Question

If planet X is orbiting around our Sun and has an eccentricity, e, of 0.45 and a semi-major axis, a, of 6.6 AUs, what is the farthest distance it is from the Sun?

Answer 1

The length of the semi-major axis a of an ellipse is related to the semi-minor axis's length b through the eccentricity e as follows:


\[\Large b = a \sqrt{1-e^2}\]

ripped straight from wiki but it should help, i hope.