Tdt (Noun)
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.
Classification
Nouns denoting time and temporal relations.
Examples
- The astronomers used terrestrial time to calculate the orbital periods of the newly discovered exoplanets.
- The International Astronomical Union recommended using terrestrial time as the standard time scale for astronomical calculations.
- Terrestrial time is a more accurate measure of time than universal time due to the corrections for the Earth's irregular motions.
- The computer algorithm used terrestrial time to schedule the observations of celestial events.
- In order to synchronize the clocks on different spacecraft, mission control used terrestrial time as a reference frame.