IGNF:PGP50STEREPS - TERRE ADELIE POINTE GEOLOGIE PERROUD STEREO POLAIRE SUD (TANGENTE)

{
  "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
  "type": "ProjectedCRS",
  "name": "TERRE ADELIE POINTE GEOLOGIE PERROUD STEREO POLAIRE SUD (TANGENTE)",
  "base_crs": {
    "name": "Pointe Geologie Perroud 1950 geographiques (dms)",
    "datum": {
      "type": "GeodeticReferenceFrame",
      "name": "Pointe Geologie Perroud 1950",
      "ellipsoid": {
        "name": "International 1924",
        "semi_major_axis": 6378388,
        "inverse_flattening": 297
      }
    },
    "coordinate_system": {
      "subtype": "ellipsoidal",
      "axis": [
        {
          "name": "Geodetic longitude",
          "abbreviation": "Lon",
          "direction": "east",
          "unit": "degree"
        },
        {
          "name": "Geodetic latitude",
          "abbreviation": "Lat",
          "direction": "north",
          "unit": "degree"
        }
      ]
    },
    "id": {
      "authority": "IGNF",
      "code": "PGP50G"
    }
  },
  "conversion": {
    "name": "STEREOGRAPHIQUE POLAIRE SUD TERRE-ADELIE (TANGENTE)",
    "method": {
      "name": "Polar Stereographic (variant A)",
      "id": {
        "authority": "EPSG",
        "code": 9810
      }
    },
    "parameters": [
      {
        "name": "Latitude of natural origin",
        "value": -90,
        "unit": "degree",
        "id": {
          "authority": "EPSG",
          "code": 8801
        }
      },
      {
        "name": "Longitude of natural origin",
        "value": 140,
        "unit": "degree",
        "id": {
          "authority": "EPSG",
          "code": 8802
        }
      },
      {
        "name": "Scale factor at natural origin",
        "value": 0.960272946,
        "unit": "unity",
        "id": {
          "authority": "EPSG",
          "code": 8805
        }
      },
      {
        "name": "False easting",
        "value": 300000,
        "unit": "metre",
        "id": {
          "authority": "EPSG",
          "code": 8806
        }
      },
      {
        "name": "False northing",
        "value": -2299363.482,
        "unit": "metre",
        "id": {
          "authority": "EPSG",
          "code": 8807
        }
      }
    ]
  },
  "coordinate_system": {
    "subtype": "Cartesian",
    "axis": [
      {
        "name": "Easting",
        "abbreviation": "X",
        "direction": "east",
        "unit": "metre"
      },
      {
        "name": "Northing",
        "abbreviation": "Y",
        "direction": "north",
        "unit": "metre"
      }
    ]
  },
  "scope": "LOCALE, HISTORIQUE",
  "area": "ARCHIPEL POINTE GEOLOGIE (TERRE ADELIE) - STEREOGRAPHIQUE POLAIRE SUD TERRE ADELIE",
  "bbox": {
    "south_latitude": -66.72,
    "west_longitude": 139.67,
    "north_latitude": -66.6,
    "east_longitude": 140.12
  },
  "id": {
    "authority": "IGNF",
    "code": "PGP50STEREPS"
  }
}

{'crs_wkt': 'PROJCRS["TERRE ADELIE POINTE GEOLOGIE PERROUD STEREO POLAIRE SUD '
            '(TANGENTE)",BASEGEOGCRS["Pointe Geologie Perroud 1950 '
            'geographiques (dms)",DATUM["Pointe Geologie Perroud '
            '1950",ELLIPSOID["International '
            '1924",6378388,297,LENGTHUNIT["metre",1]]],PRIMEM["Greenwich",0,ANGLEUNIT["degree",0.0174532925199433]],ID["IGNF","PGP50G"]],CONVERSION["STEREOGRAPHIQUE '
            'POLAIRE SUD TERRE-ADELIE (TANGENTE)",METHOD["Polar Stereographic '
            '(variant A)",ID["EPSG",9810]],PARAMETER["Latitude of natural '
            'origin",-90,ANGLEUNIT["degree",0.0174532925199433],ID["EPSG",8801]],PARAMETER["Longitude '
            'of natural '
            'origin",140,ANGLEUNIT["degree",0.0174532925199433],ID["EPSG",8802]],PARAMETER["Scale '
            'factor at natural '
            'origin",0.960272946,SCALEUNIT["unity",1],ID["EPSG",8805]],PARAMETER["False '
            'easting",300000,LENGTHUNIT["metre",1],ID["EPSG",8806]],PARAMETER["False '
            'northing",-2299363.482,LENGTHUNIT["metre",1],ID["EPSG",8807]]],CS[Cartesian,2],AXIS["easting '
            '(X)",east,ORDER[1],LENGTHUNIT["metre",1]],AXIS["northing '
            '(Y)",north,ORDER[2],LENGTHUNIT["metre",1]],USAGE[SCOPE["LOCALE, '
            'HISTORIQUE"],AREA["ARCHIPEL POINTE GEOLOGIE (TERRE ADELIE) - '
            'STEREOGRAPHIQUE POLAIRE SUD TERRE '
            'ADELIE"],BBOX[-66.72,139.67,-66.6,140.12]],ID["IGNF","PGP50STEREPS"]]',
 'false_easting': 300000.0,
 'false_northing': -2299363.482,
 'geographic_crs_name': 'Pointe Geologie Perroud 1950 geographiques (dms)',
 'grid_mapping_name': 'polar_stereographic',
 'horizontal_datum_name': 'Pointe Geologie Perroud 1950',
 'inverse_flattening': 297.0,
 'latitude_of_projection_origin': -90.0,
 'longitude_of_prime_meridian': 0.0,
 'prime_meridian_name': 'Greenwich',
 'projected_crs_name': 'TERRE ADELIE POINTE GEOLOGIE PERROUD STEREO POLAIRE '
                       'SUD (TANGENTE)',
 'reference_ellipsoid_name': 'International 1924',
 'scale_factor_at_projection_origin': 0.960272946,
 'semi_major_axis': 6378388.0,
 'semi_minor_axis': 6356911.9461279465,
 'straight_vertical_longitude_from_pole': 140.0}