EPSG:21782

CH1903 / LV03C-G

Transform Get position on a map

Available transformations
to EPSG:4151
EPSG:4151 - ETRS89-CHE [CHTRS95]

Selected transformation

Name: CH1903 to ETRS89-CHE [CHTRS95] (1)

Method: NTv2

Grid Files: CHENyx06_ETRS.gsb

Remarks: Equivalent to concatenation of transformations 15486 (CH1903 to CH1903+) and 1509 (CH1903+ to CHTRF95). Approximates official FINELTRA application to within 2cm. Also documented as transformation between CH1903 and ensemble-based ETRS89 (see code 7674).

Information source: Bundesamt für Landestopografie swisstopo; https://www.swisstopo.ch

Revision date: 2026-07-21

Attributes

Unit: metre

Geodetic CRS: CH1903

Datum: CH1903

Ellipsoid: Bessel 1841

Prime meridian: Greenwich

Data source: EPSG

Information source: Bundesamt für Landestopografie swisstopo; www.swisstopo.ch

Revision date: 2015-11-25

Scope: Cadastre, engineering survey, topographic mapping (large and medium scale).

Remarks: Greenwich-based equivalent of LV03C (CRS code 21780).

Area of use: Liechtenstein.

Coordinate system: Cartesian 2D CS. Axes: easting, northing (Y,X). Orientations: east, north. UoM: m.

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SimpleMap

Center coordinates
60018.56 -15383.63

Projected bounds:
-115726.21 -126849.85
237938.97 99971.16

WGS84 bounds:
5.95 45.81
10.5 47.81

Liechtenstein; Switzerland.
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Definition: OGC Well Known Text 2 (2019)

BOUNDCRS[
    SOURCECRS[
        PROJCRS["CH1903 / LV03C-G",
            BASEGEOGCRS["CH1903",
                DATUM["CH1903",
                    ELLIPSOID["Bessel 1841",6377397.155,299.1528128,
                        LENGTHUNIT["metre",1]]],
                PRIMEM["Greenwich",0,
                    ANGLEUNIT["degree",0.0174532925199433]],
                ID["EPSG",4149]],
            CONVERSION["Swiss Oblique Mercator 1903C (Greenwich)",
                METHOD["Hotine Oblique Mercator (variant B)",
                    ID["EPSG",9815]],
                PARAMETER["Latitude of projection centre",46.9524055555556,
                    ANGLEUNIT["degree",0.0174532925199433],
                    ID["EPSG",8811]],
                PARAMETER["Longitude of projection centre",7.43958333333333,
                    ANGLEUNIT["degree",0.0174532925199433],
                    ID["EPSG",8812]],
                PARAMETER["Azimuth at projection centre",90,
                    ANGLEUNIT["degree",0.0174532925199433],
                    ID["EPSG",8813]],
                PARAMETER["Angle from Rectified to Skew Grid",90,
                    ANGLEUNIT["degree",0.0174532925199433],
                    ID["EPSG",8814]],
                PARAMETER["Scale factor at projection centre",1,
                    SCALEUNIT["unity",1],
                    ID["EPSG",8815]],
