In this video I will discuss the orbit of Mercury. This is where Mercury is very different from the other planets in our solar system. For one, the eccentricity of Mercury is very large. In fact, it is the largest eccentricity (0.206) of all the 8 planets (Poor Pluto, kicked out of the Planetary Club. At least Micky still loves him.). That means the distance between the average distance to the Sun and the distance when is at perihelion or aphelion is as much as 20.6%.