›› Measurement unit: sidereal year

Full name: sidereal year

Plural form: years

Symbol: yr

Alternate spelling: sidereal years

Category type: time

Scale factor: 31558149.504


›› SI unit: second

The SI base unit for time is the second.
1 second is equal to 3.1687536047488E-8 sidereal year.


›› Convert sidereal year to another unit

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›› Definition: Year

A sidereal year (from Latin sidus "asterism, star") is the time taken by the Earth to orbit the Sun once with respect to the fixed stars. Hence it is also the time taken for the Sun to return to the same position with respect to the fixed stars after apparently travelling once around the ecliptic. It equals 365.25636 SI days for the J2000.0 epoch.


›› Sample conversions: sidereal year

sidereal year to tropical year
sidereal year to quarter
sidereal year to day
sidereal year to hour
sidereal year to anomalistic year
sidereal year to draconic month
sidereal year to week
sidereal year to Gregorian year
sidereal year to anomalistic month