EPSG:28991 - Amersfoort / RD Old

Attributes

Unit

metre

Scope

Engineering survey, topographic mapping.

Remarks

None

Area of use

Netherlands - onshore, including Waddenzee, Dutch Wadden Islands and 12-mile offshore coastal zone.

Data Source: EPSG v11.016 2024-08-31

Datum: Amersfoort

Coordinate System: cartesian

Projection: RD Old

Geodetic CRS: Amersfoort

Export

PROJCRS["Amersfoort / RD Old",
    BASEGEOGCRS["Amersfoort",
        DATUM["Amersfoort",
            ELLIPSOID["Bessel 1841",6377397.155,299.1528128,
                LENGTHUNIT["metre",1]]],
        PRIMEM["Greenwich",0,
            ANGLEUNIT["degree",0.0174532925199433]],
        ID["EPSG",4289]],
    CONVERSION["RD Old",
        METHOD["Oblique Stereographic",
            ID["EPSG",9809]],
        PARAMETER["Latitude of natural origin",52.1561605555556,
            ANGLEUNIT["degree",0.0174532925199433],
            ID["EPSG",8801]],
        PARAMETER["Longitude of natural origin",5.38763888888889,
            ANGLEUNIT["degree",0.0174532925199433],
            ID["EPSG",8802]],
        PARAMETER["Scale factor at natural origin",0.9999079,
            SCALEUNIT["unity",1],
            ID["EPSG",8805]],
        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["Engineering survey, topographic mapping."],
        AREA["Netherlands - onshore, including Waddenzee, Dutch Wadden Islands and 12-mile offshore coastal zone."],
        BBOX[50.75,3.2,53.7,7.22]],
    ID["EPSG",28991]]
{
  "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
  "type": "ProjectedCRS",
  "name": "Amersfoort / RD Old",
  "base_crs": {
    "name": "Amersfoort",
    "datum": {
      "type": "GeodeticReferenceFrame",
      "name": "Amersfoort",
      "ellipsoid": {
        "name": "Bessel 1841",
        "semi_major_axis": 6377397.155,
        "inverse_flattening": 299.1528128
      }
    },
    "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": 4289
    }
  },
  "conversion": {
    "name": "RD Old",
    "method": {
      "name": "Oblique Stereographic",
      "id": {
        "authority": "EPSG",
        "code": 9809
      }
    },
    "parameters": [
      {
        "name": "Latitude of natural origin",
        "value": 52.1561605555556,
        "unit": "degree",
        "id": {
          "authority": "EPSG",
          "code": 8801
        }
      },
      {
        "name": "Longitude of natural origin",
        "value": 5.38763888888889,
        "unit": "degree",
        "id": {
          "authority": "EPSG",
          "code": 8802
        }
      },
      {
        "name": "Scale factor at natural origin",
        "value": 0.9999079,
        "unit": "unity",
        "id": {
          "authority": "EPSG",
          "code": 8805
        }
      },
      {
        "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": "Engineering survey, topographic mapping.",
  "area": "Netherlands - onshore, including Waddenzee, Dutch Wadden Islands and 12-mile offshore coastal zone.",
  "bbox": {
    "south_latitude": 50.75,
    "west_longitude": 3.2,
    "north_latitude": 53.7,
    "east_longitude": 7.22
  },
  "id": {
    "authority": "EPSG",
    "code": 28991
  }
}
{'crs_wkt': 'PROJCRS["Amersfoort / RD '
            'Old",BASEGEOGCRS["Amersfoort",DATUM["Amersfoort",ELLIPSOID["Bessel '
            '1841",6377397.155,299.1528128,LENGTHUNIT["metre",1]]],PRIMEM["Greenwich",0,ANGLEUNIT["degree",0.0174532925199433]],ID["EPSG",4289]],CONVERSION["RD '
            'Old",METHOD["Oblique '
            'Stereographic",ID["EPSG",9809]],PARAMETER["Latitude of natural '
            'origin",52.1561605555556,ANGLEUNIT["degree",0.0174532925199433],ID["EPSG",8801]],PARAMETER["Longitude '
            'of natural '
            'origin",5.38763888888889,ANGLEUNIT["degree",0.0174532925199433],ID["EPSG",8802]],PARAMETER["Scale '
            'factor at natural '
            'origin",0.9999079,SCALEUNIT["unity",1],ID["EPSG",8805]],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["Engineering '
            'survey, topographic mapping."],AREA["Netherlands - onshore, '
            'including Waddenzee, Dutch Wadden Islands and 12-mile offshore '
            'coastal zone."],BBOX[50.75,3.2,53.7,7.22]],ID["EPSG",28991]]'}