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.[2]
Mission type | Optical reconnaissance |
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Operator | US Air Force/NRO |
Harvard designation | 1962 Sigma 1 |
COSPAR ID | 1962-018A ![]() |
SATCAT no. | 00292![]() |
Spacecraft properties | |
Spacecraft type | KH-5 Argon |
Bus | Agena-B |
Manufacturer | Lockheed |
Launch mass | 1,150 kilograms (2,540 lb) |
Start of mission | |
Launch date | 15 May 1962, 19:36 (1962-05-15UTC19:36Z) UTC |
Rocket | Thor DM-21 Agena-B 334 |
Launch site | Vandenberg LC-75-3-5 |
End of mission | |
Decay date | 26 November 1963 (1963-11-27) |
Orbital parameters | |
Reference system | Geocentric |
Regime | Low Earth |
Perigee altitude | 284 kilometers (176 mi) |
Apogee altitude | 632 kilometers (393 mi) |
Inclination | 82.3 degrees |
Period | 93.75 minutes |
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.[3] 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 284 kilometres (176 mi), an apogee of 632 kilometres (393 mi), 82.3 degrees of inclination, and a period of 93.75 minutes.[4] The satellite had a mass of 1,150 kilograms (2,540 lb),[2] and was equipped with a frame camera with a focal length of 76 millimetres (3.0 in), which had a maximum resolution of 140 metres (460 ft).[5] Images were recorded onto 127-millimeter (5.0 in) 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.[4]
Discoverer satellites | |
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Key Hole satellites | |||||||
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KH-1 Corona | |||||||
KH-2 Corona' | |||||||
KH-3 Corona''' | |||||||
KH-4 Corona-M |
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KH-5 Argon |
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KH-6 Lanyard |
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KH-7 Gambit |
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KH-8 Gambit |
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KH-9 Hexagon |
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KH-10 Dorian |
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KH-11 Crystal | |||||||
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← 1961 · Orbital launches in 1962 · 1963 → | |
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Discoverer 37 | SOLRAD 4 · LOFTI 2 · SECOR · Injun 2 · Surcal 1 | Ranger 3 | TIROS-4 | Mercury-Atlas 6 | FTV-2301 | Discoverer 38 | OSO-1 | Samos 6 | Kosmos 1 | Kosmos 2 | Midas 5 · Westford Drag | FTV-1142 | Ranger 4 | Kosmos 3 | Solrad 4B | Kosmos 4 | Ariel 1 | FTV-2401 | FTV-1125 | ANNA 1A | FTV-1126 | FTV-3501 | Mercury-Atlas 7 (Balloon Subsatellite 1) | FTV-3501 | Kosmos 5 | FTV-1128 | Zenit-2 No.3 | FTV-1127 · OSCAR 2 | FTV-2402 | FTV-2312 | TIROS-5 | FTV-1129 | FTV-1151 | Kosmos 6 | Telstar 1 | FTV-2403 | FTV-1130 | Mariner 1 | FTV-1131 | Kosmos 7 | FTV-1152 | FTV-2404 | Vostok 3 | Vostok 4 | Kosmos 8 | FTV-2502 | Venera 2MV-1 No.1 | Mariner 2 | FTV-1153 | Venera 2MV-1 No.2 | FTV-1132 | Venera 2MV-2 No.1 | FTV-1133 · ERS-2 | TIROS-6 | Kosmos 9 | Alouette 1 · TAVE | FTV-1154 | Explorer 14 | Mercury-Atlas 8 | FTV-1134 | Kosmos 10 | Ranger 5 | Kosmos 11 | Mars 2MV-4 No.1 | 1MS No.2 | STARAD | Explorer 15 | ANNA 1B | Mars 1 | Mars 2MV-3 No.1 | FTV-1136 | FTV-2405 · ERS-1 | FTV-1135 | FTV-1155 | NRL PL120 · Injun 3 · NRL PL121 · Surcal 2 · Calsphere 1 | Relay 1 | FTV-1136 | Explorer 16 | Midas 6 · ERS-3 · ERS-4 | Transit 5A-1 | Kosmos 12 | |
Payloads are separated by bullets ( · ), launches by pipes ( | ). Crewed flights are indicated in underline. Uncatalogued launch failures are listed in italics. Payloads deployed from other spacecraft are denoted in brackets. |
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