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SpaceX

Starlink Group 17-53

Success

Falcon 9 Block 5

T-minus to liftoff

HOURS

MINUTES

SECONDS

Tuesday August 4 2026, 17:05:03 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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Orbital elements (TLE)

Orbit

Apogee271 km

Perigee257 km

Period89.8 min

Inclination97.29°

Launch heading 197° · SSW from Starlink 17-53.

OrbitStarlink 17-53› conehigh

1 70159U 26177A 26216.75453704 .00000000 00000-0 00000-0 0 9997

2 70159 97.2918 265.4232 0010664 274.9443 098.5343 16.03730773 03

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 24 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.

Reusable Hardware

All boosters →

First Stage · Flight-provenB1063

active34th flight

Flights35

Landings35/35100%

Fastest turn28d 15h

Recovered · ASDS · OCISLY· 574 km downrange

44d since last flight

Notable launches include Sentinel-6 and Dart.

Q's read

Weather & scrubLOW risk

Weather Go94%Wind3 m/sGusts4 m/sCloud66%Temp15°C

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

max cloud-top 8791 m above freezing 4667 m (100% cover in 10 nmi) · no GLM flashes within 25 nmi / 30 min, likely cirrus / stratiform ice rather than cumulus · max-top 8791 m, mean 7034 m, 100% cover, freezing 4667 m

Hazards (3)

A0999/26 NOTAMN Q) NTTT/QRDCA/IV/BO/W/000/999/2742S15534W160 A) NTTT B) 2608011543 C) 2608072029 D) 01-07 1543-2029 E) TEMPORARY DANGER AREA DUE TO SPACE DEBRIS RETURN OF SPACEX STARLINK 17-53 IN TAHITI FIR WITHIN AN AREA BOUNDED BY FOLLOWING POINTS : 3000S 15700W - 2540S 15700W - 2523S 15656W - 2603S 15324W - 3000S 15408W - 3000S 15700W THIS ACTIVITY ALSO IMPACTS THE FOLLOWING FIR: NZZO. THE FRENCH VERSION OF THIS NOTAM IS C1797/26 F) SFC G) UNL
A1010/26 NOTAMN Q) NTTT/QRDCA/IV/BO/W/000/999/2742S15534W160 A) NTTT B) 2608021543 C) 2608072029 D) 02-07 1543-2029 E) TEMPORARY DANGER AREA DUE TO SPACE DEBRIS RETURN OF SPACEX STARLINK 17-53 IN TAHITI FIR WITHIN AN AREA BOUNDED BY FOLLOWING POINTS : 3000S 15700W - 2540S 15700W - 2523S 15656W - 2603S 15324W - 3000S 15408W - 3000S 15700W THIS ACTIVITY ALSO IMPACTS THE FOLLOWING FIR: NZZO. THE FRENCH VERSION OF THIS NOTAM IS C1811/26. F) SFC G) UNL
HYDROPAC 2127/26. SOUTH PACIFIC. 1. HAZARDOUS OPERATIONS, SPACE DEBRIS 1543Z TO 2029Z DAILY 01 THRU 07 AUG IN AREA BOUND BY 25-23.00S 156-56.00W, 26-03.00S 153-24.00W, 43-04.00S 157-03.00W, 59-49.00S 163-34.00W, 59-13.00S 168-58.00W, 42-28.00S 161-17.00W. 2. CANCEL THIS MSG 072129Z AUG 26.

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

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+00:01:08

Max-Q

T+00:02:25

MECO

T+00:02:29

Stage 2 Separation

T+00:02:36

SES-1

T+00:02:57

Fairing Separation

T+00:05:59

Entry Burn Startup

T+00:06:22

Entry Burn Shutdown

T+00:07:57

Stage 1 Landing Burn

T+00:08:19

Stage 1 Landing

T+00:08:40

SECO-1

T+00:52:24

SES-2

T+00:52:25

SECO-2

T+01:01:16

Starlink Deployment

Quick facts

VehicleFalcon 9 Block 5

OrbitLow Earth Orbit

PadSpace Launch Complex 4E

SiteVandenberg SFB, CA, USA

WindowTuesday August 4 2026, 14:00:00 UTC→Tuesday August 4 2026, 18:00:00 UTC

Vehicle

FamilyFalcon

Height70 m

Diameter3.7 m

Stages2

ReusableYes

LEO capacity22,800 kg

Track record628/629 successful

Landings614/619