The OV2 (Orbiting Vehicle 2) series satellites were originally built for project ARENTS (Advanced Research Environmental Test Satellite), which was intended to obtain supporting data for the Vela program. After the cancellation of the ARENTS program, the already built hardware was reused for OV2, a low-cost series of experimental satellites, which were to be launched for free on Titan-3C test flights to very different orbits. October 15, 1965 at 17:23 UTC · Launch Successful Titan IIIC — United States Air Force, to Low Earth Orbit Space Launch Complex 40, Cape Canaveral SFS, FL, USA The world's 485th orbital launch attempt, and 92nd of 1965. Data: Launch Library 2, The Space Devs. Image by U.S. DoD (Department of Defense Image Use Policy) via The Space Devs.