The anomalous year is the time elapsed between two consecutive steps of a planet due to its perihelion. The orbit of the Earth is elliptical. The major axis of this ellipse is called the aphid line. The point where the Earth is closest to the Sun is called perihelion and the point where afelio is furthest. The Earth is in the perihelion on January 3 and in the aphelion on July 4. The average duration of the anomalistic year is: 365,259 635 864 days (365 d 6 h 13 min 52 s) for the J2000.0 season.
The duration of the anomalistic year is slightly longer than the sidereal year because the line of the apses has an annual movement in the direct direction of 11.7 seconds of arc approximately, which means that the Sun takes more time every year enter in conjunction with the perihelion.
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