EPSG:11173

ETRS89-FIN [EUREF-FIN] / GK23FIN + N2000 height

Attributes

Geodetic CRS: ETRS89-FIN [EUREF-FIN] / GK23FIN + N2000 height

Data source: EPSG

Information source: National Land Survey of Finland; http://www.maanmittauslaitos.fi

Revision date: 2025-10-28

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

Area of use: Finland - nominally onshore between 22°30'E and 23°30'E but may be used in adjacent areas if a municipality chooses to use one zone over its whole extent.

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SimpleMap

Center coordinates
500000.0 7127166.52

Projected bounds:
471889.95 6626220.28
528110.05 7628505.09

WGS84 bounds:
22.5 59.75
23.5 68.74

Finland - nominally onshore between 22°30'E and 23°30'E but may be used in adjacent areas if a municipality chooses to use one zone over its whole extent.
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Definition: OGC Well Known Text

COMPD_CS["ETRS89-FIN [EUREF-FIN] / GK23FIN + N2000 height",
    PROJCS["ETRS89-FIN [EUREF-FIN] / ETRS-GK23FIN",
        GEOGCS["ETRS89-FIN [EUREF-FIN]",
            DATUM["EUREF-FIN",
                SPHEROID["GRS 1980",6378137,298.257222101,
                    AUTHORITY["EPSG","7019"]],
                AUTHORITY["EPSG","1391"]],
            PRIMEM["Greenwich",0,
                AUTHORITY["EPSG","8901"]],
            UNIT["degree",0.0174532925199433,
                AUTHORITY["EPSG","9122"]],
            AUTHORITY["EPSG","10690"]],
        PROJECTION["Transverse_Mercator"],
        PARAMETER["latitude_of_origin",0],
        PARAMETER["central_meridian",23],
        PARAMETER["scale_factor",1],
        PARAMETER["false_easting",500000],
        PARAMETER["false_northing",0],
        UNIT["metre",1,
            AUTHORITY["EPSG","9001"]],
        AUTHORITY["EPSG","3130"]],
    VERT_CS["N2000 height",
        VERT_DATUM["N2000",2005,
            AUTHORITY["EPSG","1030"]],
        UNIT["metre",1,
            AUTHORITY["EPSG","9001"]],
        AXIS["Gravity-related height",UP],
        AUTHORITY["EPSG","3900"]],
    AUTHORITY["EPSG","11173"]]

Definition: OGC Well Known Text 2 (2019)

COMPOUNDCRS["ETRS89-FIN [EUREF-FIN] / GK23FIN + N2000 height",
    PROJCRS["ETRS89-FIN [EUREF-FIN] / ETRS-GK23FIN",
        BASEGEOGCRS["ETRS89-FIN [EUREF-FIN]",
            DATUM["EUREF-FIN",
                ELLIPSOID["GRS 1980",6378137,298.257222101,
                    LENGTHUNIT["metre",1]],
                ANCHOREPOCH[1997]],
            PRIMEM["Greenwich",0,
                ANGLEUNIT["degree",0.0174532925199433]],
            ID["EPSG",10690]],
        CONVERSION["Finland ETRS-GK23",
            METHOD["Transverse Mercator",
                ID["EPSG",9807]],
            PARAMETER["Latitude of natural origin",0,
                ANGLEUNIT["degree",0.0174532925199433],
                ID["EPSG",8801]],
            PARAMETER["Longitude of natural origin",23,
                ANGLEUNIT["degree",0.0174532925199433],
                ID["EPSG",8802]],
            PARAMETER["Scale factor at natural origin",1,
                SCALEUNIT["unity",1],
                ID["EPSG",8805]],
            PARAMETER["False easting",500000,
                LENGTHUNIT["metre",1],
                ID["EPSG",8806]],
            PARAMETER["False northing",0,
                LENGTHUNIT["metre",1],
                ID["EPSG",8807]]],
        CS[Cartesian,2],
            AXIS["northing (N)",north,
                ORDER[1],
                LENGTHUNIT["metre",1]],
            AXIS["easting (E)",east,
                ORDER[2],
                LENGTHUNIT["metre",1]]],
    VERTCRS["N2000 height",
        VDATUM["N2000"],
        CS[vertical,1],
            AXIS["gravity-related height (H)",up,
                LENGTHUNIT["metre",1]]],
    USAGE[
        SCOPE["Cadastre, engineering survey, topographic mapping (large scale)."],
        AREA["Finland - nominally onshore between 22°30'E and 23°30'E but may be used in adjacent areas if a municipality chooses to use one zone over its whole extent."],
        BBOX[59.75,22.5,68.74,23.5]],
    ID["EPSG",11173]]

Definition: ESRI Well Known Text

PROJCS["EUREF-FIN_ETRS-GK23FIN",
    GEOGCS["GCS_EUREF_FIN",
        DATUM["EUREF-FIN",
            SPHEROID["GRS_1980",6378137.0,298.257222101]],
        PRIMEM["Greenwich",0.0],
        UNIT["Degree",0.0174532925199433]],
    PROJECTION["Transverse_Mercator"],
    PARAMETER["False_Easting",500000.0],
    PARAMETER["False_Northing",0.0],
    PARAMETER["Central_Meridian",23.0],
    PARAMETER["Scale_Factor",1.0],
    PARAMETER["Latitude_Of_Origin",0.0],
    UNIT["Meter",1.0]],
VERTCS["N2000_height",
    VDATUM["N2000"],
    PARAMETER["Vertical_Shift",0.0],
    PARAMETER["Direction",1.0],
    UNIT["Meter",1.0]]

