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HD 168443

HD 168443
观测资料
历元 J2000
星座 巨蛇座
星官 (({星官))}
赤经 18h 20m 03.9316s
赤纬 –09° 35′ 44.601″
视星等(V) 6.92
距离 123.5 光年
(37.88 pc)
光谱分类 G5IV
其他命名
BD-09°4692, GJ 4052,
HIP 89844, LTT 7289, SAO 142228

HD 168443是一颗位于巨蛇座光谱类型 G5IV 的次巨星,距离地球约123光年。该恒星的质量与太阳大致相等,并且在旁边已发现一颗行星和一颗棕矮星。棕矮星环绕母恒星的距离是行星的30倍[1][2]

HD 168443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 >7.2 ± 0.4 MJ 0.29 58.116 ± 0.001 0.529 ± 0.02
c 34 ± 12 MJ 2.87 1739.5 ± 3.8 0.228 ± 0.005

参见

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参考资料

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  1. ^ Marcy; Butler, R. Paul; Vogt, Steven S.; Liu, Michael C.; Laughlin, Gregory; Apps, Kevin; Graham, J. R.; Lloyd, J.; Luhman, Kevin L.; et al. Two Substellar Companions Orbiting HD 168443. The Astrophysical Journal. 2001, 555 (1): 418–425. Bibcode:2001ApJ...555..418M. doi:10.1086/321445. 
  2. ^ Reffert, S., Quirrenbach, A. Hipparcos astrometric orbits for two brown dwarf companions: HD 38529 and HD 168443 (PDF). Astronomy and Astrophysics. 2006, 449 (2): 699–702 [2021-02-06]. Bibcode:2006A&A...449..699R. doi:10.1051/0004-6361:20054611. (原始内容存档 (PDF)于2019-10-17). 

外部链接

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HD 168443
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