SDA Tranche 1 Tracking Layer B

A ULA Vulcan from Vandenberg will loft one Space Development Agency Tranche 1 Tracking Layer plane into polar orbit, among the first PWSA infrared missile-warning missions. L3Harris and Northrop Grumman each build 14 Tracking satellites across two seven-satellite planes; this flight is one of ULA's two Western-range Tracking Layer NSSL assignments.

Status

Date TBD

Target orbit

PO

Polar orbit

Date and time

2026

Rocket

Vulcan

Operator

United Launch Alliance

Launch site

Space Launch Complex 3E, Vandenberg SFB, CA, USA

Payload

Government/Top Secret