任务档案 · MISSION
Pioneer 4
美国国家航空航天局 (NASA) · Juno II · Launch Complex 5
成功
任务成功
任务简介
先锋4号是一个自旋稳定航天器，原计划作为月球探测器，并成功以58983公里的高度飞越月球。不幸的是，它距离月球不够近，未能触发其光电传感器。
原文
Pioneer 4 was a spin-stabilized spacecraft intended as a lunar probe and successfully performed a fly by of the moon at a height of 58983km. Unfortunately it didn't come close enough to trigger its photoelectric sensor.
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