GEOGCS["Metis (2015) - Sphere / Ocentric",
    DATUM["Metis (2015) - Sphere",
        SPHEROID["Metis (2015) - Sphere",21500,0,
            AUTHORITY["IAU","51600"]],
        AUTHORITY["IAU","51600"]],
    PRIMEM["Reference Meridian",0,
        AUTHORITY["IAU","51600"]],
    UNIT["degree",0.0174532925199433,
        AUTHORITY["EPSG","9122"]],
    AUTHORITY["IAU","51600"]]