Shuttle-launched geostationary ELINT satellite model that replaced Rhyolite/Aquacade.

Typical orbit: 211 x 11706 km, 28.4 deg inclinaton. Associated Launch Vehicle: Shuttle.

• 1985 January 24 - USA 8 - Launch Site: Cape Canaveral. Launch Vehicle: Shuttle. Perigee: 341 km (211 mi). Apogee: 34,670 km (21,540 mi). Inclination: 28.40 deg. Period: 612.30 min.

  New Magnum model geostationary ELINT satellite model replaced earlier Rhyolite/Aquacade. Deployed from STS-51C 24 January 1985. Boosted to geostationary orbit. As of 2003 Apr 30 located at 69.16E drifting at 0.038W degrees per day.

• 1989 November 23 - USA 48 - Launch Site: Cape Canaveral. Launch Vehicle: Shuttle. Perigee: 216 km (134 mi). Apogee: 224 km (139 mi). Inclination: 28.50 deg. Period: 88.90 min.

  Second Magnum model ELINT satellite. Code name changed to Orion. Deployed from STS-33 November 23, 1989, and boosted to geostationary orbit. As of 2003 May 4 located at 88.13E drifting at 0.048W degrees per day.

• 1990 November 15 - USA 67 - Launch Site: Cape Canaveral. Launch Vehicle: Shuttle. Perigee: 78 km (48 mi). Apogee: 226 km (140 mi). Inclination: 28.50 deg. Period: 87.50 min.

  Deployed from STS 38 15 November 1990. Boosted to geostationary orbit. Last known longitude (31 December 1990) 99.16 deg W drifting at 0.050 deg W per day.

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

• 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.

• 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.

• McDowell, Jonathon, Quest, "US Reconnaissance Satellite Programs Part 2", 1995, Volume 4, Issue 4, page 49.