HAT-P-11

HAT-P-11

觀測資料
曆元 J2000.0
星座 天鹅座
星官
赤經 19h 50m 50.2469s
赤緯 +48° 04′ 51.085″
視星等（V） +9.473
特性
光谱分类K5
U−B 色指数?
B−V 色指数1.19
V−R 色指数?
R−I 色指数?
天体测定
自行 (μ) 赤经：126.44 mas/yr
赤纬：230.98 mas/yr
距离123 ±4.2 ly
(38 ±1.3 pc)
詳細資料
質量0.81 +0.03 -0.02 M☉
半徑0.75 ± .02 R☉
亮度0.26 L☉
溫度4780 ±50 K
金屬量0.31 ±0.05
年齡65亿 年
其他命名
GSC 03561-02092
HIP 97657
NLTT 48335
USNO-B1.0 1380-00392296

HAT-P-11，又称GSC 03561-02092，是一颗位于天鹅座的橙矮星，距离地球123光年，它因为其自行速度快而出名。视星等为9.5，裸眼不能看到它，但通过望远镜可以见到。HAT-P-11的年龄是65亿年[1]。

2009年，匈牙利自动望远镜网络计划发现这颗恒星有一颗行星（HAT-P-11b）。这个行星系统的具体参数如下：

HAT-P-11的行星系
成員
(依恆星距離) 		质量 半長軸
(AU) 		轨道周期
(天) 		離心率 傾角 半径
b 0.081 ±0.009 M⊕ 0.053 +0.0002 -0.0008 4.8878162 ±7.1e-06 0.198 ±0.046 — —

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参考资料

  1. ^ SIMBAD query result: G 208-41 -- High proper-motion Star. Centre de Données astronomiques de Strasbourg. [2010-02-19]. （原始内容存档于2019-06-09）. 


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