Spaceguy5

Very useful program! I have a small suggestion for a future release though... What about calculating orbital plane changes? Last semester, I made a program similar to this in MATLAB for a project (User selected a planet, typed in starting orbit parameters, and a 2nd orbit's parameters, and it calculated what would be required for a hohmann transfer and a plane change while also displaying velocity/period/delta V and graphing the orbits in 3D).