Definition of celestial longitude in English:

celestial longitude

Line breaks: ce¦les|tial lon¦gi|tude

noun

Astronomy
  • The angular distance of a point east of the First Point of Aries, measured along the ecliptic. Compare with right ascension.
    More example sentences
    • But in fact, from day to day the earthbound observer does see the midday Sun at a different point along the same celestial longitude - up or down relative to the horizon.
    • By the time he returned home in January 1678, he had recorded the celestial longitudes and latitudes of 341 stars and observed a transit of Mercury across the Sun's disk.
    • Technically, a conjunction describes a precise alignment of heavenly bodies that happen to have the same celestial longitude - that is, they appear to line up in the sky, one directly above the other.

More definitions of celestial longitude

Definition of celestial longitude in:

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day kerf
Pronunciation: kəːf
noun
a slit made by cutting with a saw