EPSG systems

EPSG:4312 MGI

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

System record
CodeEPSG:4312
NameMGI
TypeGeographic system
Area of use Austria
Bounds W 9,53° · S 46,40° · E 17,17° · N 49,02°
Countries Austria
DatumMilitar-Geographische Institut
Ellipsoid Bessel 1841 a = 6377397.155 m · 1/f = 299.1528128
Unit degree (Lat north, Lon east)
Transformation to WGS 84 MGI to WGS 84 (3) (EPSG:1618) — accuracy 1.5 m
ScopeGeodesy.

proj4 definition

+proj=longlat +ellps=bessel +towgs84=577.326,90.129,463.919,5.137,1.474,5.297,2.4232 +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:4312.

WKT (ESRI format, the .prj content)

GEOGCS["GCS_MGI",DATUM["D_MGI",SPHEROID["Bessel_1841",6377397.155,299.1528128]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]]

All systems — Austria

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