SpaceXFalcon 9 Block 5Space Launch Complex 4E, Vandenberg SFB, CA, USA
Falcon 9 Block 5 | USSF-153
Countdown
No countdown — this launch time is not yet known to the minute.September 10, 2026 · 15:37 UTCAdd to calendar
Image: SpaceX
SpaceX's 727th launch · 108th this year · humanity's 7,388th orbital launch attempt
Current T-0 confirmed by official or reliable sources.
Window: Sep 10, 15:37 – Sep 10, 18:37 UTC
Flight preview
Airspace & maritime notices
Closure posted
- Sector San Diego, Exclusive Economic Zone (EEZ)/Space Operations/Hazardous Warning Area/Commercial (Hazardous)
Matched by proximity to the pad · Source
USSF-153
USSF-153 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
- B1081 · flight 27 · Autonomous Spaceport Drone Ship @ Of Course I Still Love You · last flew Falcon 9 Block 5 | Starlink Group 17-52 · zone record 222/230
Watch
- USSF-153 Mission — SpaceX
Flight timeline
- T−38MGO for Prop Load
- T−35MStage 1 LOX Load
- T−35MProp Load
- T−16MStage 2 LOX Load
- T−7MEngine Chill
- T−1MStartup
- T−1MTank Press
- T−45SGO for Launch
- T−3SIgnition
- T−0Liftoff
- T+1M7SMax-Q
- T+2M26SMECO
- T+2M29SStage 2 Separation
- T+2M35SSES-1
- T+2M55SFairing Separation
- T+6M6SEntry Burn Startup
- T+6M30SEntry Burn Shutdown
- T+8M4SStage 1 Landing Burn
- T+8M26SStage 1 Landing
Updates
Pad — Space Launch Complex 4E
Local pad time: Sep 10, 8:37 AM PDT
294 launches from this pad · 910 from Vandenberg SFB, CA, USA
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