The Transit-O series of satellites that closely followed the design of Transit 5C-1 were also called “Oscars” (Oscar is the phonetic alphabet for “O”, i. e., operational). They were also called NNS (Navy Navigation Satellite) or shortened NavSat.
Polar OrbitThe 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.
Elliptical OrbitPioneer A to E (Pioneer 6 to 9 after launch) were a series of five solar-orbiting, spin-stabilized, solar-cell and battery-powered satellites designed to obtain measurements of interplanetary phenomena from widely separated points in space on a continuing basis.
Heliocentric N/AGemini 6A was the fifth crewed mission of NASA's Project Gemini. The mission was commanded by Command Pilot Walter M. Schirra, Jr. and Pilot Thomas P. Stafford. The mission achieved the first crewed rendezvous with the Gemini 7 spacecraft. The mission began on December 15, 1965, 13:37:26 UTC and ended on December 16, 1965, 15:28:50 UTC.
Low Earth OrbitThe FR 1 (France 1) spacecraft was a small spacecraft carrying two experiments. One was designed to observe VLF signals from earth-based transmitters, and the other was an electron density probe measuring electron concentration at the satellite.
Low Earth Orbit