Mariner 2
Mariner 2 was launched on August 27, 1962 aboard an Atlas-Agena B rocket at Cape Canaveral Air Force Station.  The aim of the Mariner 2 mission was to fly-by the planet Venus and return information on the planet's atmosphere, magnetic field, charged particle environment, and mass.  Mariner 2 was at its closest to Venus, at a distance of 34,773 km, on December 14, 1962.  Orbital perihelion was on December 27, 105,464,560 km away.  The last radio signal from Mariner 2 was received on January 3, 1963.  Mariner 2 is still orbiting around the Sun today.