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K2-22b
K2-22b also known as EPIC 201637175 b is an exoplanet whizzing around K2-22 a red dwarf, every 9.145872 hours 734 ly away.〔 It has an upper mass of 445 Me and a radius of 2.5 Re The planet was not detected in the K2 photometry. K2 photometry reveals the presence of an anomalous light curve consistent with evaporation of dust from the planet. This dust forms a tail both ahead and behind the planet, similar to some comets in the Solar system. The evaporation of this dust requires a low surface gravity from the host planet, implying it is a low mass, "Mars, Mercury, or even lunar sized bodies
with surface gravities of 1/6 to 1/3 that of Earth are to be preferred."〔
==References==
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「K2-22b」の詳細全文を読む
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