The lessons on this page explain the connections between orbit size and period, matching orbits for design purposes, and applications of conservation of energy to orbital systems.

1. Orbital Periods & Kepler's 3rd Law

2. Orbital Resonances & Patterns with matched orbits

3. Orbital Energy:  A deeper dive into applications of Energy and patterns

This lesson lays out key terminology and shows the connection between semi-major axis and orbital period.  Further, this lesson shows how to design orbits to have specific periods.  The video shows why adjusting the apoapsis and periapsis altitudes by the same amount result in a constant orbit for a satellite.  The lesson also sets the stage for futher lessons on orbital resonance.

This lesson shows how to design orbits relying on resonance to allow for several targets to interact in desired ways.

This video lays out the concept of Total Specific Mechanical Energy of an orbiting system.  Then this lesson applies these ideas onto sample scenarios to see how they manifest in a real world environment.  Understanding Energy can allow one to analyse complex systems much more easily.