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Class: Earth. Type: Magnetosphere. Nation: USA. Agency: U.S. Air Force, U.S. Navy. Radiation decay data satellite. May also have been a cover for some NRL ELINT satellites.
Specification
Injun Chronology
29 June 1961
Injun 1 Launch Site: Cape Canaveral . Launch Vehicle: Thor Able-Star. Mass: 25 kg. Perigee: 869 km. Apogee: 992 km. Inclination: 66.8 deg. Dual launch; failed to separate from Solrad 3; still returned radiation data. Space craft engaged in investigation of spaceflight techniques and technology (US Cat A).
24 January 1962
Injun 2 Launch Site: Cape Canaveral . Launch Vehicle: Thor Able-Star. FAILURE: Failure.
13 December 1962
Injun 3 Launch Site: Vandenberg . Launch Vehicle: Thor Agena D. Mass: 52 kg. Perigee: 240 km. Apogee: 2,406 km. Inclination: 70.3 deg. Radiation decay data. Space craft engaged in investigation of spaceflight techniques and technology (US Cat A).
21 November 1964
Explorer 25 Program: Explorer. Launch Site: Vandenberg . Launch Vehicle: Scout X-4. Mass: 40 kg. Perigee: 524 km. Apogee: 2,349 km. Inclination: 81.4 deg. Radiation data. Spacecraft engaged in research and exploration of the upper atmosphere or outer space (US Cat B).
08 August 1968
Explorer 40 Program: Explorer. Launch Site: Vandenberg . Launch Vehicle: Scout B. Mass: 70 kg. Perigee: 677 km. Apogee: 2,494 km. Inclination: 80.7 deg. Injun Explorer; radiation data. 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 .