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Class: SIGINT. Destination: Surveillance Orbit. Nation: USA. Agency: USAF. Signals intelligence satellite; possibly some kind of imaging also done. On-board propulsion boosts spacecraft to 800 km operating orbit. Typical orbit: 4, 6. Mass: 1,700 kg (3,700 lb).
Singleton Chronology - 1988 September 5 - USA 32 - Launch Site: Vandenberg. Launch Complex: SLC4W. Launch Vehicle: Titan. Mass: 1,700 kg (3,700 lb). Perigee: 185 km (114 mi). Apogee: 292 km (181 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.
- 1989 September 6 - USA 45 - Launch Site: Vandenberg. Launch Complex: SLC4W. Launch Vehicle: Titan. Mass: 1,700 kg (3,700 lb).
Signals intelligence. Reentered from initial parking orbit of 200 km after failure of on-board boost motor.
- 1992 April 25 - USA 81 - Launch Site: Vandenberg. Launch Complex: SLC4W. Launch Vehicle: Titan. Mass: 1,700 kg (3,700 lb). Perigee: 145 km (90 mi). Apogee: 175 km (108 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.
Bibliography:- McDowell, Jonathan, Jonathan's Space Home Page (launch records), Harvard University, 1997-present. Web Address when accessed: http://www.planet4589.org/jsr.html.
- JPL Mission and Spacecraft Library, Jet Propulsion Laboratory, 1997. Web Address when accessed: http://msl.jpl.nasa.gov/home.html.
- McDowell, Jonathon, Quest, "US Reconnaissance Satellite Programs Part 2", 1995, Volume 4, Issue 4, page 49.
- Lockheed Martin Coporation, Atlas Family Fact Sheets, September 1998.. Web Address when accessed: http://www.lmco.com/ILS/txtmain/ils_lsysinfo.htm.
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