EPSG:5178 Korean 1985 / Unified CS
Projected system (Transverse Mercator) in use: Korea, Republic of (South Korea) - onshore. 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:5178 |
|---|---|
| Name | Korean 1985 / Unified CS |
| Type | Projected system — Transverse Mercator |
| Area of use |
Korea, Republic of (South Korea) - onshore Republic of Korea (South Korea) - onshore. |
| Bounds | W 124,53° · S 33,14° · E 131,01° · N 38,64° |
| Countries | South Korea |
| Datum | Korean Datum 1985 |
| Ellipsoid | Bessel 1841 a = 6377397.155 m · 1/f = 299.1528128 |
| Base geographic system | EPSG:4162 — Korean 1985 |
| Unit | metre (X north, Y east) |
| Transformation to WGS 84 | No simple transformation published (ellipsoid alone) |
| Scope | Topographic mapping (small scale). |
Projection parameters
| Parameter | Value | Unit |
|---|---|---|
| Latitude of natural origin | 38 | degree |
| Longitude of natural origin | 127.5 | degree |
| Scale factor at natural origin | 0.9996 | unity |
| False easting | 1000000 | metre |
| False northing | 2000000 | metre |
proj4 definition
+proj=tmerc +lat_0=38 +lon_0=127.5 +k=0.9996 +x_0=1000000 +y_0=2000000 +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:5178.
WKT (ESRI format, the .prj content)
PROJCS["Korean_1985_Korea_Unified_Coordinate_System",GEOGCS["GCS_Korean_Datum_1985",DATUM["D_Korean_Datum_1985",SPHEROID["Bessel_1841",6377397.155,299.1528128]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",1000000.0],PARAMETER["False_Northing",2000000.0],PARAMETER["Central_Meridian",127.5],PARAMETER["Scale_Factor",0.9996],PARAMETER["Latitude_Of_Origin",38.0],UNIT["Meter",1.0]]Other systems — South Korea
- EPSG:5169Tokyo 1892 / Korea West Belt
- EPSG:5170Tokyo 1892 / Korea Central Belt
- EPSG:5171Tokyo 1892 / Korea East Belt
- EPSG:5172Tokyo 1892 / Korea East Sea Belt
- EPSG:5173Korean 1985 / Modified West Belt
- EPSG:5174Korean 1985 / Modified Central Belt
- EPSG:5175Korean 1985 / Modified Central Belt Jeju
- EPSG:5176Korean 1985 / Modified East Belt
- EPSG:5177Korean 1985 / Modified East Sea Belt
- EPSG:5179KGD2002 / Unified CS
- EPSG:5180KGD2002 / West Belt
- EPSG:5181KGD2002 / Central Belt
- EPSG:5182KGD2002 / Central Belt Jeju
- EPSG:5183KGD2002 / East Belt
- EPSG:5184KGD2002 / East Sea Belt
- EPSG:5185KGD2002 / West Belt 2010
- EPSG:5186KGD2002 / Central Belt 2010
- EPSG:5187KGD2002 / East Belt 2010
Source: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.