Celestial equator
- The celestial equator is the great circle of the imaginary celestial sphere on the same plane as the equator of Earth.
例子celestial equator中的一个句子
C. Biot to the date II II B.C. Measured from the winter solstice of that epoch, they corresponded, in conformity with the Chinese method of observation by intervals of what we now call righ t ascension, to equal portions of the celestial equator.
In astronomy the mean sun is a fictitious sun which moves uniformly in the celestial equator and has its right ascension always equal to the sun's mean longitude.
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