sidereal year
The "sidereal year" is crucial in astronomy for understanding the Earth's movement relative to distant stars.
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Definition
C1Astronomy
(technical, academic)The time it takes for the Earth to complete one orbit around the Sun, measured relative to the fixed stars, lasting approximately 365.25636 days.
Example
- A sidereal year is slightly longer than a tropical year due to the precession of the equinoxes.
- Astronomers use the sidereal year to track the Earth's position relative to distant stars.
Similar
Terms that have similar or relatively close meanings to "sidereal year":
sidereal daysidereal periodgalactic yeartropical yearlight yearsynodic month