白はく道どう

noun

moon's path; lunar orbit

Astronomical term referring to the apparent path of the moon across the celestial sphere, or the moon's orbit around the earth.

• 白はく道どうは黄こう道どうに対たいして約やく5度ど傾かたむいている。

  The moon's path is inclined about 5 degrees to the ecliptic.