English
Detailed Synonyms for ephemeris time in English
ephemeris time:
ephemeris time [the ~] noun
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the ephemeris time
– (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 1the TDT; the TT; the ephemeris time; the terrestrial dynamical time; the terrestrial time– (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 1