NROL-77

Mission

NROL-77 on Falcon 9 Block 5. Tue 9 Dec 2025, 19:16:25 UTC. Reported outcome: Success. Launch site: Space Launch Complex 40. Source: Launch Library 2.

Classified payload for the US National Reconnaissance Office.

Mission type

Government/Top Secret

Orbit

Low Earth Orbit

Rocket file imagery

Launch timeline

Times are relative to liftoff.

1. T-38 minTue 9 Dec, 19:38 CET

   GO for Prop Load

   Launch director verifies go for propellant load

2. T-35 minTue 9 Dec, 19:41 CET

   Stage 1 LOX Load

   Start of liquid oxygen loading in the first stage

3. T-35 minTue 9 Dec, 19:41 CET

   Prop Load

   Start of propelland loading

4. T-16 minTue 9 Dec, 20:00 CET

   Stage 2 LOX Load

   Start of liquid oxygen loading in the second stage

5. T-7 minTue 9 Dec, 20:09 CET

   Engine Chill

   Start of engine chilling

6. T-1 minTue 9 Dec, 20:15 CET

   Startup

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

7. T-1 minTue 9 Dec, 20:15 CET

   Tank Press

   Fuel tanks are pressurized to flight levels

8. T-45 sTue 9 Dec, 20:15 CET

   GO for Launch

   Launch director verifies go for launch

9. T-3 sTue 9 Dec, 20:16 CET

   Ignition

   Start of the engine ignition sequence

10. T-0Tue 9 Dec, 20:16 CET

    Liftoff

    First upwards movement of the rocket

11. T+1 min 12 sTue 9 Dec, 20:17 CET

    Max-Q

    Maximum dynamic pressure

12. T+2 min 12 sTue 9 Dec, 20:18 CET

    MECO

    Cut-off of the main engine

13. T+2 min 15 sTue 9 Dec, 20:18 CET

    Stage 2 Separation

    Separation of the second stage from the first

14. T+2 min 23 sTue 9 Dec, 20:18 CET

    SES-1

    First start of the second engine

15. T+2 min 28 sTue 9 Dec, 20:18 CET

    Booster Boostback Burn Startup

    Start of the booster boostback burn

16. T+3 min 4 sTue 9 Dec, 20:19 CET

    Fairing Separation

    Separation of the payload fairing

17. T+3 min 22 sTue 9 Dec, 20:19 CET

    Booster Boostback Burn Shutdown

    End of the booster boostback burn

18. T+6 min 44 sTue 9 Dec, 20:23 CET

    Entry Burn Startup

    Start of the atmospheric entry burn

19. T+7 min 4 sTue 9 Dec, 20:23 CET

    Entry Burn Shutdown

    End of the atmospheric entry burn

20. T+8 min 1 sTue 9 Dec, 20:24 CET

    Stage 1 Landing Burn

    Start of the first stage landing burn

21. T+8 min 17 sTue 9 Dec, 20:24 CET

    SECO-1

    First cut-off of the second engine

22. T+8 min 28 sTue 9 Dec, 20:24 CET

    Stage 1 Landing

    Landing of the first stage

Slip history

Changes recorded by Space Right Now

No changes since we started tracking on Sat 10 Oct 2026, 11:18 UTC.

Launch pad

Space Launch Complex 40

Cape Canaveral SFS, FL, USA (US)

Coordinates: 28.56194122, -80.57735736