Falcon 9 Block 5 | USSF-124

2 satellites, one by L3Harris and the other by Northrop Grumman, will be launched as the Hypersonic and Ballistic Tracking Space Sensor (HBTSS) mission for the US Missile Defense Agency. These satellites have improved sensitivity to detect and track hypersonic missiles with fainter signatures. 4 SDA Tranche 0 Tracking Layer missile warning satellites by L3Harris will also be on board.

Government/Top Secret · Low Earth Orbit (LEO)

• B1078 · flight 7 · Return to Launch Site @ Landing Zone 2 · landed ✓ · last flew Falcon 9 Block 5 | Starlink Group 6-31 · zone record 17/17

• SpaceX USSF-124 — SPACE AFFAIRS
• USSF-124 Mission — SpaceX
• SpaceX Falcon 9 Launches USSF-124 for the United States Space Force — NASASpaceflight
• Watch Live: SpaceX Falcon 9 rocket launches missile warning satellites from Cape Canaveral — Spaceflight Now

1. T−38MGO for Prop Load
2. T−35MStage 1 LOX Load
3. T−35MProp Load
4. T−16MStage 2 LOX Load
5. T−7MEngine Chill
6. T−1MStartup
7. T−1MTank Press
8. T−45SGO for Launch
9. T−3SIgnition
10. P0DLiftoff
11. T+1M12SMax-Q
12. T+2M16SMECO
13. T+2M19SStage 2 Separation
14. T+2M27SSES-1
15. T+2M32SBooster Boostback Burn Startup
16. T+3M8SFairing Separation
17. T+3M26SBooster Boostback Burn Shutdown
18. T+6M16SEntry Burn Startup
19. T+6M34SEntry Burn Shutdown
20. T+7M32SStage 1 Landing Burn
21. T+8M1SStage 1 Landing

• Launch success.

  Cosmic_Penguin · 2/15/2024 · source

• Liftoff.

  Cosmic_Penguin · 2/14/2024 · source

• Livestream has started

  LL2 · 2/14/2024 · source

• GO for launch.

  Cosmic_Penguin · 2/14/2024 · source

• Weather > 95% GO

  hitura-nobad · 2/13/2024 · source

• Tweaked T-0 via launch site NOTAMs.

  Cosmic_Penguin · 2/9/2024 · source

• Added launch window.

  Cosmic_Penguin · 2/8/2024 · source

• Reportedly targeting February 14

  Nosu · 2/8/2024 · source

• Targeting February

  Nosu · 2/1/2024 · source

• NET early 2024.

  Cosmic_Penguin · 12/9/2023 · source