Jumpseat were American military intelligence (NRO) satellites launched in the 1970s and early '80s into Molniya-type orbits. These orbits are very similar to those of SDS (Satellite Data System) classified communications satellites, and identification of a launch in either series as SDS or Jumpseat may differ. Jumpseat was associated with DSP. Its successor, known as Advanced Jumpseat, was associated with SBIRS.
Related categories MILITARY RECONNAISSANCE AND SURVEILLANCE
SATELLITES AND SPACE PROBES
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