The activities carried out by the Smithsonian Astrophysical Observatory (SAO) for the National Aeronautics and Space Administration (NASA) during the period 1 July to 31 December 1978 are described. All four SAO laser sites were in routine operation during the reporting period; they obtained a 6-month total of 182,529 range observations on 3610 passes.


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    Title :

    Satellite-tracking and earth-dynamics research programs


    Publication date :

    1979-05-01


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English