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Anomalistic Year

Anomalistic year is, in astronomy , the time between two successive passages of the Earth to its perihelion.

The orbit Earth is elliptical , the distance between Earth and Sun is not constant and is the closest point, the perihelion, which is considered to determine an anomalistic year. However, because of influences gravity of other planets of the solar system , the perihelion moves slightly each time (compared to stars , which are assumed fixed here) and anomalistic year is slightly longer than a sidereal year ( 4 min 43 sec).

In 2000 , the value of the anomalistic year was 365.259635864 days (about 365 days 6 hours 13 min and 53 s).