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SpaceX

Starlink Group 11-20

Success

Falcon 9 Block 5

T-minus to liftoff

HOURS

MINUTES

SECONDS

Monday September 29 2025, 02:04:50 UTC

StatusSuccess

Scrub riskLOW

Go95%

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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General trajectory

Space Launch Complex 4E

Vandenberg SFB, CA, USA

Launching

South

197° · SSW

34.632, -120.611

Orbital elements (TLE)

Orbit

Apogee261 km

Perigee246 km

Period89.6 min

Inclination97.29°

Launch heading 197° · SSW from Starlink 17-20.

OrbitStarlink 17-20› conelow

1 70012U 26016A 26025.77269676 .00033015 00000-0 41372-4 0 9993

2 70012 97.2906 083.6243 0011020 270.6608 105.6107 16.07501555 09

Pre-launch TLEs from Dillon's Space Page. Estimated before flight — the real orbit is confirmed post-launch.

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Mission

A batch of 28 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.

Reusable Hardware

All boosters →

First Stage · Flight-provenB1063

active28th flight

Flights35

Landings35/35100%

Fastest turn28d 15h

Recovered · ASDS · OCISLY· 574 km downrange

33d 7h since last flight

Notable launches include Sentinel-6 and Dart.

Previous flights · 34

Q's read

Weather & scrubLOW risk

Weather Go95%Wind8 m/sGusts10 m/sCloud64%Temp16°C

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

max cloud-top 6254 m above freezing 3627 m (74% cover in 10 nmi) · no GLM flashes within 25 nmi / 30 min, likely cirrus / stratiform ice rather than cumulus · max-top 6254 m, mean 5110 m, 74% cover, freezing 3627 m · 7.1 ≥ 6 ft significant wave height

Jellyfish potentialMap & details →

Vivid

Launch Timeline

Countdown

T-00:38:00

GO for Prop Load

T-00:35:00

Prop Load

T-00:35:00

Stage 1 LOX 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+00:01:12

Max-Q

T+00:02:25

MECO

T+00:02:28

Stage 2 Separation

T+00:02:35

SES-1

T+00:02:56

Fairing Separation

T+00:06:06

Entry Burn Startup

T+00:06:32

Entry Burn Shutdown

T+00:08:01

Stage 1 Landing Burn

T+00:08:25

Stage 1 Landing

T+00:08:39

SECO-1

T+00:53:19

SES-2

T+00:53:20

SECO-2

T+01:00:11

Starlink Deployment

Quick facts

VehicleFalcon 9 Block 5

OrbitLow Earth Orbit

PadSpace Launch Complex 4E

SiteVandenberg SFB, CA, USA

WindowSunday September 28 2025, 23:32:00 UTC→Monday September 29 2025, 03:32:00 UTC

Vehicle

FamilyFalcon

Height70 m

Diameter3.7 m

Stages2

ReusableYes

LEO capacity22,800 kg

Track record606/607 successful

Landings593/598