Before revision: After its launch aboard a Delta II from Vandenberg Air Force Base in California, SAC-D was carried into a 657 km (408 mi) sun-synchronous orbit to begin its 3-year mission.
After revision: After its launch aboard a Delta II from Vandenberg Air Force Base in California, SAC-D was carried into a 657 km (408 mi) Sun-synchronous orbit to begin its 3-year mission.