Orbits. The Astrophysical Journal. 1999, 520 (1): 239–247 [2012-01-27]. Bibcode:1999ApJ...520..239M. arXiv:astro-ph/9904275可免费查阅. doi:10.1086/307451. (原始内容存档于2020-06-09). 


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HD 114762 b
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