Orbit Inclination: 115 deg
Period: 102 min
Perigee: 824 km

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The mission of GEOS 3 (Geodynamics Experimental Ocean Satellite) was to provide
the stepping stone between the National Geodetic Satellite Program (NGSP) and
the Earth and Ocean Physics Application ... Program. It provided data to refine
the geodetic and geophysical results of the NGSP and served as a test for new
systems. A major achievment was the flight of a radar altimeter. Further
mission objectives: intercomparison of tracking systems, investigation of
solid-earth dynamic phenomena through precision laser tracking, refinement of
orbit determination techniques, determination of interdatum ties and gravity
models, and support of the calibration and position determination of NASA
Spaceflight Tracking and Data Network (STDN) S-band tracking stations. For
more details, see special reports on the GEOS 3 in J. Geophys. Res., v. 84, n.
B8, 1979.
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Taken from the NSSDC System for Information Retrieval and Storage (SIRS). For
more information contact the NSSDC Coordinated Request and User Support Office,
301-286-6695 (NASA Goddard Space Flight Center, Code 933.4, Greenbelt, Maryland
20771, USA)

http://ilrs.gsfc.nasa.gov/satellite_missions/list_of_satellites/geos_general.html