NSTP-Sat

NSTP-Sat (bus without payload) [NASA]

NSTP-Sat (NASA Science/Technology Platform Satellite) is a proposed NASA mission based on a donated satellite bus, likely from NRO's Quasar (SDS-2) relay satellite program.

The donated spacecraft is a Hughes (Boeing) built spin stabilized bus, apparently without the original relay payload.

NASA is currently solicits ideas for payloads, including remote sensing instruments and technology demonstrations. The NSTP-Sat could be used for missions to low earth orbit, geostationary equatorial orbit, medium Earth orbit, Earth-Moon L1, or lunar orbit in the 2021 timeframe.

The satellite could be launched on Atlas-5, Falcon-9 or SLS missions.