# The orbit of Pluto is elongated with an eccentricity of 0.25. What is the approximate ratio of Pluto's orbital speed at perihelion to its orbital speed at aphelion?

##### 1 Answer

May 24, 2016

#### Explanation:

Use

Here e = 0.25, approximately.

Now, for any planet, the ratio of the speeds at perihelion and aphelion becomes