Cygnus CRS-2 NG-23 (S.S. William “Willie” C. McCool)

Mission

Cygnus CRS-2 NG-23 (S.S. William “Willie” C. McCool) on Falcon 9 Block 5. Sun 14 Sept 2025, 22:11:48 UTC. Reported outcome: Success. Launch site: Space Launch Complex 40. Source: Launch Library 2.

This is the 23rd flight of the Northrop Grumman's uncrewed resupply spacecraft Cygnus and its 22nd flight to the International Space Station under the Commercial Resupply Services contract with NASA.

Mission type

Resupply

Orbit

Low Earth Orbit

Programmes: Commercial Resupply Services, International Space Station

Rocket file imagery

Launch timeline

Times are relative to liftoff.

1. T-38 minSun 14 Sept, 23:33 CEST

   GO for Prop Load

   Launch director verifies go for propellant load

2. T-35 minSun 14 Sept, 23:36 CEST

   Prop Load

   Start of propelland loading

3. T-35 minSun 14 Sept, 23:36 CEST

   Stage 1 LOX Load

   Start of liquid oxygen loading in the first stage

4. T-16 minSun 14 Sept, 23:55 CEST

   Stage 2 LOX Load

   Start of liquid oxygen loading in the second stage

5. T-7 minMon 15 Sept, 00:04 CEST

   Engine Chill

   Start of engine chilling

6. T-1 minMon 15 Sept, 00:10 CEST

   Startup

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

7. T-1 minMon 15 Sept, 00:10 CEST

   Tank Press

   Fuel tanks are pressurized to flight levels

8. T-45 sMon 15 Sept, 00:11 CEST

   GO for Launch

   Launch director verifies go for launch

9. T-3 sMon 15 Sept, 00:11 CEST

   Ignition

   Start of the engine ignition sequence

10. T-0Mon 15 Sept, 00:11 CEST

    Liftoff

    First upwards movement of the rocket

11. T+1 min 12 sMon 15 Sept, 00:13 CEST

    Max-Q

    Maximum dynamic pressure

12. T+2 min 12 sMon 15 Sept, 00:14 CEST

    MECO

    Cut-off of the main engine

13. T+2 min 16 sMon 15 Sept, 00:14 CEST

    Stage 2 Separation

    Separation of the second stage from the first

14. T+2 min 24 sMon 15 Sept, 00:14 CEST

    SES-1

    First start of the second engine

15. T+2 min 29 sMon 15 Sept, 00:14 CEST

    Booster Boostback Burn Startup

    Start of the booster boostback burn

16. T+2 min 52 sMon 15 Sept, 00:14 CEST

    Fairing Separation

    Separation of the payload fairing

17. T+3 min 21 sMon 15 Sept, 00:15 CEST

    Booster Boostback Burn Shutdown

    End of the booster boostback burn

18. T+6 min 10 sMon 15 Sept, 00:17 CEST

    Entry Burn Startup

    Start of the atmospheric entry burn

19. T+6 min 30 sMon 15 Sept, 00:18 CEST

    Entry Burn Shutdown

    End of the atmospheric entry burn

20. T+7 min 21 sMon 15 Sept, 00:19 CEST

    Stage 1 Landing Burn

    Start of the first stage landing burn

21. T+7 min 54 sMon 15 Sept, 00:19 CEST

    Stage 1 Landing

    Landing of the first stage

22. T+8 min 31 sMon 15 Sept, 00:20 CEST

    SECO-1

    First cut-off of the second engine

23. T+14 min 33 sMon 15 Sept, 00:26 CEST

    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, 11:17 UTC.

Launch pad

Space Launch Complex 40

Cape Canaveral SFS, FL, USA (US)

Coordinates: 28.56194122, -80.57735736