Solar Dynamics Observator (SDO) Research Mission By NASA

Orbit
After launch, the spacecraft was placed into an orbit around the Earth with an initial perigee of about 2,500 kilometres (1,600 mi). SDO then underwent a series of orbit-raising maneuvers which adjusted its orbit until the spacecraft reached its planned circular, geosynchronous orbit at an altitude of 35,789 kilometres (22,238 mi), at 102° W longitude, inclined at 28.5°.