PROJCS["Sphere_Mercator",
    GEOGCS["GCS_Sphere",
        DATUM["Not_specified_based_on_Authalic_Sphere",
            SPHEROID["Sphere",6371000,0]],
        PRIMEM["Greenwich",0],
        UNIT["Degree",0.017453292519943295]],
    PROJECTION["Mercator_1SP"],
    PARAMETER["False_Easting",0],
    PARAMETER["False_Northing",0],
    PARAMETER["Central_Meridian",0],
    PARAMETER["Standard_Parallel_1",0],
    UNIT["Meter",1],
    AUTHORITY["EPSG","53004"]]