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HAT-P-4

HAT-P-4
观测资料
历元 J2000
星座 牧夫座
星官
赤经 15h 19m 57.9275s[1]
赤纬 +36° 13′ 46.785″[1]
视星等(V) 11.0[1]
特性
光谱分类G[1]
B−V 色指数0.771
天体测定
自行 (μ) 赤经:-14.1 ± 3.7[1] mas/yr
赤纬:-20.1 ± 2.1[1] mas/yr
视差 (π)0.2 mas
距离1010.6 ± 97.8 ly
(310 ± 30 pc)
绝对星等 (MV)11.7
详细资料
质量~ 1.26 M
半径1.59 ± 0.07 R
表面重力 (log g)~13.92 g
亮度0.41 L
温度5860 ± 80 K
金属量24 ± 8 %
年龄~4.2 G
赤道[ g ] ~136.5 m/s2
其他命名
BD+36°2593, SAO 64638, AG+36° 1339, GSC 02569-01599, PPM 78511, TYC 2569-1599-1
参考数据库
SIMBAD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

HAT-P-4是一颗位于牧夫座中的黄矮星[1]。它的编号还有BD+36°2593

行星系

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这颗恒星拥有一颗以凌日法发现的太阳系外行星HAT-P-4b[2]

HAT-P-4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 0.68 ± 0.04 MJ 0.0446 ± 0.0012 3.056536 ± 0.000057 0

参见

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参考资料

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  1. ^ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 SIMBAD query result: NAME HAT-P-4 -- Star. Centre de Données astronomiques de Strasbourg. [2009-04-24]. (原始内容存档于2018-09-27). 
  2. ^ Kovács; Bakos, G. Á.; Torres, G.; Sozzetti, A.; Latham, D. W.; Noyes, R. W.; Butler, R. P.; Marcy, G. W.; Fischer, D. A.; et al. HAT-P-4b: A Metal-rich Low-Density Transiting Hot Jupiter. The Astrophysical Journal Letters. 2007, 670 (1): L41–L44. Bibcode:2007ApJ...670L..41K. doi:10.1086/524058. 

外部链接

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HAT-P-4
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