Padside

SpaceXFalcon 9 Block 5Space Launch Complex 4E, Vandenberg SFB, CA, USA

Falcon 9 Block 5 | USSF-366

Countdown

No countdown — this launch time is not yet known to the minute.

August 16, 2026 · 01:50 UTCAdd to calendar

Launch SuccessfulWeather 90% go

Image: SpaceX

SpaceX's 718th launch · 99th this year · humanity's 7,366th orbital launch attempt

The launch vehicle successfully inserted its payload(s) into the target orbit(s).

Window: Aug 15, 21:52 – Aug 16, 01:52 UTC

Flight preview

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Airspace & maritime notices

  • Sector San Diego, Exclusive Economic Zone (EEZ)/Space Operations/Hazardous Warning Area/Commercial (Hazardous) · Expired

    Matched by proximity to the pad · Source

USSF-366

USSF-366 is a classified mission for the United States Space Force. It is possibly a batch of classified LEO satellites for a US government entity based on SpaceX’s Starshield satellite bus, based on locations of rocket stage drop zones being exact fits with previous Starlink Group 15 launches.

Government/Top Secret · Low Earth Orbit (LEO)

Booster

  • B1088 · flight 18 · Autonomous Spaceport Drone Ship @ Of Course I Still Love You · landed · last flew Falcon 9 Block 5 | Starlink Group 17-40 · zone record 222/230

Watch

Flight timeline

  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. T−0Liftoff
  11. T+1M7SMax-Q
  12. T+2M25SMECO
  13. T+2M29SStage 2 Separation
  14. T+2M36SSES-1
  15. T+2M58SFairing Separation
  16. T+6M1SEntry Burn Startup
  17. T+6M25SEntry Burn Shutdown
  18. T+7M58SStage 1 Landing Burn
  19. T+8M20SStage 1 Landing

Updates

  • Launch success.

    Cosmic_Penguin · 8/16/2026 · source

  • Spacecraft separation.

    Cosmic_Penguin · 8/16/2026 · source

  • Liftoff.

    Cosmic_Penguin · 8/16/2026 · source

  • Unofficial Re-stream by SPACE AFFAIRS has started

    LL2 · 8/16/2026 · source

  • Now targeting Aug 16 at 01:50 UTC

    Cosmic_Penguin · 8/15/2026 · source

  • Now targeting Aug 15 at 23:47 UTC

    Cosmic_Penguin · 8/15/2026 · source

  • Now targeting Aug 15 at 21:54 UTC

    hitura-nobad · 8/15/2026 · source

  • GO for launch.

    Cosmic_Penguin · 8/10/2026 · source

  • Added launch per NOTAMs; Payload identities very uncertain.

    Cosmic_Penguin · 8/6/2026 · source

Pad — Space Launch Complex 4E

Local pad time: Aug 15, 6:50 PM PDT

293 launches from this pad · 909 from Vandenberg SFB, CA, USA

Map of Space Launch Complex 4EOpen in maps