Status
Success
Rocket
Mission Details
Quasar-21 (USA-279) (NROL-52)
The fourth generation of Quasar satellites, also known as SDS-4, represents the latest evolution in the Satellite Data System (SDS) developed by the United States Air Force. Building upon the capabilities of previous generations, SDS-4 continues to serve as a critical communication relay for real-time data from US reconnaissance satellites and supports communication needs for USAF aircraft and ground stations. While specific details about SDS-4 remain classified, it likely incorporates state-of-the-art technology advancements to further improve data transmission rates, communication reliability, and overall performance.
Payloads: 1
Geostationary Earth Orbit
Location
SLC-41, Cape Canaveral SFS, Florida, USA
Stats
2017
70th orbital launch attempt
United Launch Alliance
122nd mission
7th mission of 2017
121st successful mission
117th consecutive successful mission
Atlas V
74th mission
6th mission of 2017
73rd successful mission
64th consecutive successful mission