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Definition of Ephemeris time
1. Noun. (astronomy) a measure of time defined by Earth's orbital motion; terrestrial time is mean solar time corrected for the irregularities of the Earth's motions.
Exact synonyms: Tdt, Terrestrial Dynamical Time, Terrestrial Time, Tt
Category relationships: Astronomy, Uranology
Generic synonyms: Time Unit, Unit Of Time
Category relationships: Astronomy, Uranology
Generic synonyms: Time Unit, Unit Of Time
Definition of Ephemeris time
1. Noun. (astronomy) A former standard astronomical time scale intended to overcome the drawbacks of irregularly fluctuating mean solar time, superseded in the 1970s. ¹
2. Noun. (astronomy) A modern relativistic-coordinate time scale. ¹
¹ Source: wiktionary.com
Lexicographical Neighbors of Ephemeris Time
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