Wake Shield Facility; released and later retrieved by the Shuttle in a single mission; semiconductor materials research.

Typical orbit: 377 km circular orbit, 28.5 deg inclination. Mass: 1,935 kg (4,265 lb). Associated Launch Vehicle: Shuttle.

• 1995 September 7 - WSF 2 - Launch Site: Cape Canaveral. Launch Vehicle: Shuttle. Mass: 1,935 kg (4,265 lb). Perigee: 397 km (246 mi). Apogee: 405 km (251 mi). Inclination: 28.50 deg. Period: 92.60 min.

  Wake Shield Facility; released by STS-69 9/11/95; retrieved 9/14/95; semiconductor materials research. Retrieved by Endeavour Sep 14

• 1996 November 19 - WSF - Launch Site: Cape Canaveral. Launch Vehicle: Shuttle. Perigee: 347 km (215 mi). Apogee: 359 km (223 mi). Inclination: 28.50 deg. Period: 91.60 min.

  Retrieved Nov 26

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

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

• NASA GSFC Orbital Parameters, .

• 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.

• 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.