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EPHEMERIS TIME
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Dictionary entry overview: What does ephemeris time mean?
• EPHEMERIS TIME (noun)
The noun EPHEMERIS TIME has 1 sense:
1. (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
Familiarity information: EPHEMERIS TIME used as a noun is very rare.
Dictionary entry details
Sense 1
Meaning:
(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
Classified under:
Nouns denoting time and temporal relations
Synonyms:
ephemeris time; TDT; terrestrial dynamical time; terrestrial time; TT
Hypernyms ("ephemeris time" is a kind of...):
time unit; unit of time (a unit for measuring time periods)
Domain category:
astronomy; uranology (the branch of physics that studies celestial bodies and the universe as a whole)
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