恒星时[Sidereal Time] - 达人(其实～我是卧底，来自外星)

2005/02/13 | 恒星时[Sidereal Time]
类别(¤〖天文〗) | 评论(0) | 阅读(33) | 发表于 12:00: Time measured relative to the "fixed stars" instead of the Sun . Sidereal time is useful because the offset of sidereal time from the right ascension of a celestial object, known as the hour angle,gives the time before or after transit. The most useful form of sidereal time is local sidereal time,which gives the right ascension of a transiting celestial object at a given location.; 0