8
In astrodynamics or celestial mechanics an elliptic orbit is a Kepler orbit with the eccentricity less than 1; this includes the special case of a circular orbit, with eccentricity equal to zero.
Added 7/6/2014 1:35:56 PM
This answer has been confirmed as correct and helpful.
Confirmed by
yumdrea [7/6/2014 1:44:26 PM]