For the record, SNAP-10A was also called SNAPSHOT.
SNAP-10A, was a small experimental nuclear fission reactor actually flown into space on april, 3rd 1965, launched on a polar orbit by an ATLAS Agena D rocket, from Vandenberg AFB.
This reactor worked 43 days, then failed; it was subsequently parked on a higher orbit. "In November1979, the vehicle began shedding, eventually losing 50 pieces of traceable debris." As of today, traceable debris are numbered above 60. (wiki)
Maybe the topic description could be changed to its regular program name: SNAP (Systems for Nuclear, Auxiliary Power).