a table giving the future positions of a planet, comet, or satellite
2.
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. obsolete
a diary or almanac
Word origin
C16: from Latin, from Greek: diary, journal; see ephemeral
Examples of 'ephemerides' in a sentence
ephemerides
We have also determined their masses, dynamical parallaxes and ephemerides.
Novaković B., Todorović N. 2006, 'Orbits of four double stars', Serbian Astronomical Journalhttp://www.doiserbia.nb.rs/img/doi/1450-698X/2006/1450-698X0672021N.pdf. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
For seven objects with poorly known orbits we present their ephemerides for 2015–2016.
Černis K., Wlodarczyk I., Eglitis I. 2015, 'Observational Data and Orbits of the Asteroids Discovered at the Baldone Observatoryin 2008–2013', Open Astronomyhttp://www.degruyter.com/view/j/astro.2015.24.issue-3/astro-2017-0226/astro-2017-0226.xml?format=INT. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)