| Mission type | Optical reconnaissance |
|---|---|
| Operator | US Air Force/NRO |
| Harvard designation | 1961 Alpha Gamma 1 |
| COSPAR ID | 1961-027A |
| SATCAT no. | 00189 |
| Mission duration | 1 day |
| Spacecraft properties | |
| Spacecraft type | KH-3 Corona''' |
| Bus | Agena-B |
| Manufacturer | Lockheed |
| Launch mass | 1,150 kilograms (2,540 lb) |
| Start of mission | |
| Launch date | 13 October 1961, 19:22 UTC |
| Rocket | Thor DM-21 Agena-B 328 |
| Launch site | Vandenberg LC-75-3-4 |
| End of mission | |
| Decay date | 13 November 1961 |
| Orbital parameters | |
| Reference system | Geocentric |
| Regime | Low Earth |
| Perigee altitude | 233 kilometers (145 mi) |
| Apogee altitude | 350 kilometers (220 mi) |
| Inclination | 81.6 degrees |
| Period | 90.3 minutes |
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Discoverer 32, also known as Corona 9025, was an American optical reconnaissance satellite which was launched in 1961. It was a KH-3 Corona''' satellite, based on an Agena-B.[1]
The launch of Discoverer 32 occurred at 19:22 UTC on 13 October 1961. A Thor DM-21 Agena-B rocket was used, flying from Launch Complex 75-3-4 at the Vandenberg Air Force Base.[2] Upon successfully reaching orbit, it was assigned the Harvard designation 1961 Alpha Gamma 1.
Discoverer 32 was operated in a low Earth orbit, with a perigee of 233 kilometres (145 mi), an apogee of 350 kilometres (220 mi), 81.6 degrees of inclination, and a period of 90.3 minutes.[3] The satellite had a mass of 1,150 kilograms (2,540 lb),[4] 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).[5] Images were recorded onto 70-millimeter (2.8 in) film, and returned in a Satellite Recovery Vehicle, which was deorbited one day after launch. The Satellite Recovery Vehicle used by Discoverer 32 was SRV-555. Following the return of its images, Discoverer 32 remained in orbit until it decayed on 13 November 1961.[3] Most of the images it produced were found to have been out of focus.[6]
