| FTV-1126 | |
| Mission Type: | Optical reconnaissance |
| Operator: | US Air Force/NRO |
| Harvard Designation: | 1962 Sigma 1 |
| Spacecraft Type: | KH-5 Argon |
| Spacecraft Bus: | Agena-B |
| Manufacturer: | Lockheed |
| Launch Date: | UTC |
| Launch Rocket: | Thor DM-21 Agena-B 334 |
| Launch Site: | Vandenberg LC-75-3-5 |
| Orbit Reference: | Geocentric |
| Orbit Regime: | Low Earth |
| Orbit Periapsis: | 284km (176miles) |
| Orbit Apoapsis: | 632km (393miles) |
| Orbit Inclination: | 82.3 degrees |
| Orbit Period: | 93.75 minutes |
| Apsis: | gee |
FTV-1126, also known as Corona 9034A, was an American area survey optical reconnaissance satellite launched in 1962. It was a KH-5 Argon satellite, based on an Agena-B.[1] It was also unofficially known as Discoverer 41, a continuation of the designation sequence used for previous US reconnaissance satellites, which had officially been discontinued after Discoverer 38. It was the first KH-5 satellite to complete its mission successfully.
The launch of FTV-1126 occurred at 19:36 UTC on 15 May 1962. 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 1962 Sigma 1.
FTV-1126 was operated in a low Earth orbit, with a perigee of, an apogee of, 82.3 degrees of inclination, and a period of 93.75 minutes.[3] The satellite had a mass of,[4] and was equipped with a frame camera with a focal length of, which had a maximum resolution of .[5] Images were recorded onto 127mm film, and returned in a Satellite Recovery Vehicle, before the satellite ceased operations. The Satellite Recovery Vehicle used by FTV-1126 was 582. Once its images had been returned, the inactive FTV-1126 decayed from orbit on 26 November 1963.[3]