EPSG systems

EPSG:4313 BD72

Geographic system in latitude and longitude, in use: Belgium - onshore. Datum, ellipsoid and transformation to WGS 84 below.

System record
CodeEPSG:4313
NameBD72
TypeGeographic system
Area of use Belgium - onshore
Bounds W 2,50° · S 49,50° · E 6,40° · N 51,51°
Countries Belgium
DatumReseau National Belge 1972
Ellipsoid International 1924 a = 6378388 m · 1/f = 297
Unit degree (Lat north, Lon east)
Transformation to WGS 84 BD72 to WGS 84 (3) (EPSG:15929) — accuracy 1 m
ScopeGeodesy.

proj4 definition

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

Paste it into QGIS, proj4js, PostGIS (spatial_ref_sys) or GDAL. +towgs84 carries the EPSG transformation to WGS 84; the official code stays EPSG:4313.

WKT (ESRI format, the .prj content)

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

All systems — Belgium

Source: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.