(astronomy) a measure of time defined by Earths orbital motion; terrestrial time is mean solar time corrected for the irregularities of the Earths motions
[ Syn: terrestrial time , tt , terrestrial dynamical time , tdt , ephemeris time ]
(astronomy) a measure of time defined by Earths orbital motion; terrestrial time is mean solar time corrected for the irregularities of the Earths motions
[ Syn: terrestrial time , tt , terrestrial dynamical time , tdt , ephemeris time ]