Question 151908
Look at this --> http://www.1728.com/ellipse.htm

Then understand that perigee means 'closest point' and apogee means 'most distant point'.

You are told that the perigee is 363000. Apogee is 405500. Earth is one focus.

Let's assume that earth is f[1]

By looking at the link above, you can see that perigee is the distance from f[1] to A. Apogee is the distance from f[1] to B.

The eccentricity is the ratio of the {{{distanceFromCenterToFocus/distanceFromCenterToVertex}}}
This is also given by {{{distanceBetweenFoci/distanceOfMajorAxis}}}

{{{(Apogee-Perigee)/(Apogee+Perigee)}}}
1) {{{(405500-363000)/(405500+363000)}}}
{{{0.0553}}}