Satellite Orbits Treat the basic description and dynamics of satellite orbits Major perturbations on GPS satellite orbits Sources of orbit information SP3 format from the International gPs service Broadcast ephemeris message Accuracy of orbits and health of satellites Logistics: Who can attend lecture on Fridays at11-12:30? 02/20/02 12.540Lec0502/20/02 12.540 Lec 05 2 Satellite Orbits • Treat the basic description and dynamics of satellite orbits • Major perturbations on GPS satellite orbits • Sources of orbit information: – SP3 format from the International GPS service – Broadcast ephemeris message • Accuracy of orbits and health of satellites • Logistics: Who can attend lecture on Fridays at 11-12:30?