Find the characteristics of the ellipse: a,e,h,rₚ,rₐ,vₚ,v₂,p, and p.
a. Semi-major axis, eccentricity, focus, perihelion distance, aphelion distance, velocity at perihelion, velocity at aphelion, focal parameter, period
b. Radius, ellipticity, height, radial position, angular position, velocity, acceleration, circumference, radius
c. Major axis, inclination, center, closest distance, farthest distance, escape velocity, circular velocity, semi-latus rectum, period
d. Diameter, axis ratio, depth, closest approach, farthest point, speed, kinetic energy, semi-focus distance, frequency