EPSG:31370

BD72 / Belgian Lambert 72 -- Belgium

Selected transformation

Method: Coordinate Frame rotation (geog2D domain)

Remarks: Parameter values from BD72 to ETRS89 (2) (code 15928) assuming that ETRS89 is equivalent to WGS 84 within the accuracy of the tfm. Scale difference is given by information source as -1.0000012747; given in this record in ppm to assist application usage.

Information source: IGN Brussels www.ngi.be

Revision date: 2021-09-23

Attributes

Unit: metre

Geodetic CRS: BD72

Datum: Reseau National Belge 1972

Ellipsoid: International 1924

Prime meridian: Greenwich

Data source: EPSG

Information source: IGN Brussels; www.ngi.be/

Revision date: 2021-06-17

Scope: Engineering survey, topographic mapping.

Remarks: Introduced in 2000 as an alternative to CRS code 31300 to avoid the special projection method LCC (2SP Belgium) (code 9803). If software cannot handle latitude of origin 90°N, use latitude of origin = 50°47'57.704"N with Nf = 165372.956 m.

Area of use: Belgium - onshore.

Coordinate system: Cartesian 2D CS. Axes: easting, northing (X,Y). Orientations: east, north. UoM: m.

Center coordinates
155822.2 132723.18

Projected bounds:
14697.3 22635.8
291071.84 246456.18

WGS84 bounds:
2.5 49.5
6.4 51.51

Belgium - onshore.
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Definition: Well Known Text (WKT)

PROJCS["BD72 / Belgian Lambert 72",
    GEOGCS["BD72",
        DATUM["Reseau_National_Belge_1972",
            SPHEROID["International 1924",6378388,297],
            TOWGS84[-106.8686,52.2978,-103.7239,-0.3366,0.457,-1.8422,-1.2747]],
        PRIMEM["Greenwich",0],
        UNIT["degree",0.0174532925199433,
            AUTHORITY["EPSG","9122"]],
        AUTHORITY["EPSG","4313"]],
    PROJECTION["Lambert_Conformal_Conic_2SP"],
    PARAMETER["latitude_of_origin",90],
    PARAMETER["central_meridian",4.36748666666667],
    PARAMETER["standard_parallel_1",51.1666672333333],
    PARAMETER["standard_parallel_2",49.8333339],
    PARAMETER["false_easting",150000.013],
    PARAMETER["false_northing",5400088.438],
    UNIT["metre",1],
    AXIS["Easting",EAST],
    AXIS["Northing",NORTH],
    AUTHORITY["EPSG","31370"]]

Definition: ESRI WKT

PROJCS["Belge_Lambert_1972",GEOGCS["GCS_Belge_1972",DATUM["D_Belge_1972",SPHEROID["International_1924",6378388.0,297.0]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Lambert_Conformal_Conic"],PARAMETER["False_Easting",150000.013],PARAMETER["False_Northing",5400088.438],PARAMETER["Central_Meridian",4.36748666666667],PARAMETER["Standard_Parallel_1",51.1666672333333],PARAMETER["Standard_Parallel_2",49.8333339],PARAMETER["Latitude_Of_Origin",90.0],UNIT["Meter",1.0]]

Definition: PROJ.4

+proj=lcc +lat_0=90 +lon_0=4.36748666666667 +lat_1=51.1666672333333 +lat_2=49.8333339 +x_0=150000.013 +y_0=5400088.438 +ellps=intl +towgs84=-106.8686,52.2978,-103.7239,-0.3366,0.457,-1.8422,-1.27469999999796 +units=m +no_defs +type=crs

