EPSG:5623 - NAD27 / Michigan East

{
  "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
  "type": "ProjectedCRS",
  "name": "NAD27 / Michigan East",
  "base_crs": {
    "name": "NAD27",
    "datum": {
      "type": "GeodeticReferenceFrame",
      "name": "North American Datum 1927",
      "ellipsoid": {
        "name": "Clarke 1866",
        "semi_major_axis": 6378206.4,
        "semi_minor_axis": 6356583.8
      }
    },
    "coordinate_system": {
      "subtype": "ellipsoidal",
      "axis": [
        {
          "name": "Geodetic latitude",
          "abbreviation": "Lat",
          "direction": "north",
          "unit": "degree"
        },
        {
          "name": "Geodetic longitude",
          "abbreviation": "Lon",
          "direction": "east",
          "unit": "degree"
        }
      ]
    },
    "id": {
      "authority": "EPSG",
      "code": 4267
    }
  },
  "conversion": {
    "name": "Michigan State Plane East zone",
    "method": {
      "name": "Transverse Mercator",
      "id": {
        "authority": "EPSG",
        "code": 9807
      }
    },
    "parameters": [
      {
        "name": "Latitude of natural origin",
        "value": 41.5,
        "unit": "degree",
        "id": {
          "authority": "EPSG",
          "code": 8801
        }
      },
      {
        "name": "Longitude of natural origin",
        "value": -83.6666666666667,
        "unit": "degree",
        "id": {
          "authority": "EPSG",
          "code": 8802
        }
      },
      {
        "name": "Scale factor at natural origin",
        "value": 0.999942857,
        "unit": "unity",
        "id": {
          "authority": "EPSG",
          "code": 8805
        }
      },
      {
        "name": "False easting",
        "value": 500000,
        "unit": {
          "type": "LinearUnit",
          "name": "US survey foot",
          "conversion_factor": 0.304800609601219
        },
        "id": {
          "authority": "EPSG",
          "code": 8806
        }
      },
      {
        "name": "False northing",
        "value": 0,
        "unit": {
          "type": "LinearUnit",
          "name": "US survey foot",
          "conversion_factor": 0.304800609601219
        },
        "id": {
          "authority": "EPSG",
          "code": 8807
        }
      }
    ]
  },
  "coordinate_system": {
    "subtype": "Cartesian",
    "axis": [
      {
        "name": "Easting",
        "abbreviation": "X",
        "direction": "east",
        "unit": {
          "type": "LinearUnit",
          "name": "US survey foot",
          "conversion_factor": 0.304800609601219
        }
      },
      {
        "name": "Northing",
        "abbreviation": "Y",
        "direction": "north",
        "unit": {
          "type": "LinearUnit",
          "name": "US survey foot",
          "conversion_factor": 0.304800609601219
        }
      }
    ]
  },
  "scope": "Engineering survey, topographic mapping.",
  "area": "United States (USA) - Michigan - counties of Alcona; Alpena; Arenac; Bay; Cheboygan; Chippewa; Clinton; Crawford; Genesee; Gladwin; Gratiot; Hillsdale; Huron; Ingham; Iosco; Jackson; Lapeer; Lenawee; Livingston; Macomb; Midland; Monroe; Montmorency; Oakland; Ogemaw; Oscoda; Otsego; Presque Isle; Roscommon; Saginaw; Sanilac; Shiawassee; St Clair; Tuscola; Washtenaw; Wayne.",
  "bbox": {
    "south_latitude": 41.69,
    "west_longitude": -84.87,
    "north_latitude": 46.04,
    "east_longitude": -82.13
  },
  "id": {
    "authority": "EPSG",
    "code": 5623
  }
}

{'crs_wkt': 'PROJCRS["NAD27 / Michigan East",BASEGEOGCRS["NAD27",DATUM["North '
            'American Datum 1927",ELLIPSOID["Clarke '
            '1866",6378206.4,294.978698213898,LENGTHUNIT["metre",1]]],PRIMEM["Greenwich",0,ANGLEUNIT["degree",0.0174532925199433]],ID["EPSG",4267]],CONVERSION["Michigan '
            'State Plane East zone",METHOD["Transverse '
            'Mercator",ID["EPSG",9807]],PARAMETER["Latitude of natural '
            'origin",41.5,ANGLEUNIT["degree",0.0174532925199433],ID["EPSG",8801]],PARAMETER["Longitude '
            'of natural '
            'origin",-83.6666666666667,ANGLEUNIT["degree",0.0174532925199433],ID["EPSG",8802]],PARAMETER["Scale '
            'factor at natural '
            'origin",0.999942857,SCALEUNIT["unity",1],ID["EPSG",8805]],PARAMETER["False '
            'easting",500000,LENGTHUNIT["US survey '
            'foot",0.304800609601219],ID["EPSG",8806]],PARAMETER["False '
            'northing",0,LENGTHUNIT["US survey '
            'foot",0.304800609601219],ID["EPSG",8807]]],CS[Cartesian,2],AXIS["easting '
            '(X)",east,ORDER[1],LENGTHUNIT["US survey '
            'foot",0.304800609601219]],AXIS["northing '
            '(Y)",north,ORDER[2],LENGTHUNIT["US survey '
            'foot",0.304800609601219]],USAGE[SCOPE["Engineering survey, '
            'topographic mapping."],AREA["United States (USA) - Michigan - '
            'counties of Alcona; Alpena; Arenac; Bay; Cheboygan; Chippewa; '
            'Clinton; Crawford; Genesee; Gladwin; Gratiot; Hillsdale; Huron; '
            'Ingham; Iosco; Jackson; Lapeer; Lenawee; Livingston; Macomb; '
            'Midland; Monroe; Montmorency; Oakland; Ogemaw; Oscoda; Otsego; '
            'Presque Isle; Roscommon; Saginaw; Sanilac; Shiawassee; St Clair; '
            'Tuscola; Washtenaw; '
            'Wayne."],BBOX[41.69,-84.87,46.04,-82.13]],ID["EPSG",5623]]',
 'false_easting': 500000.0,
 'false_northing': 0.0,
 'geographic_crs_name': 'NAD27',
 'grid_mapping_name': 'transverse_mercator',
 'horizontal_datum_name': 'North American Datum 1927',
 'inverse_flattening': 294.9786982138982,
 'latitude_of_projection_origin': 41.5,
 'longitude_of_central_meridian': -83.66666666666667,
 'longitude_of_prime_meridian': 0.0,
 'prime_meridian_name': 'Greenwich',
 'projected_crs_name': 'NAD27 / Michigan East',
 'reference_ellipsoid_name': 'Clarke 1866',
 'scale_factor_at_central_meridian': 0.999942857,
 'semi_major_axis': 6378206.4,
 'semi_minor_axis': 6356583.8}