Astronomy View all facts Glossary Help |
abstraction > mathematical concept > unit > time unit > year > sidereal year |
sidereal year | ||||
subject | fact |
sidereal year | has definition A period of time based on the revolution of the Earth around the Sun, where a year is defined as the mean period of revolution with respect to the background stars. | |
is an instance of year | ||
time unit | is a unit of time | |
unit | has historical origin | |
represents |