EPSG:4149

CH1903

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Available transformations
to EPSG:11307
EPSG:11307 - ETRS89-CHE [CHTRF95]

Selected transformation

Name: CH1903 to ETRS89-CHE [CHTRF95] (2)

Method: NTv2

Grid Files: CHENyx06_ETRS.gsb

Remarks: Equivalent to concatenation of CTs 15486 (CH1903 to CH1903+) and 1647 (CH1903+ to ETRS89-CHE [CHTRF95]). Approximates official FINELTRA application to within 2cm. Also documented as CT between CH1903 and CHTRS95 (see code 7673). Replaces CT code 1646. May be used as approximate CT CH1903 to WGS 84, see code 7788.

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

Revision date: 2026-02-10

Attributes

Unit: degree (supplier to define representation)

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: Geodesy.

Remarks: Replaced by CH1903+.

Area of use: Liechtenstein; Switzerland.

Coordinate system: Ellipsoidal 2D CS. Axes: latitude, longitude. Orientations: north, east. UoM: degree

Covered area powered by MapTiler MapTiler logo
SimpleMap

Center coordinates
8.23 46.81

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[
        GEOGCRS["CH1903",
            DATUM["CH1903",
                ELLIPSOID["Bessel 1841",6377397.155,299.1528128,
                    LENGTHUNIT["metre",1]]],
            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["Geodesy."],
                AREA["Liechtenstein; Switzerland."],
                BBOX[45.81,5.95,47.81,10.5]],
            ID["EPSG",4149],
            REMARK["Replaced by CH1903+."]]],
    TARGETCRS[
        GEOGCRS["ETRS89-CHE [CHTRF95]",
            DATUM["Swiss Terrestrial Reference Frame 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",11307],
            REMARK["First realization of CHTRS95. For CRS used for topographic and cadastral purposes see CH1903+ (CRS code 4150)."]]],
    ABRIDGEDTRANSFORMATION["CH1903 to ETRS89-CHE [CHTRF95] (2)",
        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",7674],
        REMARK["Equivalent to concatenation of CTs 15486 (CH1903 to CH1903+) and 1647 (CH1903+ to ETRS89-CHE [CHTRF95]). Approximates official FINELTRA application to within 2cm. Also documented as CT between CH1903 and CHTRS95 (see code 7673). Replaces CT code 1646. May be used as approximate CT CH1903 to WGS 84, see code 7788."]]]

Definition: PROJ.4

+proj=longlat +ellps=bessel +no_defs +type=crs

Definition: JavaScript (Proj4js) 

proj4.defs("EPSG:4149","+proj=longlat +ellps=bessel +no_defs +type=crs");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "BoundCRS",
    "source_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+."
    },
    "target_crs": {
        "type": "GeographicCRS",
        "name": "ETRS89-CHE [CHTRF95]",
        "datum": {
            "type": "GeodeticReferenceFrame",
            "name": "Swiss Terrestrial Reference Frame 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": 11307
        },
        "remarks": "First realization of CHTRS95. For CRS used for topographic and cadastral purposes see CH1903+ (CRS code 4150)."
    },
    "transformation": {
        "name": "CH1903 to ETRS89-CHE [CHTRF95] (2)",
        "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": 7674
        }
    }
}

Definition: MapServer - MAPfile

PROJECTION
	"proj=longlat"
	"ellps=bessel"
	"no_defs"
	"type=crs"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=longlat +ellps=bessel +no_defs +type=crs">
	<Layer srs="+proj=longlat +ellps=bessel +no_defs +type=crs">
	</Layer>
</Map>