EPSG:5171 Tokyo 1892 / Korea East Belt
Projected system (Transverse Mercator) in use: Asia - Korea N and S - 128°E to 130°E. 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.
| Code | EPSG:5171 |
|---|---|
| Name | Tokyo 1892 / Korea East Belt |
| Type | Projected system — Transverse Mercator |
| Area of use |
Asia - Korea N and S - 128°E to 130°E Democratic People's Republic of Korea (North Korea) and Republic of Korea (South Korea) - onshore between 128°E and 130°E. |
| Bounds | W 128,00° · S 34,49° · E 130,00° · N 43,01° |
| Countries | North Korea, South Korea |
| Datum | Tokyo 1892 |
| Ellipsoid | Bessel 1841 a = 6377397.155 m · 1/f = 299.1528128 |
| Base geographic system | EPSG:5132 — Tokyo 1892 |
| Unit | metre (X north, Y east) |
| Transformation to WGS 84 | No simple transformation published (ellipsoid alone) |
| Scope | Cadastre, engineering survey, topographic mapping (large and medium scale). |
Projection parameters
| Parameter | Value | Unit |
|---|---|---|
| Latitude of natural origin | 38 | degree |
| Longitude of natural origin | 129 | degree |
| Scale factor at natural origin | 1 | unity |
| False easting | 200000 | metre |
| False northing | 500000 | metre |
proj4 definition
+proj=tmerc +lat_0=38 +lon_0=129 +k=1 +x_0=200000 +y_0=500000 +ellps=bessel +units=m +no_defsPaste it into QGIS, proj4js, PostGIS (spatial_ref_sys) or GDAL. +towgs84 carries the EPSG transformation to WGS 84; the official code stays EPSG:5171.
WKT (ESRI format, the .prj content)
PROJCS["Tokyo_1892_Korea_East_Belt",GEOGCS["Tokyo_1892",DATUM["Tokyo_1892",SPHEROID["Bessel_1841",6377397.155,299.1528128]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",200000.0],PARAMETER["False_Northing",500000.0],PARAMETER["Central_Meridian",129.0],PARAMETER["Scale_Factor",1.0],PARAMETER["Latitude_Of_Origin",38.0],UNIT["Meter",1.0]]Other systems — North Korea
Source: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.