GEOGCS["GCS_Umbriel_2015_-_Sphere_Ocentric",DATUM["D_Umbriel_2015_-_Sphere",SPHEROID["Umbriel_2015_-_Sphere",584700.0,0.0]],PRIMEM["Reference_Meridian",0.0],UNIT["Degree",0.0174532925199433]]