GEOGCS["GCS_Umbriel_2000",
    DATUM["D_Umbriel_2000",
        SPHEROID["Umbriel_2000_IAU_IAG",584700,0,
            AUTHORITY["ESRI","107959"]],
        AUTHORITY["ESRI","106959"]],
    PRIMEM["Reference_Meridian",0,
        AUTHORITY["ESRI","108900"]],
    UNIT["degree",0.0174532925199433,
        AUTHORITY["EPSG","9122"]],
    AUTHORITY["ESRI","104959"]]