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Class: Earth. Type: Magnetosphere. Nation: USA. Agency: NASA. Magnetic field, solar flare data. Typical orbit: 523 km x 857 km at 50 degrees inclination. Mass: 41 kg (90 lb).
S-1 Chronology - 1959 July 16 - Explorer S-1 - Program: Explorer. Launch Site: Cape Canaveral. Launch Complex: LC5. Launch Vehicle: Jupiter. FAILURE: Control lost after 5.5 sec. Destroyed by range safety. Mass: 41 kg (90 lb).
- 1959 October 13 - Explorer 7 - Program: Explorer. Launch Site: Cape Canaveral. Launch Complex: LC5. Launch Vehicle: Jupiter. Mass: 42 kg (92 lb). Perigee: 523 km (324 mi). Apogee: 857 km (532 mi). Inclination: 50.30 deg. Period: 98.60 min.
Spacecraft engaged in research and exploration of the upper atmosphere or outer space. Returned magnetic field and solar flare data.
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.
- Bramscher, Robert G, Spaceflight, "A Survey of Launch Vehicle Failures", 1980, Volume 22, page 351.
- NASA Report, Micrometeorite penetration experiment on explorer vii satellite - 1959 iota , Web Address when accessed: http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19630004552_1963004552.pdf.
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