Simulation work published in 2005 by Robin Canup suggested that Charon could have been formed by a collision around 4.5 billion years ago, much like Earth and the Moon.
羅賓·坎二模擬的結果在2005年出版，提出卡戎是在約45億年前的大碰撞中形成的，非常像地球和月球的狀況。