2005/07/03 | 冲[Opposition]
类别(¤〖天文〗) | 评论(0) | 阅读(19) | 发表于 20:14
The positioning of two celestial bodies relative to a third (usually the Sun, Earth, and a third celestial body) such that they are 180° apart in right ascension. Note that the bodies need not actually lie on a straight line since they may lie at different declinations.
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