位い置ち天てん文もん学がく

noun

position astronomy; positional astronomy

Technical term in astronomy dealing with the precise measurement and prediction of the positions and motions of celestial objects.

• 位い置ち天てん文もん学がくは、星ほしの正せい確かくな位い置ちを測そく定ていする学がく問もんです。

  Position astronomy is the study of measuring the precise positions of stars.