Falcon 9 Launches SDA Tranche 2 Tracking Layer — 30 Sep 2026

A SpaceX Falcon 9 Block 5 rocket is scheduled to launch the U.S. Space Development Agency's Tranche 2 Tracking Layer A mission from Cape Canaveral Space Force Station, Florida, no earlier than 30 September 2026 at 00:00 UTC. The mission will place a batch of infrared missile-warning and missile-tracking satellites into low Earth orbit for the U.S. Space Force.

The Tracking Layer is the missile-detection element of the Space Development Agency's Proliferated Warfighter Space Architecture — a mesh network of small satellites designed to spot and follow hypersonic and ballistic missiles from orbit.

When is the launch?

The launch is targeted for 30 September 2026, 00:00 UTC, from an as-yet-unconfirmed pad at Cape Canaveral Space Force Station. The status is currently listed as TBD, meaning the date and time may shift as the mission approaches. Check the rocket launch schedule for the latest confirmed window.

Where is it launching from?

The mission lifts off from Cape Canaveral Space Force Station in Florida, SpaceX's busiest East Coast complex. Cape Canaveral hosts the majority of the company's national-security and commercial Falcon 9 flights.

What is the payload?

The payload is the Tranche 2 Tracking Layer A constellation for the Space Development Agency (SDA). The Tracking Layer carries wide-field-of-view infrared sensors tuned to detect the heat signatures of missiles in boost and glide phases, then hand off tracking data across the network.

Key facts about the SDA architecture:

• The Tracking Layer is one of two core layers, alongside the Transport Layer, in SDA's proliferated constellation.
• Tranche 2 follows the earlier Tranche 0 demonstration and Tranche 1 operational satellites already on orbit.
• SDA's full architecture is planned to grow into hundreds of satellites across successive tranches, refreshed on a roughly two-year cadence.
• Satellites operate in low Earth orbit, typically around 1,000 km altitude, to keep sensor-to-target range short and latency low.

SDA designs each tranche to add capability while spreading capability across many low-cost spacecraft, making the network resilient against attack.

What rocket is flying?

The Falcon 9 Block 5 is a two-stage, partially reusable orbital rocket built by SpaceX. It stands 70 meters tall and is powered by nine Merlin 1D engines on the first stage, generating roughly 7,600 kN of thrust at liftoff.

Falcon 9 is the most-flown rocket in the world, and its reusable first stage routinely returns to a landing zone or droneship for reflight. Individual Block 5 boosters have flown well over 20 times each, driving down the cost of high-cadence government and commercial launches.

Will the booster land?

SpaceX typically recovers the Falcon 9 first stage on missions to low Earth orbit. Recovery details for this flight — landing zone versus droneship — will be confirmed closer to launch.

How to watch live

SpaceX usually begins its webcast about 15 minutes before liftoff on its official channels. You can also follow the countdown and the ascent in real time on Cosmik:

• Track the launch on our live 3D solar system and satellite map.
• Browse upcoming missions on the launch schedule.
• Read the latest launch news for updates and confirmed timing.

Once deployed, the Tranche 2 satellites will join the growing network of objects you can follow on Cosmik. Learn how to track satellites to spot them after launch.

Why this mission matters

Tranche 2 marks the continued build-out of a resilient, distributed missile-tracking constellation in low Earth orbit — a shift away from a handful of large, expensive early-warning satellites toward many small, replaceable ones. Each successful launch expands global coverage and shortens the time to detect and track fast-moving threats.

Launch data for this mission is sourced from The Space Devs Launch Library.

Follow the launch on Cosmik

Don't miss liftoff — follow the Falcon 9 SDA Tranche 2 Tracking Layer A mission live on Cosmik, watch the deployed satellites orbit Earth in real time, and enable free launch alerts so you're notified the moment the countdown clock starts.