ephemerides

Noun

The word is derived from ephemeris

Meaning

of Ephemeris

Source: Webster's dictionary

Synonyms

Examples

Although directly based on the then-best available observational measurements, the definition was recast in terms of the then-best mathematical derivations from celestial mechanics and planetary ephemerides. Source: Internet

Astronomers produce new fundamental ephemerides as the accuracy of observation improves and as the understanding of the dynamics increases, and from these ephemerides various astronomical values, including the obliquity, are derived. Source: Internet

Barycentric Dynamical Time (TDB), a form of atomic time, is now used in the construction of the ephemerides of the planets and other solar system objects, for two main reasons. Source: Internet

Apart from constructing astronomical ephemerides and mathematical tables, he calculated a table of eclipses for 1800 years. Source: Internet

For example, IAU Commission 4 (Ephemerides), Recommendations to IAU General Assembly 1976, Notes on Recommendation 5, note 1, as well as other sources, indicate the time scale for apparent geocentric ephemerides as a proper time. Source: Internet

Hence, it is possible to construct ephemerides entirely in SI units, which is increasingly becoming the norm. Source: Internet

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