Satellites and Kepler's third law

What this note covers

1. Gravity supplies the orbital resultant
2. Deriving the period–radius relationship
3. Altitude, centre radius and geostationary conditions
4. Interpreting orbit changes without contradictory forces
5. Using satellite observations to infer a source mass
6. Graphs, anomalies and the boundaries of the model

6 sections · 10 key terms & formulas · 6 common mistakes