
Conics are characterized by different values of the
orbital parameters (click
here to know more about the orbital parameters): the major semiaxis, is
easily defined for the ellipse and the circle. In the
case of a parabola, it is considered infinite while for
an hyperbola, it is considered negative.
the eccentricity,
in the case of an ellipse, will assume values ranging
from 0 (for the circle) to 1. While in the case of a
parabola it will assume value =1 and will be superior to
1 in the case of an hyperbola.
