Collisional family
- 碰撞家族（碰撞家族是一群共同起源的天体，它们经由撞击而有着相似组成和轨道要素。已知或疑似的碰撞家族包括小行星族、不规则卫星、地球和月球，以及矮行星如冥王星、阋神星和妊神星及其卫星）
Collisional family
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abstract:
In astronomy, a collisional family is a group of objects that are thought to have a common origin in an impact (collision). They have similar compositions, and most share similar orbital elements.
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WordNet