球きゅう面めん天てん文もん学がく

noun

spherical astronomy

Technical term for the branch of astronomy that deals with the positions and motions of celestial objects on the celestial sphere.

• 球きゅう面めん天てん文もん学がくは、天てん体たいの位い置ち計けい算さんに必ひつ要ような座ざ標ひょう系けいを扱あつかう。

  Spherical astronomy deals with the coordinate systems needed for calculating celestial positions.