O3b mPower 9-10

Mission

O3b mPower 9-10 on Falcon 9 Block 5. Tue 22 Jul 2025, 21:12 UTC. Reported outcome: Success. Launch site: Space Launch Complex 40. Source: Launch Library 2.

2 high-throughput communications satellites in Medium Earth Orbit (MEO) built by Boeing and operated by SES.

Mission type

Communications

Orbit

Medium Earth Orbit

Launch timeline

Times are relative to liftoff. Clock times are not shown while T-0 is unconfirmed or on hold.

1. T-38 min

   GO for Prop Load

   Launch director verifies go for propellant load

2. T-35 min

   Stage 1 LOX Load

   Start of liquid oxygen loading in the first stage

3. T-35 min

   Prop Load

   Start of propelland loading

4. T-16 min

   Stage 2 LOX Load

   Start of liquid oxygen loading in the second stage

5. T-7 min

   Engine Chill

   Start of engine chilling

6. T-1 min

   Tank Press

   Fuel tanks are pressurized to flight levels

7. T-1 min

   Startup

   The onboard computer takes control over the countdown and runs last checks

8. T-45 s

   GO for Launch

   Launch director verifies go for launch

9. T-3 s

   Ignition

   Start of the engine ignition sequence

10. T-0

    Liftoff

    First upwards movement of the rocket

11. T+1 min 11 s

    Max-Q

    Maximum dynamic pressure

12. T+2 min 26 s

    MECO

    Cut-off of the main engine

13. T+2 min 30 s

    Stage 2 Separation

    Separation of the second stage from the first

14. T+2 min 38 s

    SES-1

    First start of the second engine

15. T+3 min 21 s

    Fairing Separation

    Separation of the payload fairing

16. T+6 min 14 s

    Entry Burn Startup

    Start of the atmospheric entry burn

17. T+6 min 41 s

    Entry Burn Shutdown

    End of the atmospheric entry burn

18. T+7 min 51 s

    SECO-1

    First cut-off of the second engine

19. T+8 min 11 s

    Stage 1 Landing Burn

    Start of the first stage landing burn

20. T+8 min 35 s

    Stage 1 Landing

    Landing of the first stage

21. T+26 min 55 s

    SES-2

    Second start of the second engine

22. T+27 min 27 s

    SECO-2

    Second cut-off of the second engine

23. T+1 h 49 min 36 s

    SES-3

    Third start of the second engine

24. T+1 h 50 min 3 s

    SECO-3

    Third cut-off of the second engine

25. T+1 h 53 min 14 s

    Payload Separation

    Final deployment of the payload from the rocket

26. T+2 h 14 s

    Payload Separation

    Final deployment of the payload from the rocket

Slip history

Changes recorded by Space Right Now

No changes since we started tracking on Sat 10 Oct 2026, 11:16 UTC.

Launch pad

Space Launch Complex 40

Cape Canaveral SFS, FL, USA (US)

Coordinates: 28.56194122, -80.57735736