KH-5 (Keyhole 5, codenamed Argon) was the area survey component of the Corona program. May 15, 1962 at 19:36 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 165th orbital launch attempt, and 23rd of 1962. Data: Launch Library 2, The Space Devs. Image by USAF via The Space Devs.