DictionarydeclinationCelestial position
noun

declination

Angular distance north or south of the celestial equator.

The chart lists each star's declination in degrees north or south.

Etymology

The Latin root concerns inclination away from a reference direction. Astronomy applies it to an object’s angular position north or south of the celestial equator.

More examples

  • A star on the celestial equator has a declination of zero degrees.
  • The astronomer compares the declinations of two nearby stars.
  • The sun's declination changes as Earth moves around it.

Forms

declination · declinations