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  1. Oxford Dictionary

    ephemeris

    • IPA[ɪˈfɛm(ə)rɪs]

    英式

    • n.
      a table or data file giving the calculated positions of a celestial object at regular intervals throughout a period

    • noun: ephemeris, plural noun: ephemerides

    • 釋義

    名詞

    • 1. a table or data file giving the calculated positions of a celestial object at regular intervals throughout a period you can compute an ephemeris for any comet that is discovered and plot an accurate finder chart