Program Lunar Orbiter Breitling Orbiter 3 Mars Climate Orbiter Mars Orbiter Mission Neptune Orbiter Mars Reconnaissance Orbiter Europa Orbiter Lunar Orbiter 1 Lunar Orbiter 4 Jupiter Ganymede Orbiter Lunar Orbiter 3 Lunar Orbiter 5 Lunar Orbiter 2 Jupiter Europa Orbiter Lunar Reconnaissance Orbiter Pioneer Venus Orbiter Mars Telecommunications Orbiter Jupiter Magnetospheric Orbiter Next Mars Orbiter Orbiter Boom Sensor System Jupiter Icy Moons Orbiter Jovian Europa Orbiter Pengorbit (wahana antariksa) Korea Pathfinder Lunar Orbiter Pengorbit dan probe Uranus Wahana antariksa