ELINT/SIGINT satellite using a tube-type F1 receiver with S-band horn antennas. June 29, 1963 at 22:30 UTC · Launch Successful Thor SLV-2A Agena B — United States Air Force, to Low Earth Orbit Space Launch Complex 1E, Vandenberg SFB, CA, USA The world's 260th orbital launch attempt, and 36th of 1963. Data: Launch Library 2, The Space Devs. Image via The Space Devs.