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格利泽433

Gliese 433

高温超级地球格利泽433b
观测资料
历元 J2000.0
星座 长蛇座
星官
赤经 11h 35m 26.9485s
赤纬 -32° 32′ 23.900″
视星等(V) 9.79
特性
光谱分类M1.5V
视星等 (U)12.508
视星等 (B)11.28
视星等 (R)8.821
视星等 (I)7.664
视星等 (J)6.471
视星等 (H)5.856
视星等 (K)5.623
U−B 色指数1.23
B−V 色指数1.49
V−R 色指数0.97
R−I 色指数1.157
天体测定
自行 (μ) 赤经: –69.85 mas/yr
赤纬: –852.54 mas/yr
视差 (π)110.171 ± 1.81 mas
距离29.6 ± 0.5 ly
(9.1 ± 0.1 pc)
绝对星等 (MV)10.01
详细资料
质量0.48[1] M
半径0.48 ± 0.01 R
表面重力 (log g)4.42
亮度0.033 ± 0.002 L
温度3550 ± 100 K
其他命名
HIP 56528, GJ 433, CD-31 9113, LHS 2429, LTT 4290, NLTT 27914, SAO 202602
参考数据库
SIMBAD资料
系外行星数据库英语Exoplanet Archive资料
系外行星百科资料
资料来源:
依巴谷星表CCDM (2002)、亮星星表

格利泽433Gliese 433)是一个位于长蛇座的暗淡红矮星,距离地球约29.5光年。目前已发现有一颗低质量系外行星以极近的距离环绕它。

行星系统

格利泽433旁的行星格利泽433b是一个质量至少是地球6倍的超级地球,公转周期大约7日,其半长轴大约是0.056天文单位。该行星于2009年10月在记者会中公布发现,但尚未发表相关论文[2]

Gliese 433的行星系
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 >6.0 M 0.054 7.0 0.08
c 44.52 M 3.6 3693 0.17

参考资料

  1. ^ Zechmeister, M.; Kürster, M.; Endl, M. The M dwarf planet search programme at the ESO VLT + UVES. A search for terrestrial planets in the habitable zone of M dwarfs. August 6, 2009. arXiv:0908.0944可免费查阅. 
  2. ^ 32 New Exoplanets Found. ESO News. ESO. [15 February 2012]. (原始内容存档于2012-09-15). 


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格利泽433
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