The KH-4A (Keyhole-4A) was the fifth optical reconnaissance satellite version in the Corona-program. July 19, 1965 at 22:01 UTC · Launch Successful Thor SLV-2A Agena D — United States Air Force, to Low Earth Orbit Space Launch Complex 3W, Vandenberg SFB, CA, USA The world's 458th orbital launch attempt, and 65th of 1965. Data: Launch Library 2, The Space Devs. Image via The Space Devs.