EPSG systems

EPSG:23090 ED50 / TM 0 N

Projected system (Transverse Mercator) in use: UK - offshore - North Sea. The full definition below, and conversion in one click.

Convert coordinates Open in Carte Download the .prj

System record
Code	EPSG:23090
Name	ED50 / TM 0 N
Type	Projected system — Transverse Mercator
Area of use	UK - offshore - North Sea United Kingdom (UK) - offshore - North Sea.
Bounds	W -5,05° · S 51,03° · E 3,40° · N 62,03°
Countries	United Kingdom
Datum	European Datum 1950
Ellipsoid	International 1924 a = 6378388 m · 1/f = 297
Base geographic system	EPSG:4230 — ED50
Unit	metre (E east, N north)
Transformation to WGS 84	ED50 to WGS 84 (18) (EPSG:1311) — accuracy 1 m
Scope	Oil and gas exploration and production.

Projection parameters

Parameter	Value	Unit
Latitude of natural origin	0	degree
Longitude of natural origin	0	degree
Scale factor at natural origin	0.9996	unity
False easting	500000	metre
False northing	0	metre

proj4 definition

+proj=tmerc +lat_0=0 +lon_0=0 +k=0.9996 +x_0=500000 +y_0=0 +ellps=intl +units=m +towgs84=-89.5,-93.8,-123.1,0,0,-0.156,1.2 +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:23090.

WKT (ESRI format, the .prj content)

PROJCS["ED_1950_TM_0_N",GEOGCS["GCS_European_1950",DATUM["D_European_1950",SPHEROID["International_1924",6378388.0,297.0]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",500000.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",0.0],PARAMETER["Scale_Factor",0.9996],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0]]

All systems — United Kingdom

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

Projection parameters

proj4 definition

WKT (ESRI format, the .prj content)

Other systems — United Kingdom