GEOGCS["Unknown datum based upon the OSU91A ellipsoid (deprecated)",
    DATUM["Not_specified_based_on_OSU91A_ellipsoid",
        SPHEROID["OSU91A",6378136.3,298.257223563,
            AUTHORITY["EPSG","7033"]],
        AUTHORITY["EPSG","6033"]],
    PRIMEM["Greenwich",0,
        AUTHORITY["EPSG","8901"]],
    UNIT["degree",0.0174532925199433,
        AUTHORITY["EPSG","9122"]],
    AUTHORITY["EPSG","4033"]]