Program: SSTS

The Space Surveillance and Tracking System (SSTS) was a mid 1990's programme to provide a space based acquisition, identification and tracking of incoming ballistic missiles and their re-entry vehicles. The satellites, to have been designated as LS-9A, would have carried long-wave infrared sensors.

The system proved too expensive to deploy in numbers sufficient to provide adequate coverage and the programme was cancelled. No primary contractor was selected.