STPSat-6 is an advanced satellite for national security and science missions that delivers operational NUclear DETonation (NUDET) detection capabilities, high-bandwidth laser communications services, and new technology demonstrations in space domain awareness, weather, and NUDET detection. STPSat-6‘s nine payloads include the NNSA’s (National Nuclear Security Administration) Space and Atmospheric Burst Reporting System (SABRS), NASA’s Laser communications Relay Demonstration (LCRD), and seven Space Experiments Review Board (SERB) payloads that demonstrate cutting edge space technologies.

LDPE-1 is a medium class satellite bus that hosts six ports for connecting a wide array of ESPA-class prototype payloads. LDPE can insert separable space vehicles into geosynchronous (GEO) orbit or host dedicated payloads on the ring itself until test completion, in this mission the bus carries four experiments, which could be either hosted or deployable. The experiments have not yet been disclosed.