For faster navigation, this Iframe is preloading the Wikiwand page for KELT-2Ab.

KELT-2Ab

KELT-2Ab
太阳系外行星 太阳系外行星列表
母恒星
母恒星 KELT-2A
星座 御夫座
赤经 (α) 06h 10m 39s
赤纬 (δ) +30° 57′ 25″
距离419 ± 15[1] ly (128.6 ± 4.7[1] pc)
光谱类型 F7V
轨道参数
半长轴 (a) 0.5504 ± 0.00086 AU
轨道离心率 (e) 0
公转周期 (P) 4.1137913 ± 0.00001 d
轨道倾角 (i) 88.56 ± 1.14°
角距 (θ) 0.278 mas
近星点时间 (T0) 2455974.60338 ± 0.00083 JD
半振幅 (K) 161.1 ± 7.8 m/s
物理性质
质量(m)1.524 ± 0.088[1] MJ
半径(r)1.290 ± 0.057[1] RJ
密度(ρ)940 ± 90[1] kg m-3
表面重力(g)22.7 m/s² (2.3 g)
发现
发现时间 2012年6月7日
发现者 KELT巡天
发现方法 凌日法
发表论文 已发表论文

KELT-2Ab是一颗环绕恒星KELT-2A太阳系外行星,距离地球约419光年,位于御夫座[1]。该行星是由千度极小望远镜巡天英语Kilodegree Extremely Little Telescope(Kilodegree Extremely Little Telescope,KELT)以凌日法发现,因此可以精确测定它的质量和体积。KELT-2Ab发现时是凌日的热木星中亮度第五高的,因此可以知道它的约束质量相当高。这些特性使KELT-2A系统是未来太空或地面望远镜进一步观测以了解行星大气层的良好目标。

母恒星KELT-2A是一个拥有共同自行联星系统KELT-2(HD 42176)的其中一颗成员星。KELT-2B是一颗橙矮星,距离主星295天文单位。

参见

[编辑]

参考资料

[编辑]

外部链接

[编辑]


{{bottomLinkPreText}} {{bottomLinkText}}
KELT-2Ab
Listen to this article

This browser is not supported by Wikiwand :(
Wikiwand requires a browser with modern capabilities in order to provide you with the best reading experience.
Please download and use one of the following browsers:

This article was just edited, click to reload
This article has been deleted on Wikipedia (Why?)

Back to homepage

Please click Add in the dialog above
Please click Allow in the top-left corner,
then click Install Now in the dialog
Please click Open in the download dialog,
then click Install
Please click the "Downloads" icon in the Safari toolbar, open the first download in the list,
then click Install
{{::$root.activation.text}}

Install Wikiwand

Install on Chrome Install on Firefox
Don't forget to rate us

Tell your friends about Wikiwand!

Gmail Facebook Twitter Link

Enjoying Wikiwand?

Tell your friends and spread the love:
Share on Gmail Share on Facebook Share on Twitter Share on Buffer

Our magic isn't perfect

You can help our automatic cover photo selection by reporting an unsuitable photo.

This photo is visually disturbing This photo is not a good choice

Thank you for helping!


Your input will affect cover photo selection, along with input from other users.

X

Get ready for Wikiwand 2.0 🎉! the new version arrives on September 1st! Don't want to wait?