Meaning Of The Word Ephemeris time
What's the definition of Ephemeris time? Find Ephemeris time meanings, definitions and more at the Real Dictionary online.
Ephemeris time Meaning
| Ephemeris time Definition |
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What's The Definition Of Ephemeris time?
ephemeris time in American English
noun: time measured by the orbital movements of the earth, the moon, and the planets ephemeris time in British English noun: time that is based on the orbit of the earth around the sun rather than the axial rotation of the earth, one ephemeris second being 1/31 556 925.9747 of the tropical year 1900. It was used from 1960 to 1983 as an astronomical timescale but has been replac |
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