SpaceXFalcon 9 Block 5Space Launch Complex 4E, Vandenberg SFB, CA, USA
USSF-153
Launched
September 10, 2026 · 15:42 UTC
Image: SpaceX
Summary
SpaceX’s Falcon 9 Block 5 launched USSF-153, a classified mission for the United States Space Force, successfully delivering its payloads to target orbit from Vandenberg’s SLC-4E.
- Watch
- SpaceX USSF-153The Space Devs
- Live: SpaceX Falcon 9 rocket launches secretive U.S. Space Force mission from CaliforniaSpaceflight Now
- USSF-153 MissionSpaceX
- Vehicle
- Falcon 9 Block 5 · SpaceX
- Booster
- B1081 · flight 27 · Autonomous Spaceport Drone Ship at Of Course I Still Love You · landed230/238 landed here · 40 days after its previous flight, Starlink Group 17-52 · 574 km downrange
- Mission
- Government/Top Secret · Low Earth Orbit (LEO)for USSF
- Milestone
- 630th Falcon 9 Block 5 flight · 104th this yearSpaceX's 727th launch108th this yearhumanity's 7,387th orbital launch attempt214th orbital launch attempt this year
Flight preview
Simulate in Flight ClubOrbit: representative
Target site default for this orbit type. Not a catalogued object; this panel switches to the tracked orbit once the object is catalogued. Ascent drawn from padside's representative profile. Booster return drawn from padside's representative arc.
Flight timeline
- T−38MGO for Prop Load
- T−35MProp Load
- T−35MStage 1 LOX 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
About this launch
USSF-153 launched on a SpaceX Falcon 9 Block 5 from Space Launch Complex 4E, Vandenberg SFB, CA, USA on September 10, 2026 at 15:42 UTC. The launch window ran from 15:37 to 18:37 UTC. It was SpaceX's 727th launch, 108th this year and humanity's 7,387th orbital launch attempt. It was the 630th Falcon 9 Block 5 flight and the 104th this year. Booster B1081 flew for the 27th time and landed at Of Course I Still Love You. The payload was bound for low Earth orbit (LEO).
USSF-153 is a classified mission for the United States Space Force. It is possibly a batch of classified LEO satellites based on SpaceX’s Starshield satellite bus, based on locations of rocket stage drop zones being exact fits with previous Starlink Group 15 launches.
News
Live coverage: SpaceX to launch classified payload for the U.S. Space ForceThe mission, dubbed USSF-153 mission, will launch an undisclosed number of satellites for the U.S. Space Force. Liftoff from pad 4E at Vandenberg Space Force Base is scheduled during a three-hour window that opens at 8:37 a.m. PDT (1137 a.m. EDT / 1537 UTC).
Launch Preview: Soyuz, CZ-8A, and Falcon 9 to launch from sites around the worldFive orbital launches are expected this week. Two Falcon 9s are expected to launch from…
Airspace and maritime notices
1 notice filed by the US Coast Guard
- Sector San Diego, Exclusive Economic Zone (EEZ)/Space Operations/Hazardous Warning Area/Commercial (Hazardous) · Expired
Matched by proximity to the pad · Source
Pad
Space Launch Complex 4E, Vandenberg SFB, CA, USA
296th launch from Space Launch Complex 4E, 58th this year · 912th from Vandenberg SFB, CA, USA
Local pad time at liftoff: Sep 10, 8:42 AM PDT, in daylight
303 launches from this pad · 919 from Vandenberg SFB, CA, USA
4 days 1 hour after the previous launch from this pad
Updates
Launch success.
Show 7 earlier updates
Payload separation.
Cosmic_Penguin · 9/10/2026 · source
Liftoff.
Cosmic_Penguin · 9/10/2026 · source
Unofficial Re-stream by SPACE AFFAIRS has started
LL2 · 9/10/2026 · source
Now targeting Sep 10 at 15:42:30 UTC
hitura-nobad · 9/10/2026 · source
Now targeting Sep 10 at 15:42 UTC
Cosmic_Penguin · 9/10/2026 · source
GO for launch.
Cosmic_Penguin · 9/2/2026 · source
Added launch.
Cosmic_Penguin · 9/1/2026 · source
Questions
When did USSF-153 launch?
USSF-153 launched on September 10, 2026 at 15:42 UTC. The launch window ran from 15:37 to 18:37 UTC.
Where can I watch USSF-153?
Coverage: SpaceX USSF-153; Live: SpaceX Falcon 9 rocket launches secretive U.S. Space Force mission from California; USSF-153 Mission. Watch the replay
What rocket launched USSF-153?
Falcon 9 Block 5, flown by SpaceX. Falcon 9 Block 5 spec sheet
Where did USSF-153 launch from?
Space Launch Complex 4E, Vandenberg SFB, CA, USA. Liftoff was Sep 10, 8:42 AM PDT local time at the pad.
Did the booster land?
Booster B1081 flew for the 27th time and landed at Of Course I Still Love You.
What orbit was USSF-153 going to?
Low Earth Orbit (LEO), a government/top secret mission.