This page no longer updated from 31 October 2001. Latest version can be found at www.astronautix.com
Class: Earth. Type: Atmosphere. Nation: USA. Agency: NASA. Atmospheric research.
Specification
AE Chronology
03 April 1963
Explorer 17 Program: Explorer. Launch Site: Cape Canaveral . Launch Vehicle: Delta B. Mass: 185 kg. Perigee: 254 km. Apogee: 891 km. Inclination: 57.6 deg. Atmospheric research. Spacecraft engaged in research and exploration of the upper atmosphere or outer space (US Cat B).
25 May 1966
Explorer 32 Program: Explorer. Launch Site: Cape Canaveral . Launch Vehicle: Delta C. Mass: 225 kg. Perigee: 282 km. Apogee: 2,723 km. Inclination: 64.6 deg. Atmospheric Explorer; aeronomy experiments. Spacecraft engaged in research and exploration of the upper atmosphere or outer space (US Cat B).
16 December 1973
Explorer 51 Program: Explorer. Launch Site: Vandenberg . Launch Vehicle: Delta 1914. Mass: 658 kg. Perigee: 155 km. Apogee: 4,306 km. Inclination: 68.1 deg. Atmospheric Explorer; upper atmospheric research. Spacecraft engaged in research and exploration of the upper atmosphere or outer space (US Cat B).
06 October 1975
Explorer 54 Program: Explorer. Launch Site: Vandenberg . Launch Vehicle: Delta 2914. Mass: 676 kg. Perigee: 151 km. Apogee: 3,819 km. Inclination: 90.1 deg. Atmospheric Explorer; atmospheric research. Spacecraft engaged in research and exploration of the upper atmosphere or outer space (US Cat B).
20 November 1975
Explorer 55 Program: Explorer. Launch Site: Cape Canaveral . Launch Vehicle: Delta 2914. Mass: 721 kg. Perigee: 154 km. Apogee: 3,002 km. Inclination: 19.7 deg. Atmospheric Explorer. Spacecraft engaged in research and exploration of the upper atmosphere or outer space (US Cat B).
Bibliography:- 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 .