Eccentricity - Eccentricity Demonstrator
Use this for practice for the Lab Practical.
The closer to 'ZERO' the eccentricity number is the more circular the orbit is. The closer to 'ONE' the eccentricity number is the more elliptical the orbit is.
Remember the eccentricity formula is on the front page of you Reference Tables
Eccentricity = the distance between the foci DIVIDED BY the length of the major axis