Side-looking radar all-weather reconnaissance satellite.

Lockheed Martin Astronautics, Denver (formerly Martin Marietta)

Typical orbit: 586 km circular orbit, 62.4 deg inclination. Associated Launch Vehicle: Shuttle, Titan 4, Titan 4B.

• 1988 December 2 - USA 34 - Launch Site: Cape Canaveral. Launch Vehicle: Shuttle. Perigee: 437 km (271 mi). Apogee: 447 km (277 mi). Inclination: 57.00 deg. Period: 93.40 min.

  Deployed from STS-27. Operations completed March 1997.

• 1991 March 8 - USA 69 - Launch Site: Vandenberg. Launch Vehicle: Titan 4. Perigee: 420 km (260 mi). Apogee: 662 km (411 mi). Inclination: 68.00 deg. Period: 95.50 min.

  Still operating December 1997. First West Coast launch of a Titan 4.

• 1997 October 24 - USA 133 - Launch Site: Vandenberg. Launch Vehicle: Titan 4. Perigee: 666 km (413 mi). Apogee: 679 km (421 mi). Inclination: 57.00 deg.

  Still operating December 1997.

• 2000 August 17 - USA 152 - Launch Site: Vandenberg. Launch Vehicle: Titan 4B. Mass: 14,500 kg (31,900 lb). Perigee: 689 km (428 mi). Apogee: 695 km (432 mi). Inclination: 68.00 deg. Period: 98.53 min.

  The National Reconnaissance Office satellite was reported to be an Onyx (formerly Lacrosse) radar imaging spacecraft built by Lockheed Martin. The Titan second stage reached a 572 x 675 km x 68.0 deg orbit and separated from the payload. Amateur observers reported the payload has made two small maneuvers and by Aug 23 was in a 681 x 695 km x 68.1 deg orbit.

• 2005 April 30 - USA 182 - Launch Site: Cape Canaveral. Launch Vehicle: Titan 4B. Mass: 14,500 kg (31,900 lb). Perigee: 481 km (298 mi). Apogee: 705 km (438 mi). Inclination: 57.00 deg.

  Last East Coast Titan launch. Delayed from December 18, 2001; July 3, 2002; October 2004; February 20, April 6, 10 and 11, 2005. Amateur observors believed this to be the fifth in the Lacrosse/Onyx radar spy satellite series built by Lockheed Martin.

• McDowell, Jonathan, Jonathan's Space Report (Internet Newsletter), Harvard University, Weekly, 1989 to Present. Essential internet newsletter recording worldwide weekly space events. Accessed at: http://www.planet4589.org/jsr.html.

• Krebs, Gunter, Gunter's Space Page, University of Frankfurt, 1996. Accessed at: http://www.skyrocket.de/space.

• JPL Mission and Spacecraft Library, Jet Propulsion Laboratory, 1997. Accessed at: http://msl.jpl.nasa.gov/home.html.

• Sorokin, Vladislav, Novosti Kosmonavtiki, "'Yantarnaya istoriya'", 1997, Issue 17, page 57.

• NASA/GSFC Orbital Information Group Website, . Accessed at: http://oig1.gsfc.nasa.gov/.

• Space-Launcher.com, Orbital Report News Agency. Accessed at: http://www.orbireport.com/Log.html.

• McDowell, Jonathan, Jonathan's Space Home Page, Harvard University, 1997-present. Jonathan McDowell's complete on-line listing of all objects orbited and over 20,000 rocket launches Accessed at: http://www.planet4589.org/jsr.html.

• USAF Satellite Database, USAF Institute of Technology, 1995. Accessed at: ftp://archive.afit.af.mil/pub/space/.