sidereal year
- the orbital period of the earth around the sun, taking the stars as a reference frame. It is 20 minutes longer than the solar or tropical year because of precession.
noun: sidereal year, plural noun: sidereal years
- 更多解釋
- IPA[sīˈdirēəl yi(ə)r]
- the orbital period of the earth around the sun, taking the stars as a reference frame. It is 20 ...
Oxford American Dictionary
知識+
怎麼跟外國人解釋農曆阿?
...year, this period (354.37 days) is sometimes referred to as lunar year, corresponding to thirteen sidereal months (355.18 days). Examples Most lunar...