EPSG:2349 Xian 1980 / 3-degree Gauss-Kruger zone 25
Projected system (Transverse Mercator) in use: China - west of 76.5°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:2349 |
|---|---|
| Name | Xian 1980 / 3-degree Gauss-Kruger zone 25 |
| Type | Projected system — Transverse Mercator |
| Area of use |
China - west of 76.5°E China - west of 76°30'E. |
| Bounds | W 73,62° · S 35,81° · E 76,50° · N 40,65° |
| Countries | China |
| Datum | Xian 1980 |
| Ellipsoid | IAG 1975 a = 6378140 m · 1/f = 298.257 |
| Base geographic system | EPSG:4610 — Xian 1980 |
| Unit | metre (X north, Y east) |
| Transformation to WGS 84 | No simple transformation published (ellipsoid alone) |
| Scope | Cadastre, engineering survey, topographic mapping (large scale). |
Projection parameters
| Parameter | Value | Unit |
|---|---|---|
| Latitude of natural origin | 0 | degree |
| Longitude of natural origin | 75 | degree |
| Scale factor at natural origin | 1 | unity |
| False easting | 25500000 | metre |
| False northing | 0 | metre |
proj4 definition
+proj=tmerc +lat_0=0 +lon_0=75 +k=1 +x_0=25500000 +y_0=0 +ellps=IAU76 +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:2349.
WKT (ESRI format, the .prj content)
PROJCS["Xian_1980_3_Degree_GK_Zone_25",GEOGCS["GCS_Xian_1980",DATUM["D_Xian_1980",SPHEROID["Xian_1980",6378140.0,298.257]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Gauss_Kruger"],PARAMETER["False_Easting",25500000.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",75.0],PARAMETER["Scale_Factor",1.0],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0]]Other systems — China
- EPSG:2340Xian 1980 / Gauss-Kruger CM 87E
- EPSG:2341Xian 1980 / Gauss-Kruger CM 93E
- EPSG:2342Xian 1980 / Gauss-Kruger CM 99E
- EPSG:2343Xian 1980 / Gauss-Kruger CM 105E
- EPSG:2344Xian 1980 / Gauss-Kruger CM 111E
- EPSG:2345Xian 1980 / Gauss-Kruger CM 117E
- EPSG:2346Xian 1980 / Gauss-Kruger CM 123E
- EPSG:2347Xian 1980 / Gauss-Kruger CM 129E
- EPSG:2348Xian 1980 / Gauss-Kruger CM 135E
- EPSG:2350Xian 1980 / 3-degree Gauss-Kruger zone 26
- EPSG:2351Xian 1980 / 3-degree Gauss-Kruger zone 27
- EPSG:2352Xian 1980 / 3-degree Gauss-Kruger zone 28
- EPSG:2353Xian 1980 / 3-degree Gauss-Kruger zone 29
- EPSG:2354Xian 1980 / 3-degree Gauss-Kruger zone 30
- EPSG:2355Xian 1980 / 3-degree Gauss-Kruger zone 31
- EPSG:2356Xian 1980 / 3-degree Gauss-Kruger zone 32
- EPSG:2357Xian 1980 / 3-degree Gauss-Kruger zone 33
- EPSG:2358Xian 1980 / 3-degree Gauss-Kruger zone 34
Source: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.