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celestial equator

/səˈlɛstiəl ɪˈkweɪtər/

翻译: 天球上与地球赤道位于同一平面的假想大圆,将天球分为北天半球和南天半球。

1 个条目

phrase

/səˈlɛstiəl ɪˈkweɪtər/C1formalscientific
  • zh天球上与地球赤道位于同一平面的假想大圆,将天球分为北天半球和南天半球。

An imaginary great circle on the celestial sphere that lies in the same plane as Earth's equator, dividing the sky into northern and southern hemispheres.

  1. Astronomical reference lineC1formal

    An imaginary great circle on the celestial sphere that lies directly above the Earth's equator, dividing the sky into northern and southern hemispheres.

    zh天球赤道

    • The celestial equator is used as a reference point for mapping stars and planets.
    • Astronomers measure declination in degrees north or south of the celestial equator.
    • The Sun crosses the celestial equator during the equinoxes.