PROJCS["Portia (2015) - Sphere / Ocentric / South Polar",GEOGCS["Portia (2015) - Sphere / Ocentric",DATUM["Portia (2015) - Sphere",SPHEROID["Portia (2015) - Sphere",54000,0,AUTHORITY["IAU","71200"]],AUTHORITY["IAU","71200"]],PRIMEM["Reference Meridian",0,AUTHORITY["IAU","71200"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["IAU","71200"]],PROJECTION["Polar_Stereographic"],PARAMETER["latitude_of_origin",-90],PARAMETER["central_meridian",0],PARAMETER["scale_factor",1],PARAMETER["false_easting",0],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["IAU","71235"]]