Keywords: Ellipse Polar.svg ellipse When applied to orbits with the object orbiting the focus F<sub>1</sub> this ellipse has the following properties <math>\overrightarrow A F_1 d_1</math> is the periapsis <math>\overrightarrow B F_1 d_2</math> is the apoapsis Own Inductiveload 10/12/2008 Ellipses |