Samos 5Atlas LV-3A United States Air Force Launch Status Partial Failure Fri ยท Dec 22nd, 1961 2:12 PM EST Location Space Launch Complex 3E Vandenberg AFB, CA, USA 83 launches have been at this location. Rocket Atlas Agena B Length: 20.27 meters Diameter: 3.05 meters First Launched: December 4, 2020 The Atlas LV-3A was a largely unsuccessful configuration until it was given an Agena B upper stage. It was responsible for the launch of Mariner II to Venus and had one of the first engines that could be restarted in orbit. The Atlas Agena B rocket has been launched a total of 8 times with 3 successful and 5 failed launches. Agency United States Air Force Type: Government Abbreviation: USAF Administration: Founded: Launchers: Spacecraft: Country: USA View Rocket Launch Schedule