GEOGCS["Callisto (2015) - Sphere / Ocentric",DATUM["Callisto (2015) - Sphere",SPHEROID["Callisto (2015) - Sphere",2410300,0,AUTHORITY["IAU","50400"]],AUTHORITY["IAU","50400"]],PRIMEM["Reference Meridian",0,AUTHORITY["IAU","50400"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["IAU","50400"]]