at perigee
The Moon is at perigee tonight, appearing larger than usual.
今晚月球位于近地点，看起来比平时更大。
卫星轨道上离地球最近的点
近地点；近地点；卫星轨道上离地球最近的点；轨道近点；轨道最近点
the point in its orbit where a satellite is nearest to the Earth
用于描述卫星轨道的术语
近地点
The point, in an orbit about the Earth, that is closest to the Earth: the periapsis of an Earth orbiter.
近地点；卫星轨道上离地球最近的点
periapsis in Earth orbit; the point in its orbit where a satellite is nearest to the Earth
轨道近点
The point, in an orbit about any planet, that is closest to the planet: the periapsis of any satellite.
轨道最近点
The point, in any trajectory of an object in space, where it is closest to the Earth.
The satellite moves fastest when it reaches perigee.
卫星到达近地点时运动最快。
用法提示：此句中 perigee 作为名词，表示卫星轨道上离地球最近的点。
Engineers calculated the perigee of the new spacecraft.
工程师们计算了新航天器的近地点。
用法提示：perigee 在此句中作宾语，指轨道近地点位置。
The difference between apogee and perigee affects orbital stability.
远地点和近地点的差异影响轨道稳定性。
用法提示：perigee 与 apogee 对举，作为名词表示轨道参数。
The Moon is at perigee tonight, appearing larger than usual.
今晚月球位于近地点，看起来比平时更大。
The perigee of the satellite's orbit is approximately 200 kilometers above Earth.
该卫星轨道的近地点距地球约200公里。
The spacecraft will be near perigee at 14:00 UTC.
该航天器将于世界协调时14:00接近近地点。
The communications satellite reaches perigee every 90 minutes.
这颗通信卫星每90分钟到达一次近地点。
grammar · medium
易错句子The moon is at the perigee tonight.
正确表达The moon is at perigee tonight.
在专业天文学语境中，'perigee' 作为轨道点名称，通常不加冠词。使用 'at perigee' 是标准用法。
grammar · medium
易错句子The satellite reached its perigee point.
正确表达The satellite reached its perigee.
'perigee' 本身已指代 '近地点'，添加 'point' 语义重复。去掉 'point' 更简洁自然。
近地点指离地球最近的点，而远地点指离地球最远的点，方向相反易混淆。
近地点是地球卫星离地球最近的点，近日点是行星或彗星离太阳最近的点，适用对象不同。
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