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HAT-P-11

HAT-P-11

观测资料
历元 J2000.0
星座 天鹅座
星官
赤经 19h 50m 50.2469s
赤纬 +48° 04′ 51.085″
视星等(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)
详细资料
质量0.81 +0.03 -0.02 M
半径0.75 ± .02 R
亮度0.26 L
温度4780 ±50 K
金属量0.31 ±0.05
年龄65亿
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:

序号
(依距离排序)
质量
(MJ)
轨道周期
()
半长径
(天文单位)
离心率
b 0.081 ±0.009 4.8878162 ±7.1e-06 0.053 +0.0002 -0.0008 0.198 ±0.046

相关条目

[编辑]

参考资料

[编辑]
  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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HAT-P-11
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