| Discoverer 30 | |
| Mission Type: | Optical reconnaissance |
| Operator: | US Air Force/NRO |
| Harvard Designation: | 1961 Omega 1 |
| Mission Duration: | 2 days |
| Spacecraft Type: | KH-3 Corona| spacecraft_bus = Agena-B| manufacturer = Lockheed| launch_mass = | launch_date = UTC| launch_rocket = Thor DM-21 Agena-B 310| launch_site = Vandenberg LC-75-3-5 | decay_date = | landing_date = | landing_site = | orbit_epoch = | orbit_reference = Geocentric| orbit_regime = Low Earth| orbit_periapsis = 231km (144miles)| orbit_apoapsis = 484km (301miles)| orbit_inclination = 82.6 degrees| orbit_period = 91.7 minutes| apsis = gee}}Discoverer 30, also known as Corona 9022, was an American optical reconnaissance satellite which was launched in 1961. It was a KH-3 Corona satellite, based on an Agena-B rocket.[1] The launch of Discoverer 30 occurred at 19:59 UTC on 12 September 1961. A Thor DM-21 Agena-B rocket was used, flying from Launch Complex 75-3-5 at the Vandenberg Air Force Base.[2] Upon successfully reaching orbit, it was assigned the Harvard designation 1961 Omega 1. Discoverer 30 was operated in a low Earth orbit, with a perigee of, an apogee of, 82.6 degrees of inclination, and a period of 91.7 minutes.[3] The satellite had a mass of,[4] and was equipped with a panoramic camera with a focal length of, which had a maximum resolution of .[5] Images were recorded onto 70mm film, and returned in a Satellite Recovery Vehicle two days after launch; however, like the previous mission, all of the images returned were found to be out of focus. The Satellite Recovery Vehicle used by Discoverer 30 was SRV-551. Once its images had been returned, Discoverer 30's mission was complete, and it remained in orbit until its decay on 11 December 1961. References |