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Kepler-453b
Kepler-453b is a circumbinary exoplanet in the Binary-star system Kepler-453. It orbits the binary in the Habitable zone every 240.5 days. It is also has a remarkable low density of 0.004619 g/cm3, this is due to its extremely low mass of 0.2 Earth Masses.〔 Although its mass is only 20% that of the Earth its Radius is over 6 times larger than Earth's which is the root cause of the low density. ==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「Kepler-453b」の詳細全文を読む
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