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Ephemeris
//ɪˈfɛməɹəs// noun
Definitions
Noun
- 1 A journal or diary. obsolete
"Wee heard the King was solacing at the Caspian Sea, whither now wee are travelling. Till then let us keepe an Ephemerides or day-journey."
- 2 an annual publication containing astronomical tables that give the positions of the celestial bodies throughout the year wordnet
- 3 A table giving the apparent position of celestial bodies throughout the year; normally given as right ascension and declination.
"[…]Mr. Samuel got 150 pounds of bread, with a small quantity of rum and wine, also a quadrant and compass; but he was forbidden on pain of death to touch either map, ephemeris, book of astronomical observations, sextant, timekeeper, or any of my surveys or drawings."
- 4 Computer software that calculates the apparent position of celestial bodies.
Etymology
From New Latin ephēmeris, from Ancient Greek ἐφημερίς (ephēmerís, “diary, calendar”), from ἐφήμερος (ephḗmeros, “daily”).
See also for "ephemeris"
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