Description: 在天文学中，“阿波罗”有两种含义。第一个是指阿波罗计划，这一计划将人类首次送上了月球。这些任务大多由土星五号火箭提供动力。总共发射了14次带编号的任务（阿波罗4至17号），其中11次是载人任务，9次前往月球，6次成功登月，另有3次绕月飞行。

另外，“阿波罗”还指一组近地小行星，因小行星(1862)阿波罗而得名。这组小行星的特点是半长轴大于地日距离（即1个天文单位），近日点距离小于1个天文单位。这意味着在轨道运行过程中，阿波罗小行星从地球轨道内侧运行到外侧，尽管它们很少接近地球本身。

Related Terms:

• 天文单位
• Moon
• Near-Earth Objects
• Perihelion
• Rocket
• Spacecraft
• 半长轴

Term and definition status: The original definition of this term in English have been approved by a research astronomer and a teacher
The translation of this term and its definition is still awaiting approval

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