by SpaceX USA

SDA Tranche 1 Tracking Layer E

Planned 2027 H1

One of five launches deploying the Space Development Agency's Tranche 1 Tracking Layer. The satellites, built by L3Harris and Northrop Grumman, carry wide field-of-view infrared sensors for persistent warning, tracking, and targeting of advanced missile threats, including hypersonic glide vehicles.

Launch part of the National Security Space Launch Phase 2 contract awarded in 2022.

aboard Falcon 9 B5 into LEO

Payload

T1TR-E x 7

Early warning

last updated Oct 5, 2026