SDA Tranche 1 Transport Layer A
T-15d 15h 41m until launch
Track Live on 3D Globe →| Rocket | Falcon 9 |
|---|---|
| Provider | SpaceX |
| Target Orbit | Polar Orbit |
| Status | To Be Determined |
| Launch Time | Wed, 30 Sep 2026 00:00:00 UTC |
| Launch Pad | Space Launch Complex 4E — Vandenberg SFB, CA, USA |
Mission
Tranche 1 Transport Layer A 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 Northrop Grumman.
ObjectTracer tracks every rocket launch worldwide with real-time 3D globe visualization. View the launch pad location, track the rocket's trajectory live, and explore mission details.
How to track SDA Tranche 1 Transport Layer A
- Open the live 3D globe — the launch pad (Space Launch Complex 4E — Vandenberg SFB, CA, USA) is pinned at its real coordinates.
- Watch the live countdown to lift-off and the planned ascent path.
- Explore SpaceX's other missions and the global launch schedule.
Frequently asked questions
When does SDA Tranche 1 Transport Layer A launch?
The SDA Tranche 1 Transport Layer A launch window opens Wed, 30 Sep 2026 00:00:00 UTC from Space Launch Complex 4E — Vandenberg SFB, CA, USA. ObjectTracer shows a live countdown to lift-off.
What rocket is launching SDA Tranche 1 Transport Layer A?
SDA Tranche 1 Transport Layer A is set to fly on a Falcon 9 operated by SpaceX, targeting Polar Orbit.
How can I track SDA Tranche 1 Transport Layer A live?
Open ObjectTracer's 3D globe to see the launch pad location, a real-time countdown and the rocket's trajectory. Tracking begins automatically near lift-off.
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