Discoverer 17 was an American optical reconnaissance satellite. The mission was classed as a failure. Orbit was entered successfully however the film was separated before any camera operation leaving only 0.5m of film in the capsule. November 12, 1960 at 20:42 UTC · Launch Successful Thor DM-21 Agena-B — United States Air Force, to Low Earth Orbit Space Launch Complex 1E, Vandenberg SFB, CA, USA The world's 85th orbital launch attempt, and 31st of 1960. Data: Launch Library 2, The Space Devs. Image by USAF via The Space Devs.