Revolution of the planets of the solar system
Revolution
The planets of the solar system all revolve around the Sun under the effect of gravitation.
This movement is called the revolution, the period of revolution is the time a planet takes to return to its initial position.
Orbital characterictics
In order of period of increasing revolution.
| Planet | Revolution period | Average orbital speed | Orbit inclination | Eccentricity |
|---|---|---|---|---|
| 1. Mercury | 87.969 days | 47.362 km/s | 7° | 0.2056° |
| 2. Venus | 224.667 days | 35.026 km/s | 3.39471° | 0.00678° |
| 3. Earth | 365.256 days | 29.783 km/s | 0° | 0.01671022° |
| 4. Mars | 686.885 days | 24.08 km/s | 1.85° | 0.09339° |
| 5. Jupiter | 4,332.01 days | 13.059 km/s | 1.304° | 0.04839° |
| 6. Saturn | 10,754 days | 9.641 km/s | 2.486° | 0.0539° |
| 7. Uranus | 30,698 days | 6.797 km/s | 0.77323° | 0.04726° |
| 8. Neptune | 60,216.8 days | 5.432 km/s | 1.77° | 0.00859° |
Aphelion and perihelion
The orbits of the planets are not perfectly circular, but elliptical. This means that there is a point closer to the Sun (the perihelion) and a point further away (the aphelion).
