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SAC-C is an International (Argentina plus USA, France, Italy, Denmark, and Brazil) satellite that was launched by a Delta 2 rocket at 13:24 UT from Vandenberg AFB. Its mission is to remotely-sense vegetation, wetlands, and ecosystem in four wavelength bands covering 0.4-1.75 microns, with a spatial resolution of 1 km. The orbital planes of SAC-C, EO 1, Landsat 7 (1999-020A), and Terra (1999-068A) are closely coplanar, with a given site being successively visited by each spacecraft within an hour of each other. Also on-board is the GOLPE (GPS OccuLtation and Passive reflection Experiment) with a GPS receiver receiving signals from the GPS fleet (a) directly, (b) after reflection from Earth's surface, and (c) after the signals traversed the dense atmosphere and ionosphere tangentially. These tangentially penetrating signals carry phase change information which may be utilized in deriving the atmospheric density/temperature structures, and the ionospheric electron density profiles. It also carries a Helium Magnetometer.

Alternate Names

    Facts in Brief

    Launch Date: 2000-11-21
    Launch Vehicle: Delta II
    Launch Site: Vandenberg AFB, United States
    Mass: 475 kg

    Funding Agencies

    • National Aeronautics and Space Administration (United States)
    • Danish Space Research Institute (Denmark)
    • National Commission of Space Activities (CONAE) (Argentina)
    • Centre National d'Etudes Spatiales (France)
    • Instituto Nacional de Pesquisas Espaciais, Brazil (Brazil)
    • Agenzia Spaziale Italiana (Italy)


    • Earth Science

    Additional Information

    Questions and comments about this spacecraft can be directed to: Coordinated Request and User Support Office

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