EPSG:2406 Beijing 1954 / 3-degree Gauss-Kruger zone 30
Projected system (Transverse Mercator) in use: China - 88.5°E to 91.5°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:2406 |
|---|---|
| Name | Beijing 1954 / 3-degree Gauss-Kruger zone 30 |
| Type | Projected system — Transverse Mercator |
| Area of use |
China - 88.5°E to 91.5°E China - between 88°30'E and 91°30'E. |
| Bounds | W 88,49° · S 27,32° · E 91,51° · N 48,42° |
| Countries | China |
| Datum | Beijing 1954 |
| Ellipsoid | Krassowsky 1940 a = 6378245 m · 1/f = 298.3 |
| Base geographic system | EPSG:4214 — Beijing 1954 |
| 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 | 90 | degree |
| Scale factor at natural origin | 1 | unity |
| False easting | 30500000 | metre |
| False northing | 0 | metre |
proj4 definition
+proj=tmerc +lat_0=0 +lon_0=90 +k=1 +x_0=30500000 +y_0=0 +ellps=krass +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:2406.
WKT (ESRI format, the .prj content)
PROJCS["Beijing_1954_3_Degree_GK_Zone_30",GEOGCS["GCS_Beijing_1954",DATUM["D_Beijing_1954",SPHEROID["Krasovsky_1940",6378245.0,298.3]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Gauss_Kruger"],PARAMETER["False_Easting",30500000.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",90.0],PARAMETER["Scale_Factor",1.0],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0]]Other systems — China
- EPSG:2401Beijing 1954 / 3-degree Gauss-Kruger zone 25
- EPSG:2402Beijing 1954 / 3-degree Gauss-Kruger zone 26
- EPSG:2403Beijing 1954 / 3-degree Gauss-Kruger zone 27
- EPSG:2404Beijing 1954 / 3-degree Gauss-Kruger zone 28
- EPSG:2405Beijing 1954 / 3-degree Gauss-Kruger zone 29
- EPSG:2407Beijing 1954 / 3-degree Gauss-Kruger zone 31
- EPSG:2408Beijing 1954 / 3-degree Gauss-Kruger zone 32
- EPSG:2409Beijing 1954 / 3-degree Gauss-Kruger zone 33
- EPSG:2410Beijing 1954 / 3-degree Gauss-Kruger zone 34
- EPSG:2411Beijing 1954 / 3-degree Gauss-Kruger zone 35
- EPSG:2412Beijing 1954 / 3-degree Gauss-Kruger zone 36
- EPSG:2413Beijing 1954 / 3-degree Gauss-Kruger zone 37
- EPSG:2414Beijing 1954 / 3-degree Gauss-Kruger zone 38
- EPSG:2415Beijing 1954 / 3-degree Gauss-Kruger zone 39
- EPSG:2416Beijing 1954 / 3-degree Gauss-Kruger zone 40
- EPSG:2417Beijing 1954 / 3-degree Gauss-Kruger zone 41
- EPSG:2418Beijing 1954 / 3-degree Gauss-Kruger zone 42
- EPSG:2419Beijing 1954 / 3-degree Gauss-Kruger zone 43
Source: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.