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HD 209458

HD 209458

HD 209458
观测资料
历元 J2000
星座 飞马座
星官
赤经 22h 03m 10.8s
赤纬 +18° 53′ 04″
视星等(V) 7.65
特性
光谱分类F8-G0 V
B−V 色指数0.59
变星类型Planetary transit
天体测定
径向速度 (Rv)-14.8 km/s
自行 (μ) 赤经:28.90 mas/yr
赤纬:-18.37 mas/yr
视差 (π)21.24 ± 1.00 mas
距离154 ly
(47.1 pc)
绝对星等 (MV)4.29
详细资料
质量1.1 M
半径1.2 R
亮度1.61 L
温度6000 K
金属量109%
自转14.4 days
年龄4-7 × 109
其他命名
BD +18°4917, SAO 107623, V376 Peg, HIP 108859.
参考数据库
SIMBAD资料

HD 209458是一个位在飞马座的恒星,与太阳类似,属于黄矮星的一种,距离地球150光年视星等8等,无法用肉眼看见。目前发现一个环绕着它的太阳系外行星HD 209458 b

参见

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HD 209458
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