The first lunar to ground transfer incident of the Chang'e-5 orbiter and return spacecraft combination

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北京时间12月12日9时54分，嫦娥五号轨道器和返回器组合体经历了约6天的环月等待，实施了第一次月地转移入射，从近圆形轨道变为近月点高度约200公里的椭圆轨道。月地转移入射的主要目的是通过月球轨道上的轨道机动，使轨道器和返回器组合体进入月地转移轨道。

后续，携带月球样品的轨道器和返回器组合体将择机实施第二次月地转移入射，从而摆脱月球引力，进入月地转移轨道返回地球。

嫦娥五号探测器星下点轨迹

嫦娥五号探测器第一次月地转移入射示意图

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