UNIVERSEH: The European Space University

Source:

Short definition: 

An ephemeris is a table or data file that gives the positions of celestial objects at specific times.

Detailed Definition:

An ephemeris is a detailed table or data file that provides the positions of celestial objects in the sky at specific times. Ephemerides are used in astronomy to predict the future positions of these objects and to understand their orbits and movements. They can be calculated for any point in time and are usually given for a series of times at regular intervals, such as every day or every hour. Initially ephemerides were written, then printed, nowadays, they are digital. Ephemerides of the Solar System play a crucial role in navigating spacecraft.

Etymology:

ephemeris (Latin) - diary; ephemeris (Greek) - diary, journal

Sample Sentence(s):

"I consulted an ephemeris to find out when the next solar eclipse would occur."

"The astronomer used an ephemeris to predict when the comet would be visible in the sky."

"Ephemerides are widely used in astrology."

Translations:

French:

Éphéméride

German:

Ephemeriden

Polish:

Efemeryda

Swedish:

Efemerid

Links to videos/articles:

https://en.wikipedia.org/wiki/Ephemeris

https://www.astro.com/swisseph/swepha_e.htm

https://ssd.jpl.nasa.gov/horizons/