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Singleton

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AKA: SBWASS. Status: Operational 1988. First Launch: 1988-09-05. Last Launch: 1992-04-25. Number: 3 . Gross mass: 1,700 kg (3,700 lb).

• USA 32 - . Payload: SBWASS R1. Mass: 1,700 kg (3,700 lb). Nation: USA. Agency: USAF. Class: Surveillance. Type: SIGINT. Spacecraft: Singleton. USAF Sat Cat: 19460 . COSPAR: 1988-078A. Apogee: 292 km (181 mi). Perigee: 185 km (114 mi). Inclination: 85.00 deg. Period: 89.30 min. New class of signals intelligence satellite; possibly some kind of imaging also done. On-board propulsion boosts spacecraft to 800 km operating orbit. First Titan 2 standard launch vehicle launch..

• USA 45 - . Payload: SBWASS R2. Mass: 1,700 kg (3,700 lb). Nation: USA. Agency: USAF. Class: Surveillance. Type: SIGINT. Spacecraft: Singleton. USAF Sat Cat: 20220 . COSPAR: 1989-072A. Signals intelligence. Reentered from initial parking orbit of 200 km after failure of on-board boost motor..

• USA 81 - . Payload: SBWASS R3. Mass: 1,700 kg (3,700 lb). Nation: USA. Agency: USAF. Class: Surveillance. Type: SIGINT. Spacecraft: Singleton. USAF Sat Cat: 21949 . COSPAR: 1992-023A. Apogee: 175 km (108 mi). Perigee: 145 km (90 mi). Inclination: 84.90 deg. Period: 89.30 min. Signals intelligence satellite; possibly some kind of imaging also done. On-board propulsion boosts spacecraft to 800 km operating orbit..