EPSG systems

EPSG:10207 DIBA15 Grid

Projected system (Transverse Mercator) in use: UK - Didcot to Banbury. 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:10207
NameDIBA15 Grid
TypeProjected system — Transverse Mercator
Area of use UK - Didcot to Banbury
United Kingdom (UK) - on or related to the rail route from Didcot to Banbury.
Bounds W -1,46° · S 51,57° · E -1,15° · N 52,11°
Countries United Kingdom
DatumDIBA15 Intermediate Reference Frame
Ellipsoid GRS 1980 a = 6378137 m · 1/f = 298.257222101
Base geographic system EPSG:10204 — DIBA15-IRF
Unit metre (E east, N north)
Transformation to WGS 84 No simple transformation published (ellipsoid alone)
ScopeEngineering survey and topographic mapping for railway applications.

Projection parameters

ParameterValueUnit
Latitude of natural origin51.85degree
Longitude of natural origin-1.3degree
Scale factor at natural origin1unity
False easting511622.854metre
False northing324737.4633metre

proj4 definition

+proj=tmerc +lat_0=51.85 +lon_0=-1.3 +k=1 +x_0=511622.854 +y_0=324737.4633 +ellps=GRS80 +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:10207.

WKT (ESRI format, the .prj content)

PROJCS["DIBA15_Grid",GEOGCS["GCS_DIBA15-IRF",DATUM["DIBA15_Intermediate_Reference_Frame",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",511622.854],PARAMETER["False_Northing",324737.4633],PARAMETER["Central_Meridian",-1.3],PARAMETER["Scale_Factor",1.0],PARAMETER["Latitude_Of_Origin",51.85],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.