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"]]