Definition: JavaScript (Proj4js)

proj4.defs("EPSG:31370","+proj=lcc +lat_0=90 +lon_0=4.36748666666667 +lat_1=51.1666672333333 +lat_2=49.8333339 +x_0=150000.013 +y_0=5400088.438 +ellps=intl +towgs84=-106.8686,52.2978,-103.7239,-0.3366,0.457,-1.8422,-1.27469999999796 +units=m +no_defs +type=crs");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.4/projjson.schema.json",
    "type": "ProjectedCRS",
    "name": "BD72 / Belgian Lambert 72",
    "base_crs": {
        "name": "BD72",
        "datum": {
            "type": "GeodeticReferenceFrame",
            "name": "Reseau National Belge 1972",
            "ellipsoid": {
                "name": "International 1924",
                "semi_major_axis": 6378388,
                "inverse_flattening": 297
            }
        },
        "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": 4313
        }
    },
    "conversion": {
        "name": "Belgian Lambert 72",
        "method": {
            "name": "Lambert Conic Conformal (2SP)",
            "id": {
                "authority": "EPSG",
                "code": 9802
            }
        },
        "parameters": [
            {
                "name": "Latitude of false origin",
                "value": 90,
                "unit": "degree",
                "id": {
                    "authority": "EPSG",
                    "code": 8821
                }
            },
            {
                "name": "Longitude of false origin",
                "value": 4.36748666666667,
                "unit": "degree",
                "id": {
                    "authority": "EPSG",
                    "code": 8822
                }
            },
            {
                "name": "Latitude of 1st standard parallel",
                "value": 51.1666672333333,
                "unit": "degree",
                "id": {
                    "authority": "EPSG",
                    "code": 8823
                }
            },
            {
                "name": "Latitude of 2nd standard parallel",
                "value": 49.8333339,
                "unit": "degree",
                "id": {
                    "authority": "EPSG",
                    "code": 8824
                }
            },
            {
                "name": "Easting at false origin",
                "value": 150000.013,
                "unit": "metre",
                "id": {
                    "authority": "EPSG",
                    "code": 8826
                }
            },
            {
                "name": "Northing at false origin",
                "value": 5400088.438,
                "unit": "metre",
                "id": {
                    "authority": "EPSG",
                    "code": 8827
                }
            }
        ]
    },
    "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": "Belgium - onshore.",
    "bbox": {
        "south_latitude": 49.5,
        "west_longitude": 2.5,
        "north_latitude": 51.51,
        "east_longitude": 6.4
    },
    "id": {
        "authority": "EPSG",
        "code": 31370
    }
}

Definition: GeoServer

31370=PROJCS["BD72 / Belgian Lambert 72",GEOGCS["BD72",DATUM["Reseau_National_Belge_1972",SPHEROID["International 1924",6378388,297],TOWGS84[-106.8686,52.2978,-103.7239,-0.3366,0.457,-1.8422,-1.2747]],PRIMEM["Greenwich",0],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4313"]],PROJECTION["Lambert_Conformal_Conic_2SP"],PARAMETER["latitude_of_origin",90],PARAMETER["central_meridian",4.36748666666667],PARAMETER["standard_parallel_1",51.1666672333333],PARAMETER["standard_parallel_2",49.8333339],PARAMETER["false_easting",150000.013],PARAMETER["false_northing",5400088.438],UNIT["metre",1],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","31370"]]

Definition: MapServer - MAPfile

PROJECTION
	"proj=lcc"
	"lat_0=90"
	"lon_0=4.36748666666667"
	"lat_1=51.1666672333333"
	"lat_2=49.8333339"
	"x_0=150000.013"
	"y_0=5400088.438"
	"ellps=intl"
	"towgs84=-106.8686,52.2978,-103.7239,-0.3366,0.457,-1.8422,-1.27469999999796"
	"units=m"
	"no_defs"
	"type=crs"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=lcc +lat_0=90 +lon_0=4.36748666666667 +lat_1=51.1666672333333 +lat_2=49.8333339 +x_0=150000.013 +y_0=5400088.438 +ellps=intl +towgs84=-106.8686,52.2978,-103.7239,-0.3366,0.457,-1.8422,-1.27469999999796 +units=m +no_defs +type=crs">
	<Layer srs="+proj=lcc +lat_0=90 +lon_0=4.36748666666667 +lat_1=51.1666672333333 +lat_2=49.8333339 +x_0=150000.013 +y_0=5400088.438 +ellps=intl +towgs84=-106.8686,52.2978,-103.7239,-0.3366,0.457,-1.8422,-1.27469999999796 +units=m +no_defs +type=crs">
	</Layer>
</Map>

