EPSG systems

EPSG:27392 NGO 1948 (Oslo) / NGO zone II

Projected system (Transverse Mercator) in use: Norway - zone II. The full definition below, and conversion in one click.

EPSG publishes no simple transformation to WGS 84 for this datum: conversion works on the ellipsoid alone and can be off by tens of metres.

System record
CodeEPSG:27392
NameNGO 1948 (Oslo) / NGO zone II
TypeProjected system — Transverse Mercator
Area of use Norway - zone II
Norway - between 3°30'W and 1°10' W of Oslo (7°13'22.5"E and 9°33'22.5"E of Greenwich).
Bounds W 7,22° · S 57,90° · E 9,56° · N 64,23°
Countries Norway
DatumNGO 1948 (Oslo)
Ellipsoid Bessel Modified a = 6377492.018 m · 1/f = 299.1528128
Prime meridianOslo 10.722916666666666 degree
Base geographic system EPSG:4817 — NGO 1948 (Oslo)
Unit metre (x north, y east)
Transformation to WGS 84 No simple transformation published (ellipsoid alone)
ScopeCadastre, topographic mapping.

Projection parameters

ParameterValueUnit
Latitude of natural origin58degree
Longitude of natural origin-2.3333333333333335degree
Scale factor at natural origin1unity
False easting0metre
False northing0metre

proj4 definition

+proj=tmerc +lat_0=58 +lon_0=-2.33333333333333 +k=1 +x_0=0 +y_0=0 +a=6377492.018 +rf=299.1528128 +pm=oslo +units=m +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:27392.

WKT (ESRI format, the .prj content)

PROJCS["NGO_1948_Oslo_Norway_Zone_2",GEOGCS["GCS_NGO_1948_Oslo",DATUM["NGO_1948_(Oslo)",SPHEROID["Bessel_Modified",6377492.018,299.1528128]],PRIMEM["Oslo",10.7229166666667],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",0.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",-2.33333333333333],PARAMETER["Scale_Factor",1.0],PARAMETER["Latitude_Of_Origin",58.0],UNIT["Meter",1.0]]

All systems — Norway

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