近きん点てん離り角かく

noun

anomaly

In astronomy, the angular distance of a celestial body from its periapsis, measured along its orbit. A technical term used in orbital mechanics.

• 近きん点てん離り角かくは、軌き道どう要よう素その一ひとつとして用もちいられる。

  The anomaly is used as one of the orbital elements.