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SES-20 & SES-21
All launches
United Launch Alliance

SES-20 & SES-21

Success

Atlas V 531
T-minus to liftoff

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00

HOURS

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00

MINUTES

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00

SECONDS

Oct 4, 21:36:00 UTC
StatusSuccess
VehicleAtlas V 531
OrbitGeostationary Orbit
PadSpace Launch Complex 41
Loading map…

Mission

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.

Quick facts

VehicleAtlas V 531
OrbitGeostationary Orbit
PadSpace Launch Complex 41
SiteCape Canaveral SFS, FL, USA
WindowOct 4, 21:36:00 UTC→Oct 4, 22:21:00 UTC

Vehicle

FamilyAtlas
Acquiring satellite view…
Trajectory unknown
Space Launch Complex 41
Cape Canaveral SFS, FL, USA
28.583, -80.583
Scrub riskLOW
Go89%
Q

Q's read

Weather & scrubLOW risk
Weather Go89%LL2 Go90%Wind4 ktGusts4 ktCloud50%Temp77°F

Limiting rule: No flight through cumulus cloud with top at or above the freezing level.

4800% cloud cover in layer above freezing (14775 ft) — approximated