KH-5 (Keyhole 5, codenamed Argon) was the area survey component of the Corona program. October 29, 1963 at 21:19 UTC · Launch Successful Thor SLV-2A Agena D — United States Air Force, to Low Earth Orbit Space Launch Complex 1W, Vandenberg SFB, CA, USA The world's 278th orbital launch attempt, and 54th of 1963. Data: Launch Library 2, The Space Devs. Image via The Space Devs.