For values of e from 0 to 1 the orbit`s shape is an increasingly elongated (or flatter) ellipse; for values of e from 1 to infinity the orbit is a hyperbola branch making a total turn of 2 arccsc e, decreasing from 180 to 0 degrees. The limit case between an ellipse and a hyperbola, when e equals 1, is parabola. Radial trajectories are classified....
Found on
http://en.wikipedia.org/wiki/Orbital_eccentricity
Objects orbit in an elliptical fashion; eccentricity can be thought of as the amount by which the orbit of a celestial body deviates from a circular shape.
Found on
http://www.moonconnection.com/moon-glossary.phtml
No exact match found.
