年ねん周しゅう視し差さ

noun

annual parallax; stellar parallax

Astronomical term for the apparent shift of a star's position due to Earth's orbit around the Sun. Used in distance measurement.

• 年ねん周しゅう視し差さを使つかって恒こう星せいまでの距きょ離りを計けい算さんする。

  Calculate the distance to the star using annual parallax.