periselenium

名词 n.
中文释义

英文释义

名词 n.
  1. The point of a body's elliptical orbit about the moon's centre of mass where the distance between the body and the centre of mass is at its minimum. uncountable
    — Hence, the Earth gravity allows the decrease of the particle energy from zero to a negative value and its capture by the moon to an elliptical orbit, e.g., with a periselenium of ~2,000 km and a high aposelenium of ~70,000h km.

词汇关系

反义词
aposelenium

词源

From peri- + seleno- + -ium, Latin form of -ion.
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