EPSG:4313

BD72

Transform Get position on a map

Available transformations
to EPSG:4326
EPSG:4326 - WGS 84

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: degree (supplier to define representation)

Geodetic CRS: BD72

Datum: Reseau National Belge 1972

Ellipsoid: International 1924

Prime meridian: Greenwich

Data source: EPSG

Information source: IGN Brussels.

Revision date: 2021-06-17

Scope: Geodesy.

Area of use: Belgium - onshore.

Coordinate system: Ellipsoidal 2D CS. Axes: latitude, longitude. Orientations: north, east. UoM: degree

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Center coordinates
4.45 50.51

WGS84 bounds:
2.5 49.5
6.4 51.51

Belgium - onshore.
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Definition: OGC Well Known Text

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,
        AUTHORITY["EPSG","8901"]],
    UNIT["degree",0.0174532925199433,
        AUTHORITY["EPSG","9122"]],
    AUTHORITY["EPSG","4313"]]

Definition: OGC Well Known Text 2 (2019)

GEOGCRS["BD72",
    DATUM["Reseau National Belge 1972",
        ELLIPSOID["International 1924",6378388,297,
            LENGTHUNIT["metre",1]]],
    PRIMEM["Greenwich",0,
        ANGLEUNIT["degree",0.0174532925199433]],
    CS[ellipsoidal,2],
        AXIS["geodetic latitude (Lat)",north,
            ORDER[1],
            ANGLEUNIT["degree",0.0174532925199433]],
        AXIS["geodetic longitude (Lon)",east,
            ORDER[2],
            ANGLEUNIT["degree",0.0174532925199433]],
    USAGE[
        SCOPE["Geodesy."],
        AREA["Belgium - onshore."],
        BBOX[49.5,2.5,51.51,6.4]],
    ID["EPSG",4313]]

Definition: ESRI Well Known Text

GEOGCS["GCS_Belge_1972",
    DATUM["D_Belge_1972",
        SPHEROID["International_1924",6378388.0,297.0]],
    PRIMEM["Greenwich",0.0],
    UNIT["Degree",0.0174532925199433]]

Definition: PROJ.4

+proj=longlat +ellps=intl +towgs84=-106.8686,52.2978,-103.7239,0.3366,-0.457,1.8422,-1.2747 +no_defs +type=crs

Definition: JavaScript (Proj4js) 

proj4.defs("EPSG:4313","+proj=longlat +ellps=intl +towgs84=-106.8686,52.2978,-103.7239,0.3366,-0.457,1.8422,-1.2747 +no_defs +type=crs");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "GeographicCRS",
    "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"
            }
        ]
    },
    "scope": "Geodesy.",
    "area": "Belgium - onshore.",
    "bbox": {
        "south_latitude": 49.5,
        "west_longitude": 2.5,
        "north_latitude": 51.51,
        "east_longitude": 6.4
    },
    "id": {
        "authority": "EPSG",
        "code": 4313
    }
}

Definition: GeoServer

4313=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,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4313"]]

Definition: MapServer - MAPfile

PROJECTION
	"proj=longlat"
	"ellps=intl"
	"towgs84=-106.8686,52.2978,-103.7239,0.3366,-0.457,1.8422,-1.2747"
	"no_defs"
	"type=crs"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=longlat +ellps=intl +towgs84=-106.8686,52.2978,-103.7239,0.3366,-0.457,1.8422,-1.2747 +no_defs +type=crs">
	<Layer srs="+proj=longlat +ellps=intl +towgs84=-106.8686,52.2978,-103.7239,0.3366,-0.457,1.8422,-1.2747 +no_defs +type=crs">
	</Layer>
</Map>

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 4313, 'EPSG', 4313, '+proj=longlat +ellps=intl +towgs84=-106.8686,52.2978,-103.7239,0.3366,-0.457,1.8422,-1.2747 +no_defs +type=crs', '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,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4313"]]');