View synonyms for ephemeris

ephemeris

[ ih-fem-er-is ]

Phonetic (Standard)IPA

noun

, plural e·phe·mer·i·des [ef-, uh, -, mer, -i-deez].

a table showing the positions of a heavenly body on a number of dates in a regular sequence.
an astronomical almanac containing such tables.
Archaic. an almanac or calendar.

ephemeris

/ ɪˈfɛmərɪs /

a table giving the future positions of a planet, comet, or satellite
an annual publication giving the positions of the sun, moon, and planets during the course of a year, information concerning eclipses, astronomical constants, etc
obsolete.
a diary or almanac

ephemeris

/ ĭ-fĕm′ər-ĭs /

, Plural ephemerides ĕf′ə-mĕr′ə-dēz′

A table giving the coordinates of a celestial body at specific times during a given period. Ephemerides can be used by navigators to determine their longitude while at sea and by astronomers in following objects such as comets. The use of computers has allowed modern ephemerides to determine celestial positions with far greater accuracy than in earlier publications.

1545–55; < Latin ephēmeris day book, diary < Greek ephēmerís diary, account book, derivative of ephḗmeros; ephemeral

C16: from Latin, from Greek: diary, journal; see ephemeral

Dictys (the full title of whose book is Ephemeris Belli Trojani) is not only the longer but the better written of the two.

For instance, under the entry newspaper occurs the attractive word ephemeris.

Knowing the location of Venus in the sky, which can be ascertained from the Ephemeris, the observer can find it by day.

Take in hand, then, the Ephemeris for the year of your birth and read this chapter with it in view.

Possibly the Latin Ephemeris was the work of Septimius himself.

April 19, 2024tortuous

[tawr-choo-uhs ]

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