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CoRoT-7d is an unconfirmed exoplanet that orbits around CoRoT-7, an orange-yellow star younger and smaller than the Sun. This exoplanet is 490 light-years away from the solar system in the constellation Monoceros (the Unicorn). A planetary system of two or three planets was detected around this star: * CoRoT-7b * CoRoT-7c * CoRoT-7d This exoplanet was discovered by A. P. Hatzes and al in 2010 by radial speeds. The nature of CoRoT-7d is not definitively confirmed. == Characteristics == CoRoT-7d's mass is 0.052 times Jupiter, but its volume mass and diameter are unknown. One year on CoRoT-7d is equivalent to 9.021 days on Earth. 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「CoRoT-7d」の詳細全文を読む スポンサード リンク
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