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Encyclopediasidereal yearsidereal year, time required for the earth to complete an orbit of the sun relative to the stars. The sidereal year is 365 days, 6 hr, 9 min, 9.5 sec of mean solar time (see solar time). It is 20 min longer than the tropical year because of the precession of the equinoxes; for this reason, the sidereal year does not stay in step with the seasons. The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2007, Columbia University Press. All rights reserved. More on sidereal year from Infoplease:
- Astronomical Constants - Astronomical Constants Light-year (distance traveled by light in one year) 5,880,000,000,000 mi ...
- Astronomical Constants - Astronomical Constants Light-year (distance traveled by light in one year) 5,880,000,000,000 mi ...
- light-year - light-year light-year, in astronomy, unit of length equal to the distance light travels in one ...
- anomalistic year - anomalistic year anomalistic year , time required for the earth to go from the perihelion point ...
- year - year year, timerequired for the earth to complete one orbit about the sun. The solar or tropical ...
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