aphelion

名词 aphelion:

1. apoapsis in solar orbit; the point in the orbit of a planet or comet that is at the greatest distance from the sun

a.phe.li.on

n.（名词）
【复数】 a.phe.li.a[-lô-…]
The point on the orbit of a celestial body that is farthest from the sun.
远日点：在天体运行轨道上距离太阳最远的点

来源：
From New Latin aphôlium
源自 现代拉丁语 aphôlium
Greek apo- [apo-]
希腊语 apo- [前缀，表示.远离.，.分离.]
Greek hôlios [sun] * see s3wel-
希腊语 hôlios [太阳] *参见 s3wel-