IGNF:GEOPORTALCRZ - Crozet projection Geoportail

{
  "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
  "type": "ProjectedCRS",
  "name": "Crozet projection Geoportail",
  "base_crs": {
    "name": "WGS84 geographiques (dms)",
    "datum_ensemble": {
      "name": "World Geodetic System 1984 ensemble",
      "members": [
        {
          "name": "World Geodetic System 1984 (Transit)",
          "id": {
            "authority": "EPSG",
            "code": 1166
          }
        },
        {
          "name": "World Geodetic System 1984 (G730)",
          "id": {
            "authority": "EPSG",
            "code": 1152
          }
        },
        {
          "name": "World Geodetic System 1984 (G873)",
          "id": {
            "authority": "EPSG",
            "code": 1153
          }
        },
        {
          "name": "World Geodetic System 1984 (G1150)",
          "id": {
            "authority": "EPSG",
            "code": 1154
          }
        },
        {
          "name": "World Geodetic System 1984 (G1674)",
          "id": {
            "authority": "EPSG",
            "code": 1155
          }
        },
        {
          "name": "World Geodetic System 1984 (G1762)",
          "id": {
            "authority": "EPSG",
            "code": 1156
          }
        },
        {
          "name": "World Geodetic System 1984 (G2139)",
          "id": {
            "authority": "EPSG",
            "code": 1309
          }
        },
        {
          "name": "World Geodetic System 1984 (G2296)",
          "id": {
            "authority": "EPSG",
            "code": 1383
          }
        }
      ],
      "ellipsoid": {
        "name": "WGS 84",
        "semi_major_axis": 6378137,
        "inverse_flattening": 298.257223563
      },
      "accuracy": "2.0",
      "id": {
        "authority": "EPSG",
        "code": 6326
      }
    },
    "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": "WGS84G"
    }
  },
  "conversion": {
    "name": "EQUIRECTANGULAIRE CROZET",
    "method": {
      "name": "Equidistant Cylindrical",
      "id": {
        "authority": "EPSG",
        "code": 1028
      }
    },
    "parameters": [
      {
        "name": "Latitude of 1st standard parallel",
        "value": -46,
        "unit": "degree",
        "id": {
          "authority": "EPSG",
          "code": 8823
        }
      },
      {
        "name": "Longitude of natural origin",
        "value": 0,
        "unit": "degree",
        "id": {
          "authority": "EPSG",
          "code": 8802
        }
      },
      {
        "name": "False easting",
        "value": 0,
        "unit": "metre",
        "id": {
          "authority": "EPSG",
          "code": 8806
        }
      },
      {
        "name": "False northing",
        "value": 0,
        "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",
  "area": "PLANETE TERRE ET SON ENVIRONNEMENT PROCHE - ILES CROZET (ARCHIPEL)",
  "bbox": {
    "south_latitude": -46.75,
    "west_longitude": 50,
    "north_latitude": -45.75,
    "east_longitude": 52.5
  },
  "id": {
    "authority": "IGNF",
    "code": "GEOPORTALCRZ"
  }
}

{'crs_wkt': 'PROJCRS["Crozet projection Geoportail",BASEGEOGCRS["WGS84 '
            'geographiques (dms)",ENSEMBLE["World Geodetic System 1984 '
            'ensemble",MEMBER["World Geodetic System 1984 '
            '(Transit)"],MEMBER["World Geodetic System 1984 '
            '(G730)"],MEMBER["World Geodetic System 1984 '
            '(G873)"],MEMBER["World Geodetic System 1984 '
            '(G1150)"],MEMBER["World Geodetic System 1984 '
            '(G1674)"],MEMBER["World Geodetic System 1984 '
            '(G1762)"],MEMBER["World Geodetic System 1984 '
            '(G2139)"],MEMBER["World Geodetic System 1984 '
            '(G2296)"],ELLIPSOID["WGS '
            '84",6378137,298.257223563,LENGTHUNIT["metre",1]],ENSEMBLEACCURACY[2.0]],PRIMEM["Greenwich",0,ANGLEUNIT["degree",0.0174532925199433]],ID["IGNF","WGS84G"]],CONVERSION["EQUIRECTANGULAIRE '
            'CROZET",METHOD["Equidistant '
            'Cylindrical",ID["EPSG",1028]],PARAMETER["Latitude of 1st standard '
            'parallel",-46,ANGLEUNIT["degree",0.0174532925199433],ID["EPSG",8823]],PARAMETER["Longitude '
            'of natural '
            'origin",0,ANGLEUNIT["degree",0.0174532925199433],ID["EPSG",8802]],PARAMETER["False '
            'easting",0,LENGTHUNIT["metre",1],ID["EPSG",8806]],PARAMETER["False '
            'northing",0,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"],AREA["PLANETE '
            'TERRE ET SON ENVIRONNEMENT PROCHE - ILES CROZET '
            '(ARCHIPEL)"],BBOX[-46.75,50,-45.75,52.5]],ID["IGNF","GEOPORTALCRZ"]]'}