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  1. ephemeris

    • IPA[əˈfem(ə)rəs]

    美式

    • n.
      a table or data file giving the calculated positions of a celestial object at regular intervals throughout a period;a book or set of such tables or files.
    • noun: ephemeris, plural noun: ephemerides

    • 釋義
    • 相關詞

    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
    • a book or set of such tables or files.
    • n.
      time on a scale defined by the orbital period rather than the axial rotation of the earth.

    Oxford Dictionary

    • n.
      time on a scale defined by the orbital period rather than the axial rotation of the earth.

    Oxford American Dictionary

    • 更多解釋
    • IPA[ɪˈfɛm(ə)rɪs]

    英式

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

    Oxford Dictionary