                PARAMETER["Easting at projection centre",0,
                    LENGTHUNIT["metre",1],
                    ID["EPSG",8816]],
                PARAMETER["Northing at projection centre",0,
                    LENGTHUNIT["metre",1],
                    ID["EPSG",8817]]],
            CS[Cartesian,2],
                AXIS["easting (Y)",east,
                    ORDER[1],
                    LENGTHUNIT["metre",1]],
                AXIS["northing (X)",north,
                    ORDER[2],
                    LENGTHUNIT["metre",1]],
            USAGE[
                SCOPE["Cadastre, engineering survey, topographic mapping (large and medium scale)."],
                AREA["Liechtenstein."],
                BBOX[47.05,9.47,47.28,9.64]],
            ID["EPSG",21782]]],
    TARGETCRS[
        GEOGCRS["ETRS89-CHE [CHTRS95]",
            DATUM["Swiss Terrestrial Reference System 1995",
                ELLIPSOID["GRS 1980",6378137,298.257222101,
                    LENGTHUNIT["metre",1]],
                ANCHOREPOCH[1993]],
            PRIMEM["Greenwich",0,
                ANGLEUNIT["degree",0.0174532925199433]],
            CS[ellipsoidal,2],
                AXIS["geodetic latitude (Lat)",north,
                    ORDER[1],
                    ANGLEUNIT["degree",0.0174532925199433]],
                AXIS["geodetic longitude (Lon)",east,
                    ORDER[2],
                    ANGLEUNIT["degree",0.0174532925199433]],
            USAGE[
                SCOPE["Horizontal component of 3D system."],
                AREA["Liechtenstein; Switzerland."],
                BBOX[45.81,5.95,47.81,10.5]],
            ID["EPSG",4151],
            REMARK["First realized through CHTRF95 and subsequently CHTRF98, with an aim to re-measure every 6 years. CHTRF98, CHTRF2004, CHTRF2010 and CHTRF2016 are all within 2cm of CHTRF95 and used for scientific applications, but for most practical purposes differences are considered insignificant. For CRS used for topographic and cadastral purposes see CH1903+ (CRS code 4150)."]]],
    ABRIDGEDTRANSFORMATION["CH1903 to ETRS89-CHE [CHTRS95] (1)",
        METHOD["NTv2",
            ID["EPSG",9615]],
        PARAMETERFILE["Latitude and longitude difference file","CHENyx06_ETRS.gsb"],
        USAGE[
            SCOPE["Approximation (to better than 2cm) using NTv2 method of results of FINELTRA programme concatenated with LV-95 parameters."],
            AREA["Liechtenstein; Switzerland."],
            BBOX[45.81,5.95,47.81,10.5]],
        ID["EPSG",7673],
        REMARK["Equivalent to concatenation of transformations 15486 (CH1903 to CH1903+) and 1509 (CH1903+ to CHTRF95). Approximates official FINELTRA application to within 2cm. Also documented as transformation between CH1903 and ensemble-based ETRS89 (see code 7674)."]]]

