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What does ephemeris mean?

Looking for the meaning or definition of the word ephemeris? Here's what it means.

Noun
  1. (obsolete, singular or plural) A journal or diary.
  2. (astronomy) A table giving the apparent position of celestial bodies throughout the year; normally given as right ascension and declination
  3. Software that calculates the apparent position of celestial bodies.
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Allows ephemeris data to be automatically updated onto your phone when the data has expired.
The results of the solution of the least-squares equation are used to update the ephemeris and attitude values of each orbit path.
Note that downloaded Demo version contains abbreviated help files, atlas, and ephemeris.
Take in hand, then, the ephemeris for the year of your birth and read this chapter with it in view.
The GPS position solution can be improved by using a better satellite ephemeris.
Newcomb's tables were used to form a solar ephemeris, or a table that gives the Sun's coordinates for successive values of Ephemeris Time.

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