Maybe it has been asked and answered and I just don't know how to search for it. I know there is an answer but it's the question that I think is off. So...
I suck at math. I can do a little basic algebra. That is why I am playing a game that is all about engineering and math! I have been going through sites reading about orbits and have found this. e=c/a where e is the eccentricity, c is the focal distance, and a is the semi-major axis. I know e and I know a. So c=a*e? Can I determine a periapsis and apoapsis from this and establish an orbit with the desired eccentricity and axis?