# ephemeris

> English word · Noun · IPA /ɪˈfɛməɹɪs/ · frequency rank #86,248

## Definitions
1. A journal or diary.
2. A table giving the apparent position of celestial bodies throughout the year; normally given as right ascension and declination.
3. 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”).

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/ephemeris