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SpaceX

Starlink Group 11-18

Success

Falcon 9 Block 5

T-minus to liftoff

HOURS

MINUTES

SECONDS

Saturday May 31 2025, 20:10:00 UTC

StatusSuccess

Scrub riskLOW

Go94%

VehicleFalcon 9 Block 5

OrbitLow Earth Orbit

PadSpace Launch Complex 4E

Launch CodexDossier

Every source for this mission in one place — news, social, references, notes & the exact timeline.

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Trajectory unknown

Space Launch Complex 4E

Vandenberg SFB, CA, USA

34.632, -120.611

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Mission

A batch of 27 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.

Reusable Hardware

All boosters →

First Stage · Flight-provenB1071

active25th flight

Flights35

Landings35/35100%

Fastest turn19d 16h

Recovered · ASDS · OCISLY· 574 km downrange

49d 7h since last flight

Falcon 9 Block 5 booster first used for the NROL-87 mission.

Previous flights · 34

Q's read

Weather & scrubLOW risk

Weather Go94%Wind5 m/sGusts6 m/sCloud73%Temp17°C

Limiting rule: No flight through cumulus cloud with top at or above the freezing level.

max cloud-top 6844 m above freezing 4635 m (53% cover in 10 nmi) · no GLM flashes within 25 nmi / 30 min, likely cirrus / stratiform ice rather than cumulus · max-top 6844 m, mean 4849 m, 53% cover, freezing 4635 m · 6.7 ≥ 6 ft significant wave height

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

Startup

T-00:01:00

Tank Press

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+00:02:25

MECO

T+00:02:28

Stage 2 Separation

T+00:02:36

SES-1

T+00:02:56

Fairing Separation

T+00:06:02

Entry Burn Startup

T+00:06:28

Entry Burn Shutdown

T+00:07:48

Stage 1 Landing Burn

T+00:08:11

Stage 1 Landing

T+00:08:40

SECO-1

T+00:52:57

SES-2

T+00:52:59

SECO-2

T+00:59:51

Starlink Deployment

Quick facts

VehicleFalcon 9 Block 5

OrbitLow Earth Orbit

PadSpace Launch Complex 4E

SiteVandenberg SFB, CA, USA

WindowSaturday May 31 2025, 20:10:00 UTC→Saturday May 31 2025, 23:51:10 UTC

Vehicle

FamilyFalcon

Height70 m

Diameter3.7 m

Stages2

ReusableYes

LEO capacity22,800 kg

Track record606/607 successful

Landings593/598