Definition: PROJ.4

+proj=somerc +lat_0=46.9524055555556 +lon_0=7.43958333333333 +k_0=1 +x_0=0 +y_0=0 +ellps=bessel +units=m +no_defs +type=crs

Definition: JavaScript (Proj4js) 

proj4.defs("EPSG:21782","+proj=somerc +lat_0=46.9524055555556 +lon_0=7.43958333333333 +k_0=1 +x_0=0 +y_0=0 +ellps=bessel +units=m +no_defs +type=crs");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "BoundCRS",
    "source_crs": {
        "type": "ProjectedCRS",
        "name": "CH1903 / LV03C-G",
        "base_crs": {
            "type": "GeographicCRS",
            "name": "CH1903",
            "datum": {
                "type": "GeodeticReferenceFrame",
                "name": "CH1903",
                "ellipsoid": {
                    "name": "Bessel 1841",
                    "semi_major_axis": 6377397.155,
                    "inverse_flattening": 299.1528128
                }
            },
            "coordinate_system": {
                "subtype": "ellipsoidal",
                "axis": [
                    {
                        "name": "Geodetic latitude",
                        "abbreviation": "Lat",
                        "direction": "north",
                        "unit": "degree"
                    },
                    {
                        "name": "Geodetic longitude",
                        "abbreviation": "Lon",
                        "direction": "east",
                        "unit": "degree"
                    }
                ]
            },
            "id": {
                "authority": "EPSG",
                "code": 4149
            },
            "remarks": "Replaced by CH1903+."
        },
        "conversion": {
            "name": "Swiss Oblique Mercator 1903C (Greenwich)",
            "method": {
                "name": "Hotine Oblique Mercator (variant B)",
                "id": {
                    "authority": "EPSG",
                    "code": 9815
                }
            },
            "parameters": [
                {
                    "name": "Latitude of projection centre",
                    "value": 46.9524055555556,
                    "unit": "degree",
                    "id": {
                        "authority": "EPSG",
                        "code": 8811
                    }
                },
                {
                    "name": "Longitude of projection centre",
                    "value": 7.43958333333333,
                    "unit": "degree",
                    "id": {
                        "authority": "EPSG",
                        "code": 8812
                    }
                },
                {
                    "name": "Azimuth at projection centre",
                    "value": 90,
                    "unit": "degree",
                    "id": {
                        "authority": "EPSG",
                        "code": 8813
                    }
                },
                {
                    "name": "Angle from Rectified to Skew Grid",
                    "value": 90,
                    "unit": "degree",
                    "id": {
                        "authority": "EPSG",
                        "code": 8814
                    }
                },
                {
                    "name": "Scale factor at projection centre",
                    "value": 1,
                    "unit": "unity",
                    "id": {
                        "authority": "EPSG",
                        "code": 8815
                    }
                },
                {
                    "name": "Easting at projection centre",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                        "authority": "EPSG",
                        "code": 8816
                    }
                },
                {
                    "name": "Northing at projection centre",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                        "authority": "EPSG",
                        "code": 8817
                    }
                }
            ]
        },
        "coordinate_system": {
            "subtype": "Cartesian",
            "axis": [
                {
                    "name": "Easting",
                    "abbreviation": "Y",
                    "direction": "east",
                    "unit": "metre"
                },
                {
                    "name": "Northing",
                    "abbreviation": "X",
                    "direction": "north",
                    "unit": "metre"
                }
            ]
        },
        "id": {
            "authority": "EPSG",
            "code": 21782
        }
    },
    "target_crs": {
        "type": "GeographicCRS",
        "name": "ETRS89-CHE [CHTRS95]",
        "datum": {
            "type": "GeodeticReferenceFrame",
            "name": "Swiss Terrestrial Reference System 1995",
            "anchor_epoch": 1993,
            "ellipsoid": {
                "name": "GRS 1980",
                "semi_major_axis": 6378137,
                "inverse_flattening": 298.257222101
            }
        },
        "coordinate_system": {
            "subtype": "ellipsoidal",
            "axis": [
                {
                    "name": "Geodetic latitude",
                    "abbreviation": "Lat",
                    "direction": "north",
                    "unit": "degree"
                },
                {
                    "name": "Geodetic longitude",
                    "abbreviation": "Lon",
                    "direction": "east",
                    "unit": "degree"
                }
            ]
        },
        "id": {
            "authority": "EPSG",
            "code": 4151
        },
        "remarks": "First realized through CHTRF95 and subsequently CHTRF98, with an aim to re-measure every 6 years. CHTRF98, CHTRF2004, CHTRF2010 and CHTRF2016 are all within 2cm of CHTRF95 and used for scientific applications, but for most practical purposes differences are considered insignificant. For CRS used for topographic and cadastral purposes see CH1903+ (CRS code 4150)."
    },
    "transformation": {
        "name": "CH1903 to ETRS89-CHE [CHTRS95] (1)",
        "method": {
            "name": "NTv2",
            "id": {
                "authority": "EPSG",
                "code": 9615
            }
        },
        "parameters": [
            {
                "name": "Latitude and longitude difference file",
                "value": "CHENyx06_ETRS.gsb",
                "id": {
                    "authority": "EPSG",
                    "code": 8656
                }
            }
        ],
        "id": {
            "authority": "EPSG",
            "code": 7673
        }
    }
}

Definition: MapServer - MAPfile

PROJECTION
	"proj=somerc"
	"lat_0=46.9524055555556"
	"lon_0=7.43958333333333"
	"k_0=1"
	"x_0=0"
	"y_0=0"
	"ellps=bessel"
	"units=m"
	"no_defs"
	"type=crs"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=somerc +lat_0=46.9524055555556 +lon_0=7.43958333333333 +k_0=1 +x_0=0 +y_0=0 +ellps=bessel +units=m +no_defs +type=crs">
	<Layer srs="+proj=somerc +lat_0=46.9524055555556 +lon_0=7.43958333333333 +k_0=1 +x_0=0 +y_0=0 +ellps=bessel +units=m +no_defs +type=crs">
	</Layer>
</Map>