EPSG:2372 Xian 1980 / 3-degree Gauss-Kruger CM 81E
Projected system (Transverse Mercator) in use: China - 79.5°E to 82.5°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:2372 |
|---|---|
| Name | Xian 1980 / 3-degree Gauss-Kruger CM 81E |
| Type | Projected system — Transverse Mercator |
| Area of use |
China - 79.5°E to 82.5°E China - between 79°30'E and 82°30'E. |
| Bounds | W 79,50° · S 29,95° · E 82,51° · N 45,88° |
| 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 | 81 | degree |
| Scale factor at natural origin | 1 | unity |
| False easting | 500000 | metre |
| False northing | 0 | metre |
proj4 definition
+proj=tmerc +lat_0=0 +lon_0=81 +k=1 +x_0=500000 +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:2372.
WKT (ESRI format, the .prj content)
PROJCS["Xian_1980_3_Degree_GK_CM_81E",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",500000.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",81.0],PARAMETER["Scale_Factor",1.0],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0]]Other systems — China
- EPSG:2363Xian 1980 / 3-degree Gauss-Kruger zone 39
- EPSG:2364Xian 1980 / 3-degree Gauss-Kruger zone 40
- EPSG:2365Xian 1980 / 3-degree Gauss-Kruger zone 41
- EPSG:2366Xian 1980 / 3-degree Gauss-Kruger zone 42
- EPSG:2367Xian 1980 / 3-degree Gauss-Kruger zone 43
- EPSG:2368Xian 1980 / 3-degree Gauss-Kruger zone 44
- EPSG:2369Xian 1980 / 3-degree Gauss-Kruger zone 45
- EPSG:2370Xian 1980 / 3-degree Gauss-Kruger CM 75E
- EPSG:2371Xian 1980 / 3-degree Gauss-Kruger CM 78E
- EPSG:2373Xian 1980 / 3-degree Gauss-Kruger CM 84E
- EPSG:2374Xian 1980 / 3-degree Gauss-Kruger CM 87E
- EPSG:2375Xian 1980 / 3-degree Gauss-Kruger CM 90E
- EPSG:2376Xian 1980 / 3-degree Gauss-Kruger CM 93E
- EPSG:2377Xian 1980 / 3-degree Gauss-Kruger CM 96E
- EPSG:2378Xian 1980 / 3-degree Gauss-Kruger CM 99E
- EPSG:2379Xian 1980 / 3-degree Gauss-Kruger CM 102E
- EPSG:2380Xian 1980 / 3-degree Gauss-Kruger CM 105E
- EPSG:2381Xian 1980 / 3-degree Gauss-Kruger CM 108E
Source: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.