Definition of ephemeris in English:

ephemeris

nounPlural ephemerides ɪˈfɛm(ə)rɪsɪˈfiːm(ə)rɪsəˈfɛm(ə)rəs

Astronomy Astrology

A table or data file giving the calculated positions of a celestial object at regular intervals throughout a period.
〔天文，占星〕星历表
you can compute an ephemeris for any comet that is discovered and plot an accurate finder chart
Example sentencesExamples
- It's not commonly realised that there is a strong notional element in some of the times so confidently listed in the ephemeris, as will become clear if you compare the times given for aspects of the major planets in different ephemerides.
- Global networks of tracking stations produce the observations that make generation of the precise ephemerides possible.
- The GPS position solution can be improved by using a better satellite ephemeris.
- Timing an occultation to a fraction of a second allows the observed location to be referenced against the predicted position from the computed ephemeris, perhaps leading to an update.
- The navigation message contains the satellite ephemeris, which is a numerical model of the satellite's orbit.

Origin

Early 16th century: from Latin, from Greek ephēmeros 'lasting only a day'.

Definition of ephemeris in US English:

ephemeris

nounəˈfem(ə)rəsəˈfɛm(ə)rəs

Astrology Astronomy

1A table or data file giving the calculated positions of a celestial object at regular intervals throughout a period.
〔天文，占星〕星历表
you can compute an ephemeris for any comet that is discovered and plot an accurate finder chart
Example sentencesExamples
- It's not commonly realised that there is a strong notional element in some of the times so confidently listed in the ephemeris, as will become clear if you compare the times given for aspects of the major planets in different ephemerides.
- The navigation message contains the satellite ephemeris, which is a numerical model of the satellite's orbit.
- The GPS position solution can be improved by using a better satellite ephemeris.
- Global networks of tracking stations produce the observations that make generation of the precise ephemerides possible.
- Timing an occultation to a fraction of a second allows the observed location to be referenced against the predicted position from the computed ephemeris, perhaps leading to an update.
1. 1.1 A book or set of such tables or files.
  （带星历表的）历书
  Example sentencesExamples
  The first of his long-running annual ephemerides appeared in 1655 and the following year he published An Emendation of Hartgil's Astronomical Tables.
  Alternatively, you can use an ephemeris to look up the daily positions, but these are usually more expensive and not really worth buying unless you are going to be tracking other astrological things too.
  He purchased an ephemeris.

Origin

Early 16th century: from Latin, from Greek ephēmeros ‘lasting only a day’.

词汇	ephemeris
释义	Definition of ephemeris in English: ephemeris nounPlural ephemerides ɪˈfɛm(ə)rɪsɪˈfiːm(ə)rɪsəˈfɛm(ə)rəs Astronomy Astrology A table or data file giving the calculated positions of a celestial object at regular intervals throughout a period. 〔天文，占星〕星历表 you can compute an ephemeris for any comet that is discovered and plot an accurate finder chart Example sentencesExamples It's not commonly realised that there is a strong notional element in some of the times so confidently listed in the ephemeris, as will become clear if you compare the times given for aspects of the major planets in different ephemerides. Global networks of tracking stations produce the observations that make generation of the precise ephemerides possible. The GPS position solution can be improved by using a better satellite ephemeris. Timing an occultation to a fraction of a second allows the observed location to be referenced against the predicted position from the computed ephemeris, perhaps leading to an update. The navigation message contains the satellite ephemeris, which is a numerical model of the satellite's orbit. Origin Early 16th century: from Latin, from Greek ephēmeros 'lasting only a day'. Definition of ephemeris in US English: ephemeris nounəˈfem(ə)rəsəˈfɛm(ə)rəs Astrology Astronomy 1A table or data file giving the calculated positions of a celestial object at regular intervals throughout a period. 〔天文，占星〕星历表 you can compute an ephemeris for any comet that is discovered and plot an accurate finder chart Example sentencesExamples It's not commonly realised that there is a strong notional element in some of the times so confidently listed in the ephemeris, as will become clear if you compare the times given for aspects of the major planets in different ephemerides. The navigation message contains the satellite ephemeris, which is a numerical model of the satellite's orbit. The GPS position solution can be improved by using a better satellite ephemeris. Global networks of tracking stations produce the observations that make generation of the precise ephemerides possible. Timing an occultation to a fraction of a second allows the observed location to be referenced against the predicted position from the computed ephemeris, perhaps leading to an update. 1.1 A book or set of such tables or files. （带星历表的）历书 Example sentencesExamples The first of his long-running annual ephemerides appeared in 1655 and the following year he published An Emendation of Hartgil's Astronomical Tables. Alternatively, you can use an ephemeris to look up the daily positions, but these are usually more expensive and not really worth buying unless you are going to be tracking other astrological things too. He purchased an ephemeris. Origin Early 16th century: from Latin, from Greek ephēmeros ‘lasting only a day’.
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