December 22, 1961 at 19:12 UTC · Launch was a Partial Failure Atlas LV-3 Agena B — United States Air Force Space Launch Complex 3E, Vandenberg SFB, CA, USA The world's 142nd orbital launch attempt, and 49th of 1961. Data: Launch Library 2, The Space Devs. Image by NASA (NASA Image and Media Guidelines) via The Space Devs.