Starlink Group 13-4, USA 549 & USA 550
Launch Success
Liftoff Time (GMT)
18:35:09
Thursday July 31, 2025
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Mission Details
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Starlink Group 13-4
SpaceX launch of a batch of Starlink v2-mini satellites for their second-generation high-speed low earth orbit internet satellite constellation.
Manufacturer: SpaceX
Operator: SpaceX
Sun-Synchronous Orbit
19 Payloads
USA 549 & USA 550
SpaceX launched two classified payloads on this mission identified as USA 549 and USA 550 by the US government. It is believed these two satellites are based off the company's Starshield satellite bus derived from the Starlink satellite bus.
Sun-Synchronous Orbit
2 Payloads
Rocket
Agency
SpaceXPrice
$74.00 million
Rocket
Diameter: 3.7m
Height: 70m
Payload to Orbit
LEO: 22,000 kg
GTO: 8,300 kg
Liftoff Thrust
7,607 Kilonewtons
Fairing
Diameter: 5.2m
Height: 13m
Stages
2
Of Course I Still Love You
Launch Site
SE
SW
Launching
South
Stats
Falcon 9
512th
Mission
94th
Mission of 2025
SpaceX
537th
Mission
97th
Mission of 2025
2025
169th
Orbital launch attempt