|Mission type||Optical reconnaissance|
|Operator||US Air Force/NRO|
|Harvard designation||1961 Omega 1|
|Mission duration||2 days|
|Spacecraft type||KH-3 Corona'''|
|Launch mass||1,150 kilograms (2,540 lb)|
|Start of mission|
|Launch date||12 September 1961, 19:59UTC|
|Rocket||Thor DM-21 Agena-B 310|
|Launch site||Vandenberg LC-75-3-5|
|End of mission|
|Decay date||11 December 1961|
|Perigee altitude||231 kilometers (144 mi)|
|Apogee altitude||484 kilometers (301 mi)|
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. 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 231 kilometres (144 mi), an apogee of 484 kilometres (301 mi), 82.6 degrees of inclination, and a period of 91.7 minutes. The satellite had a mass of 1,150 kilograms (2,540 lb), and was equipped with a panoramic camera with a focal length of 61 centimetres (24 in), which had a maximum resolution of 7.6 metres (25 ft). Images were recorded onto 70-millimeter (2.8 in) 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.