Atlas V 531 | SES-20 & SES-21
Space Launch Complex 41
Cape Canaveral SFS, FL, USA
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United Launch Alliance
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 spacecraft launch services to the government of the United States. ULA launches from both coasts of the US. They launch their Atlas V vehicle from LC-41 in Cape Canaveral and LC-3E at Vandeberg. Their Delta IV launches from LC-37 at Cape Canaveral and LC-6 at Vandenberg.
SES-20 & SES-21
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.
Atlas V 531
Height 60.00 Meters
Max Stages 2
Mass To GTO 7450 kg
Liftoff Thrust 0 kN
Diameter 3.80 Meters
Mass To LEO 15530 kg
Liftoff Mass 479 Tonnes
Launch Success 5
Consecutive Success 5
Maiden Flight 2010-08-14
Launch Failures 0
Updates
Cosmic_Penguin
2022-10-05T04:37:42+0000
Launch success
SwGustav
2022-10-04T21:36:22+0000
Liftoff
SwGustav
2022-10-04T21:16:51+0000
Coverage live
Nosu
2022-10-04T15:56:11+0000
Weather 90%
Nosu
2022-10-04T06:54:43+0000
Weather 80%
Cosmic_Penguin
2022-10-01T16:53:24+0000
Weather 70%
SwGustav
2022-09-27T21:43:17+0000
Delayed to Oct 4th due to Hurricane Ian
Nosu
2022-09-26T13:27:32+0000
Weather 20%
Cosmic_Penguin
2022-09-20T21:06:42+0000
Added launch time
Cosmic_Penguin
2022-09-09T07:18:18+0000
NET September 30
Nosu
2022-08-22T06:29:08+0000
Late September
Cosmic_Penguin
2022-07-02T10:44:32+0000
NET September
Cosmic_Penguin
2022-03-23T04:44:06+0000
NET August 2022
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