EPSG:21780 CH1903 (Bern) / LV03C
Projected system (Hotine Oblique Mercator (variant B)) in use: Europe - Liechtenstein and Switzerland. 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:21780 |
|---|---|
| Name | CH1903 (Bern) / LV03C |
| Type | Projected system — Hotine Oblique Mercator (variant B) |
| Area of use |
Europe - Liechtenstein and Switzerland Liechtenstein; Switzerland. |
| Bounds | W 5,96° · S 45,82° · E 10,49° · N 47,81° |
| Countries | Liechtenstein, Switzerland |
| Datum | CH1903 (Bern) |
| Ellipsoid | Bessel 1841 a = 6377397.155 m · 1/f = 299.1528128 |
| Prime meridian | Bern 7.439583333333333 degree |
| Base geographic system | EPSG:4801 — CH1903 (Bern) |
| Unit | metre (Y east, X north) |
| Transformation to WGS 84 | No simple transformation published (ellipsoid alone) |
| Scope | Engineering survey, topographic mapping. |
Projection parameters
| Parameter | Value | Unit |
|---|---|---|
| Latitude of projection centre | 46.95240555555556 | degree |
| Longitude of projection centre | 0 | degree |
| Azimuth at projection centre | 90 | degree |
| Angle from Rectified to Skew Grid | 90 | degree |
| Scale factor at projection centre | 1 | unity |
| Easting at projection centre | 0 | metre |
| Northing at projection centre | 0 | metre |
proj4 definition
+proj=somerc +lat_0=46.9524055555556 +lon_0=0 +k_0=1 +x_0=0 +y_0=0 +ellps=bessel +pm=bern +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:21780.
WKT (ESRI format, the .prj content)
PROJCS["Bern_1898_Bern_LV03C",GEOGCS["GCS_Bern_1898_Bern",DATUM["CH1903_(Bern)",SPHEROID["Bessel_1841",6377397.155,299.1528128]],PRIMEM["Bern",7.43958333333333],UNIT["Degree",0.0174532925199433]],PROJECTION["Hotine_Oblique_Mercator_Azimuth_Center"],PARAMETER["False_Easting",0.0],PARAMETER["False_Northing",0.0],PARAMETER["Scale_Factor",1.0],PARAMETER["Azimuth",90.0],PARAMETER["Longitude_Of_Center",0.0],PARAMETER["Latitude_Of_Center",46.9524055555556],UNIT["Meter",1.0]]Other systems — Liechtenstein
Source: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.