ETRS89-CHE [CHTRS95]

Attributes

Unit: degree (supplier to define representation)

Geodetic CRS: ETRS89-CHE [CHTRS95]

Datum: Swiss Terrestrial Reference System 1995

Ellipsoid: GRS 1980

Prime meridian: Greenwich

Data source: EPSG

Information source: EPSG. See 3D CRS for original information source.

Revision date: 2026-07-21

Scope: Horizontal component of 3D system.

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).

Area of use: Liechtenstein; Switzerland.

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

Covered area powered by MapTiler

Center coordinates
8.22 46.81

WGS84 bounds:
5.95 45.81
10.5 47.81

Liechtenstein; Switzerland.

Definition: OGC Well Known Text

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GEOGCS["ETRS89-CHE [CHTRS95]",
    DATUM["Swiss_Terrestrial_Reference_System_1995",
        SPHEROID["GRS 1980",6378137,298.257222101,
            AUTHORITY["EPSG","7019"]],
        AUTHORITY["EPSG","6151"]],
    PRIMEM["Greenwich",0,
        AUTHORITY["EPSG","8901"]],
    UNIT["degree",0.0174532925199433,
        AUTHORITY["EPSG","9122"]],
    AUTHORITY["EPSG","4151"]]

Definition: OGC Well Known Text 2 (2019)

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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)."]]

Definition: ESRI Well Known Text

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GEOGCS["GCS_Swiss_TRF_1995",
    DATUM["D_Swiss_TRF_1995",
        SPHEROID["GRS_1980",6378137.0,298.257222101]],
    PRIMEM["Greenwich",0.0],
    UNIT["Degree",0.0174532925199433]]

Definition: PROJ.4

+proj=longlat +ellps=GRS80 +no_defs +type=crs

Definition: JavaScript (Proj4js)

proj4.defs("EPSG:4151","+proj=longlat +ellps=GRS80 +no_defs +type=crs");

Definition: JSON

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{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "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"
            }
        ]
    },
    "scope": "Horizontal component of 3D system.",
    "area": "Liechtenstein; Switzerland.",
    "bbox": {
        "south_latitude": 45.81,
        "west_longitude": 5.95,
        "north_latitude": 47.81,
        "east_longitude": 10.5
    },
    "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)."
}

Definition: GeoServer

4151=GEOGCS["ETRS89-CHE [CHTRS95]",DATUM["Swiss_Terrestrial_Reference_System_1995",SPHEROID["GRS 1980",6378137,298.257222101,AUTHORITY["EPSG","7019"]],AUTHORITY["EPSG","6151"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4151"]]

Definition: MapServer - MAPfile

PROJECTION
	"proj=longlat"
	"ellps=GRS80"
	"no_defs"
	"type=crs"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=longlat +ellps=GRS80 +no_defs +type=crs">
	<Layer srs="+proj=longlat +ellps=GRS80 +no_defs +type=crs">
	</Layer>
</Map>

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 4151, 'EPSG', 4151, '+proj=longlat +ellps=GRS80 +no_defs +type=crs', 'GEOGCS["ETRS89-CHE [CHTRS95]",DATUM["Swiss_Terrestrial_Reference_System_1995",SPHEROID["GRS 1980",6378137,298.257222101,AUTHORITY["EPSG","7019"]],AUTHORITY["EPSG","6151"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4151"]]');

EPSG:4151