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SpaceX

USSF-153

Falcon 9 Block 5

T-minus to liftoff

HOURS

MINUTES

SECONDS

Thursday September 10 2026, 15:37:00 UTC

StatusGo

Scrub riskLOW

Go94%

VehicleFalcon 9 Block 5

OrbitLow Earth Orbit

PadSpace Launch Complex 4E

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Acquiring satellite view…

Trajectory unknown

2 hazard areas

Space Launch Complex 4E

Vandenberg SFB, CA, USA

34.632, -120.611

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Mission

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.

Reusable Hardware

All boosters →

First Stage · Flight-provenB1081

active27th flight

Flights26

Landings26/26100%

Fastest turn24d 19h

Targeting ASDS · OCISLY· 574 km downrange

40d 12h since last flight

Launched Crew-7 on its first flight.

Previous flights · 26

Q's read

Weather & scrubLOW risk

Weather Go94%Wind8 m/sGusts10 m/sCloud67%Temp18°C

Limiting rule: Droneship recovery upper limit on sea state.

7.7 ≥ 6 ft significant wave height

Hazards (1)

HYDROPAC 2517/26. SOUTH PACIFIC. 1. HAZARDOUS OPERATIONS, SPACE DEBRIS 0001Z TO 2330Z DAILY 07 THRU 19 SEP IN AREAS BOUND BY: A. 36-30.00S 177-30.00W, 34-15.00S 171-30.00W, 35-45.00S 170-30.00W, 38-00.00S 176-45.00W. B. 32-30.00S 165-00.00W, 30-30.00S 160-00.00W, 32-00.00S 159-00.00W, 34-00.00S 164-00.00W. 2. CANCEL THIS MSG 200030Z SEP 26.

Launch Timeline

Countdown

T-00:38:00

GO for Prop Load

T-00:35:00

Stage 1 LOX Load

T-00:35:00

Prop Load

T-00:16:00

Stage 2 LOX Load

T-00:07:00

Engine Chill

T-00:01:00

Tank Press

T-00:01:00

Startup

T-00:00:45

GO for Launch

T-00:00:03

Ignition

In-flight

T+00:00:00

Liftoff

T+00:01:07

Max-Q

T+00:02:26

MECO

T+00:02:29

Stage 2 Separation

T+00:02:35

SES-1

T+00:02:55

Fairing Separation

T+00:06:06

Entry Burn Startup

T+00:06:30

Entry Burn Shutdown

T+00:08:04

Stage 1 Landing Burn

T+00:08:26

Stage 1 Landing

Quick facts

VehicleFalcon 9 Block 5

OrbitLow Earth Orbit

PadSpace Launch Complex 4E

SiteVandenberg SFB, CA, USA

WindowThursday September 10 2026, 15:37:00 UTC→Thursday September 10 2026, 18:37:00 UTC

Vehicle

FamilyFalcon

Height70 m

Diameter3.7 m

Stages2

ReusableYes

LEO capacity22,800 kg

Track record627/628 successful

Landings613/618