EPSG:4937 - ETRS89

{
  "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
  "type": "GeographicCRS",
  "name": "ETRS89",
  "datum_ensemble": {
    "name": "European Terrestrial Reference System 1989 ensemble",
    "members": [
      {
        "name": "European Terrestrial Reference Frame 1989",
        "id": {
          "authority": "EPSG",
          "code": 1178
        }
      },
      {
        "name": "European Terrestrial Reference Frame 1990",
        "id": {
          "authority": "EPSG",
          "code": 1179
        }
      },
      {
        "name": "European Terrestrial Reference Frame 1991",
        "id": {
          "authority": "EPSG",
          "code": 1180
        }
      },
      {
        "name": "European Terrestrial Reference Frame 1992",
        "id": {
          "authority": "EPSG",
          "code": 1181
        }
      },
      {
        "name": "European Terrestrial Reference Frame 1993",
        "id": {
          "authority": "EPSG",
          "code": 1182
        }
      },
      {
        "name": "European Terrestrial Reference Frame 1994",
        "id": {
          "authority": "EPSG",
          "code": 1183
        }
      },
      {
        "name": "European Terrestrial Reference Frame 1996",
        "id": {
          "authority": "EPSG",
          "code": 1184
        }
      },
      {
        "name": "European Terrestrial Reference Frame 1997",
        "id": {
          "authority": "EPSG",
          "code": 1185
        }
      },
      {
        "name": "European Terrestrial Reference Frame 2000",
        "id": {
          "authority": "EPSG",
          "code": 1186
        }
      },
      {
        "name": "European Terrestrial Reference Frame 2005",
        "id": {
          "authority": "EPSG",
          "code": 1204
        }
      },
      {
        "name": "European Terrestrial Reference Frame 2014",
        "id": {
          "authority": "EPSG",
          "code": 1206
        }
      },
      {
        "name": "European Terrestrial Reference Frame 2020",
        "id": {
          "authority": "EPSG",
          "code": 1382
        }
      }
    ],
    "ellipsoid": {
      "name": "GRS 1980",
      "semi_major_axis": 6378137,
      "inverse_flattening": 298.257222101
    },
    "accuracy": "0.1",
    "id": {
      "authority": "EPSG",
      "code": 6258
    }
  },
  "coordinate_system": {
    "subtype": "ellipsoidal",
    "axis": [
      {
        "name": "Geodetic latitude",
        "abbreviation": "Lat",
        "direction": "north",
        "unit": "degree"
      },
      {
        "name": "Geodetic longitude",
        "abbreviation": "Lon",
        "direction": "east",
        "unit": "degree"
      },
      {
        "name": "Ellipsoidal height",
        "abbreviation": "h",
        "direction": "up",
        "unit": "metre"
      }
    ]
  },
  "scope": "Spatial referencing.",
  "area": "Europe - onshore and offshore: Albania; Andorra; Austria; Belgium; Bosnia and Herzegovina; Bulgaria; Croatia; Czechia; Denmark; Estonia; Faroe Islands; Finland; France; Germany; Gibraltar; Greece; Hungary; Ireland; Italy; Kosovo; Latvia; Liechtenstein; Lithuania; Luxembourg; Malta; Moldova; Monaco; Montenegro; Netherlands; North Macedonia; Norway including Svalbard and Jan Mayen; Poland; Portugal - mainland; Romania; San Marino; Serbia; Slovakia; Slovenia; Spain - mainland and Balearic islands; Sweden; Switzerland; United Kingdom (UK) including Channel Islands and Isle of Man; Vatican City State.",
  "bbox": {
    "south_latitude": 33.26,
    "west_longitude": -16.1,
    "north_latitude": 84.73,
    "east_longitude": 38.01
  },
  "id": {
    "authority": "EPSG",
    "code": 4937
  }
}

{'crs_wkt': 'GEOGCRS["ETRS89",ENSEMBLE["European Terrestrial Reference System '
            '1989 ensemble",MEMBER["European Terrestrial Reference Frame '
            '1989"],MEMBER["European Terrestrial Reference Frame '
            '1990"],MEMBER["European Terrestrial Reference Frame '
            '1991"],MEMBER["European Terrestrial Reference Frame '
            '1992"],MEMBER["European Terrestrial Reference Frame '
            '1993"],MEMBER["European Terrestrial Reference Frame '
            '1994"],MEMBER["European Terrestrial Reference Frame '
            '1996"],MEMBER["European Terrestrial Reference Frame '
            '1997"],MEMBER["European Terrestrial Reference Frame '
            '2000"],MEMBER["European Terrestrial Reference Frame '
            '2005"],MEMBER["European Terrestrial Reference Frame '
            '2014"],MEMBER["European Terrestrial Reference Frame '
            '2020"],ELLIPSOID["GRS '
            '1980",6378137,298.257222101,LENGTHUNIT["metre",1]],ENSEMBLEACCURACY[0.1]],PRIMEM["Greenwich",0,ANGLEUNIT["degree",0.0174532925199433]],CS[ellipsoidal,3],AXIS["geodetic '
            'latitude '
            '(Lat)",north,ORDER[1],ANGLEUNIT["degree",0.0174532925199433]],AXIS["geodetic '
            'longitude '
            '(Lon)",east,ORDER[2],ANGLEUNIT["degree",0.0174532925199433]],AXIS["ellipsoidal '
            'height '
            '(h)",up,ORDER[3],LENGTHUNIT["metre",1]],USAGE[SCOPE["Spatial '
            'referencing."],AREA["Europe - onshore and offshore: Albania; '
            'Andorra; Austria; Belgium; Bosnia and Herzegovina; Bulgaria; '
            'Croatia; Czechia; Denmark; Estonia; Faroe Islands; Finland; '
            'France; Germany; Gibraltar; Greece; Hungary; Ireland; Italy; '
            'Kosovo; Latvia; Liechtenstein; Lithuania; Luxembourg; Malta; '
            'Moldova; Monaco; Montenegro; Netherlands; North Macedonia; Norway '
            'including Svalbard and Jan Mayen; Poland; Portugal - mainland; '
            'Romania; San Marino; Serbia; Slovakia; Slovenia; Spain - mainland '
            'and Balearic islands; Sweden; Switzerland; United Kingdom (UK) '
            'including Channel Islands and Isle of Man; Vatican City '
            'State."],BBOX[33.26,-16.1,84.73,38.01]],ID["EPSG",4937]]',
 'geographic_crs_name': 'ETRS89',
 'grid_mapping_name': 'latitude_longitude',
 'horizontal_datum_name': 'European Terrestrial Reference System 1989 ensemble',
 'inverse_flattening': 298.257222101,
 'longitude_of_prime_meridian': 0.0,
 'prime_meridian_name': 'Greenwich',
 'reference_ellipsoid_name': 'GRS 1980',
 'semi_major_axis': 6378137.0,
 'semi_minor_axis': 6356752.314140356}