EPE

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EPE
Credit - NASA

Class: Solar. Destination: High Earth Orbit. Nation: USA. Agency: NASA.

Radiation and solar wind data.

Typical orbit: 984 x 50125 km, 28.3 deg inclinaton. Mass: 42 kg (92 lb).

EPE Chronology

1961 August 16 - Explorer 12 - Program: Explorer. Launch Site: Cape Canaveral. Launch Complex: LC17A. Launch Vehicle: Delta. Mass: 38 kg (83 lb). Perigee: 790 km (490 mi). Apogee: 76,620 km (47,600 mi). Inclination: 33.40 deg. Period: 1,587.30 min.
Radiation and solar wind data. Spacecraft engaged in research and exploration of the upper atmosphere or outer space (US Cat B).

1962 October 2 - Explorer 14 - Program: Explorer. Launch Site: Cape Canaveral. Launch Complex: LC17B. Launch Vehicle: Delta. Mass: 40 kg (88 lb). Perigee: 2,558 km (1,589 mi). Apogee: 96,229 km (59,793 mi). Inclination: 42.30 deg. Period: 2,184.60 min.
Magnetosphere studies. Spacecraft engaged in research and exploration of the upper atmosphere or outer space (US Cat B).

1962 October 27 - Explorer 15 - Program: Explorer. Launch Site: Cape Canaveral. Launch Complex: LC17B. Launch Vehicle: Delta. Mass: 45 kg (99 lb). Perigee: 306 km (190 mi). Apogee: 17,610 km (10,940 mi). Inclination: 17.90 deg. Period: 314.70 min.
Radiation decay data. Spacecraft engaged in research and exploration of the upper atmosphere or outer space (US Cat B).

1964 December 21 - Explorer 26 - Program: Explorer. Launch Site: Cape Canaveral. Launch Complex: LC17A. Launch Vehicle: Delta. Mass: 46 kg (101 lb). Perigee: 284 km (176 mi). Apogee: 10,043 km (6,240 mi). Inclination: 19.80 deg. Period: 205.70 min.
Spacecraft engaged in research and exploration of the upper atmosphere or outer space (US Cat B).

Bibliography:

McDowell, Jonathan, Jonathan's Space Home Page (launch records), Harvard University, 1997-present. Web Address when accessed: http://www.planet4589.org/jsr.html.
JPL Mission and Spacecraft Library, Jet Propulsion Laboratory, 1997. Web Address when accessed: http://msl.jpl.nasa.gov/home.html.
McDowell, Jonathan, Launch Log, October 1998. Web Address when accessed: http://hea-www.harvard.edu/~jcm/space/log/launch.html.
NASA Report, Preliminary Results of The Explorer Xxvi Solar Cell Experiment, Web Address when accessed: http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19660007969_1966007969.pdf.
NASA Report, Solar Radiation Pressure Effect on Explorer XII Rotation, Web Address when accessed: http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19630009858_1963009858.pdf.
NASA Report, Explorer VIII Satellite Measurements in the Upper Ionosphere, Web Address when accessed: http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19640012105_1964012105.pdf.

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