
SES-20 & SES-21
This mission is complete.
Vehicle
Atlas V 531
Profile →Atlas V is an expendable launch system in the Atlas rocket family. It was formerly operated by Lockheed Martin and is now operated by United Launch Alliance (ULA), a joint venture with...
Provider
United Launch Alliance
Profile →USA • Founded 2006
United Launch Alliance (ULA) is a joint venture of Lockheed Martin Space Systems and Boeing Defense, Space & Security. ULA was formed in December 2006 by combining the teams at these companies which provide spa...
Mission Brief
SES-20 & SES-21 are a pair of C-band communication satellites built by Boeing, using the highly efficient all-electric propulsion BSS-702SP satellite bus. These satellites will enable SES to clear 280MHz of mid-band spectrum for 5G use while seamlessly migrating SES’s existing C-band customers and ensuring the continued delivery of digital television to nearly 120 million American TV homes and other critical data services.
Mission Timeline
11 / 11100%Launch Site
Space Launch Complex 41, Cape Canaveral SFS, FL, USA
Weather
- Condition
- No formal weather concerns published
- Temperature
- N/A
- Wind
- N/A
- GO Probability
- 90%
Schedule History
No delays or schedule changes recorded.



