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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.


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