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Class: Earth. Type: Ionosphere. Nation: USA. Agency: NASA.
Early technology satellite. None reached orbit.
Total Mass: 56 kg.
10 October 1964
Explorer 22 Program: Explorer. Launch Site: Vandenberg . Launch Vehicle: Scout X-4. Mass: 52 kg. Perigee: 872 km. Apogee: 1,053 km. Inclination: 79.7 deg.
Ionospheric and geodetic data. Spacecraft engaged in research and exploration of the upper atmosphere or outer space.
29 April 1965
Explorer 27 Program: Explorer. Launch Site: Wallops Island . Launch Vehicle: Scout X-4. Mass: 60 kg. Perigee: 932 km. Apogee: 1,309 km. Inclination: 41.2 deg.
Battery failed in 1968; ionospheric research and geodetic data. Spacecraft engaged in research and exploration of the upper atmosphere or outer space.
- 2 - McDowell, Jonathan, The United Nations Registry of Space Objects, Harvard University, 1997. HTML when accessed: http://hea-www.harvard.edu/QEDT/jcm/space/un/un.html
- 6 - JPL Mission and Spacecraft Library, Jet Propulsion Laboratory, 1997. HTML when accessed: http://msl.jpl.nasa.gov/home.html
- 279 - McDowell, Jonathan, Launch Log, October 1998. HTML when accessed: http://hea-www.harvard.edu/~jcm/space/log/launch.html
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Last update 12 March 2001.
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© Mark Wade, 2001 .