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 31370, 'EPSG', 31370, '+proj=lcc +lat_0=90 +lon_0=4.36748666666667 +lat_1=51.1666672333333 +lat_2=49.8333339 +x_0=150000.013 +y_0=5400088.438 +ellps=intl +towgs84=-106.8686,52.2978,-103.7239,-0.3366,0.457,-1.8422,-1.27469999999796 +units=m +no_defs +type=crs', 'PROJCS["BD72 / Belgian Lambert 72",GEOGCS["BD72",DATUM["Reseau_National_Belge_1972",SPHEROID["International 1924",6378388,297],TOWGS84[-106.8686,52.2978,-103.7239,-0.3366,0.457,-1.8422,-1.2747]],PRIMEM["Greenwich",0],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4313"]],PROJECTION["Lambert_Conformal_Conic_2SP"],PARAMETER["latitude_of_origin",90],PARAMETER["central_meridian",4.36748666666667],PARAMETER["standard_parallel_1",51.1666672333333],PARAMETER["standard_parallel_2",49.8333339],PARAMETER["false_easting",150000.013],PARAMETER["false_northing",5400088.438],UNIT["metre",1],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","31370"]]');

Definition: OGC WKT

PROJCS["BD72 / Belgian Lambert 72",GEOGCS["BD72",DATUM["Reseau_National_Belge_1972",SPHEROID["International 1924",6378388,297],TOWGS84[-106.8686,52.2978,-103.7239,-0.3366,0.457,-1.8422,-1.2747]],PRIMEM["Greenwich",0],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4313"]],PROJECTION["Lambert_Conformal_Conic_2SP"],PARAMETER["latitude_of_origin",90],PARAMETER["central_meridian",4.36748666666667],PARAMETER["standard_parallel_1",51.1666672333333],PARAMETER["standard_parallel_2",49.8333339],PARAMETER["false_easting",150000.013],PARAMETER["false_northing",5400088.438],UNIT["metre",1],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","31370"]]

Definition: OGC WKT 2 (2019)

PROJCRS["BD72 / Belgian Lambert 72",BASEGEOGCRS["BD72",DATUM["Reseau National Belge 1972",ELLIPSOID["International 1924",6378388,297,LENGTHUNIT["metre",1]]],PRIMEM["Greenwich",0,ANGLEUNIT["degree",0.0174532925199433]],ID["EPSG",4313]],CONVERSION["Belgian Lambert 72",METHOD["Lambert Conic Conformal (2SP)",ID["EPSG",9802]],PARAMETER["Latitude of false origin",90,ANGLEUNIT["degree",0.0174532925199433],ID["EPSG",8821]],PARAMETER["Longitude of false origin",4.36748666666667,ANGLEUNIT["degree",0.0174532925199433],ID["EPSG",8822]],PARAMETER["Latitude of 1st standard parallel",51.1666672333333,ANGLEUNIT["degree",0.0174532925199433],ID["EPSG",8823]],PARAMETER["Latitude of 2nd standard parallel",49.8333339,ANGLEUNIT["degree",0.0174532925199433],ID["EPSG",8824]],PARAMETER["Easting at false origin",150000.013,LENGTHUNIT["metre",1],ID["EPSG",8826]],PARAMETER["Northing at false origin",5400088.438,LENGTHUNIT["metre",1],ID["EPSG",8827]]],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["Belgium - onshore."],BBOX[49.5,2.5,51.51,6.4]],ID["EPSG",31370]]