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GPS III SV10

Falcon 9 Block 5, SpaceX

Space Launch Complex 40, Cape Canaveral SFS, FL, USA

Launch time

T-0

Tue 21 Apr, 08:53:25 CEST

06:53:25 UTC

The rocket put its payload into the planned orbit.

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How sure is this date?

The source gives second precision. Launch plans can change.

Launch probability 90%

Weather concerns: Cumulus Cloud Rule, Thick Cloud Layers Rule

Launch record updated by LL2

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Mission

GPS III SV10 on Falcon 9 Block 5. Tue 21 Apr 2026, 06:53:25 UTC. Reported outcome: Success. Launch site: Space Launch Complex 40. Source: Launch Library 2.

Tenth of ten GPS III missions.

Mission type
Navigation
Orbit
Medium Earth Orbit

Programmes: Global Positioning System

Falcon 9 liftoff from LC-39A
Credit: SpaceX · CC BY-NC 2.0

Mission patches

  • GPS III SV10 Patch

Patch artwork is not shown because its image licence is unconfirmed.

Launch timeline

Times are relative to liftoff.

  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 17 s

    Max-Q

    Maximum dynamic pressure

  12. T+2 min 29 s

    MECO

    Cut-off of the main engine

  13. T+2 min 32 s

    Stage 2 Separation

    Separation of the second stage from the first

  14. T+2 min 40 s

    SES-1

    First start of the second engine

  15. T+3 min 29 s

    Fairing Separation

    Separation of the payload fairing

  16. T+6 min 12 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+8 min 6 s

    SECO-1

    First cut-off of the second engine

  19. T+8 min 9 s

    Stage 1 Landing Burn

    Start of the first stage landing burn

  20. T+8 min 34 s

    Stage 1 Landing

    Landing of the first stage

  21. T+1 h 3 min 31 s

    SES-2

    Second start of the second engine

  22. T+1 h 4 min 18 s

    SECO-2

    Second cut-off of the second engine

  23. T+1 h 29 min 19 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 .

    Source updates from Launch Library 2 (14)

    Announcements supplied by LL2 may predate our tracking. They are separate from changes observed by Space Right Now.

    1. LL2 update

      Launch success.

      Read the source update
    2. LL2 update

      Spacecraft separation.

      Read the source update
    3. LL2 update

      Liftoff.

      Read the source update
    4. LL2 update

      Unofficial Re-stream by SPACE AFFAIRS has started

      Read the source update
    5. LL2 update

      Updated launch weather, 90% GO.

      Read the source update
    6. LL2 update

      Tweaked T-0.

      Read the source update
    7. LL2 update

      Now targeting Apr 21 at 06:53 UTC

      Read the source update
    8. LL2 update

      Now targeting Apr 20 at 06:57 UTC

      Read the source update
    9. LL2 update

      GO for launch.

      Read the source update
    10. LL2 update

      NET April 20 per NOTAMs; TBC.

      Read the source update
    11. LL2 update

      Launch vehicle switched from Vulcan to Falcon 9 due to continuous problems with Vulcan’s sold rocket boosters.

      Read the source update
    12. LL2 update

      NET March.

      Read the source update
    13. LL2 update

      Aiming for launch in late 2025.

      Read the source update
    14. LL2 update

      Adding launch

      Read the source update

    Launch pad

    Space Launch Complex 40

    Cape Canaveral SFS, FL, USA (US)

    Coordinates: 28.56194122, -80.57735736

    View launch pad on a map
    Launch data: The Space Devs (Launch Library 2)

    Launch plans change. Times are estimates from the source, not a guarantee of liftoff.