sidereal year (redirected from sidereal years)

sidereal year

n.

The time required for one complete revolution of the earth about the sun, relative to the fixed stars, or 365 days, 6 hours, 9 minutes, 9.54 seconds in units of mean solar time.

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sidereal year

n

(Astronomy) See year [5]

Thesaurus

Noun

1.

sidereal year - the time for the earth to make one complete revolution around the sun, relative to the fixed stars year - the period of time that it takes for a planet (as, e.g., Earth or Mars) to make a complete revolution around the sun; "a Martian year takes 687 of our days" sidereal time - measured by the diurnal motion of stars