ephemeris

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e·phem·er·is

 (ĭ-fĕm′ər-ĭs)
n. pl. eph·e·mer·i·des (ĕf′ə-mĕr′ə-dēz′)
A table giving the coordinates of a celestial body at a number of specific times during a given period.

[Late Latin ephēmeris, from Greek, diary, from ephēmeros, daily; see ephemeral.]

ephemeris

(ɪˈfɛmərɪs)
n, pl ephemerides (ˌɛfɪˈmɛrɪˌdiːz)
1. (Astronomy) a table giving the future positions of a planet, comet, or satellite
2. (Astronomy) an annual publication giving the positions of the sun, moon, and planets during the course of a year, information concerning eclipses, astronomical constants, etc
3. (Library Science & Bibliography) obsolete a diary or almanac
[C16: from Latin, from Greek: diary, journal; see ephemeral]

e•phem•er•is

(ɪˈfɛm ər ɪs)

n., pl. e•phe•mer•i•des (ˌɛf əˈmɛr ɪˌdiz)
1. a table showing the positions of a heavenly body on a number of dates in a regular sequence.
2. an astronomical almanac containing such tables.
3. Archaic. an almanac or calendar.
[1545–55; < Latin ephēmeris day book, diary < Greek ephēmerís diary, account book]

ephemeris

an astronomical almanac giving, as an aid to the astronomer and navigator, the locations of celestial bodies for each day of the year.
See also: Almanacs

ephemeris

A table that shows the coordinates of a celestial body at various specific times.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.ephemeris - an annual publication containing astronomical tables that give the positions of the celestial bodies throughout the year; "today computers calculate the ephemerides"
yearly, annual, yearbook - a reference book that is published regularly once every year
Translations
References in periodicals archive ?
To calculate this quantity I employ a routine developed from the Explanatory Supplement to the Astronomical Ephemeris and the Canon of Solar Eclipses (references 3 and 4 respectively in Wilhelm's paper) which, considering its simplicity, compares very favourably with this new algorithm.
Naval Observatory and the Astronomical Ephemeris from the Royal Greenwich Observatory were identical, except for the introductory pages.
A separate volume, the Explanatory Supplement to the Astronomical Ephemeris and the American Ephemeris and Nautical Almanac, published in 1961, contained the complete explanations of the ephemerides and their computation.

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