LowEarth
Mission record

Falcon 9 Block 5 | SDA Tranche 1 Transport Layer B

Falcon 9· Space Launch Complex 4E· Success
Trajectory & orbital insertion · playback
Orbits are real (live SGP4) — press play to sweep the deployed group forward along their planes. Ascent path is a representation; true ascent telemetry isn’t public.
Provider
SpaceX
Provider type
Commercial
Orbit
PO
Mission type
Government/Top Secret
Launch site
United States of America
Date
Wed, 10 Sep 2025 14:12:11 GMT
Orbital launch #
#7058 ever
Go probability
100%

Mission

Tranche 1 Transport Layer B is one of six missions by the United States Space Force Space Development Agency (SDA) for the Proliferated Warfighter Space Architecture (PWSA) Tranche 1 Transport Layer constellation, which will provide assured, resilient, low-latency military data and connectivity worldwide to the full range of warfighter platforms from Low Earth Orbit satellites. The constellation will be interconnected with Optical Inter-Satellite Links (OISLs) which have significantly increased performance over existing radio frequency crosslinks. It is expected to operate over Ka band, have stereo coverage and be dynamically networked for simpler hand-offs, greater bandwidth and fault tolerance. This launch carries 21 satellites manufactured by York Space Systems.

Deployed payloads · 21
▶ Watch the launch
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