Definition: PROJ.4

+proj=tmerc +lat_0=0 +lon_0=23 +k=1 +x_0=500000 +y_0=0 +ellps=GRS80 +units=m +vunits=m +no_defs +type=crs

Definition: JavaScript (Proj4js) 

proj4.defs("EPSG:11173","+proj=tmerc +lat_0=0 +lon_0=23 +k=1 +x_0=500000 +y_0=0 +ellps=GRS80 +units=m +vunits=m +no_defs +type=crs");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "CompoundCRS",
    "name": "ETRS89-FIN [EUREF-FIN] / GK23FIN + N2000 height",
    "components": [
        {
            "type": "ProjectedCRS",
            "name": "ETRS89-FIN [EUREF-FIN] / ETRS-GK23FIN",
            "base_crs": {
                "type": "GeographicCRS",
                "name": "ETRS89-FIN [EUREF-FIN]",
                "datum": {
                    "type": "GeodeticReferenceFrame",
                    "name": "EUREF-FIN",
                    "anchor_epoch": 1997,
                    "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": 10690
                },
                "remarks": "EUREF-FIN is the national realization of ETRS89 in Finland."
            },
            "conversion": {
                "name": "Finland ETRS-GK23",
                "method": {
                    "name": "Transverse Mercator",
                    "id": {
                        "authority": "EPSG",
                        "code": 9807
                    }
                },
                "parameters": [
                    {
                        "name": "Latitude of natural origin",
                        "value": 0,
                        "unit": "degree",
                        "id": {
                            "authority": "EPSG",
                            "code": 8801
                        }
                    },
                    {
                        "name": "Longitude of natural origin",
                        "value": 23,
                        "unit": "degree",
                        "id": {
                            "authority": "EPSG",
                            "code": 8802
                        }
                    },
                    {
                        "name": "Scale factor at natural origin",
                        "value": 1,
                        "unit": "unity",
                        "id": {
                            "authority": "EPSG",
                            "code": 8805
                        }
                    },
                    {
                        "name": "False easting",
                        "value": 500000,
                        "unit": "metre",
                        "id": {
                            "authority": "EPSG",
                            "code": 8806
                        }
                    },
                    {
                        "name": "False northing",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                            "authority": "EPSG",
                            "code": 8807
                        }
                    }
                ]
            },
            "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                    {
                        "name": "Northing",
                        "abbreviation": "N",
                        "direction": "north",
                        "unit": "metre"
                    },
                    {
                        "name": "Easting",
                        "abbreviation": "E",
                        "direction": "east",
                        "unit": "metre"
                    }
                ]
            }
        },
        {
            "type": "VerticalCRS",
            "name": "N2000 height",
            "datum": {
                "type": "VerticalReferenceFrame",
                "name": "N2000"
            },
            "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                    {
                        "name": "Gravity-related height",
                        "abbreviation": "H",
                        "direction": "up",
                        "unit": "metre"
                    }
                ]
            }
        }
    ],
    "scope": "Cadastre, engineering survey, topographic mapping (large scale).",
    "area": "Finland - nominally onshore between 22°30'E and 23°30'E but may be used in adjacent areas if a municipality chooses to use one zone over its whole extent.",
    "bbox": {
        "south_latitude": 59.75,
        "west_longitude": 22.5,
        "north_latitude": 68.74,
        "east_longitude": 23.5
    },
    "id": {
        "authority": "EPSG",
        "code": 11173
    }
}

Definition: GeoServer

11173=COMPD_CS["ETRS89-FIN [EUREF-FIN] / GK23FIN + N2000 height",PROJCS["ETRS89-FIN [EUREF-FIN] / ETRS-GK23FIN",GEOGCS["ETRS89-FIN [EUREF-FIN]",DATUM["EUREF-FIN",SPHEROID["GRS 1980",6378137,298.257222101,AUTHORITY["EPSG","7019"]],AUTHORITY["EPSG","1391"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","10690"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",23],PARAMETER["scale_factor",1],PARAMETER["false_easting",500000],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","3130"]],VERT_CS["N2000 height",VERT_DATUM["N2000",2005,AUTHORITY["EPSG","1030"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Gravity-related height",UP],AUTHORITY["EPSG","3900"]],AUTHORITY["EPSG","11173"]]

Definition: MapServer - MAPfile

PROJECTION
	"proj=tmerc"
	"lat_0=0"
	"lon_0=23"
	"k=1"
	"x_0=500000"
	"y_0=0"
	"ellps=GRS80"
	"units=m"
	"vunits=m"
	"no_defs"
	"type=crs"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=tmerc +lat_0=0 +lon_0=23 +k=1 +x_0=500000 +y_0=0 +ellps=GRS80 +units=m +vunits=m +no_defs +type=crs">
	<Layer srs="+proj=tmerc +lat_0=0 +lon_0=23 +k=1 +x_0=500000 +y_0=0 +ellps=GRS80 +units=m +vunits=m +no_defs +type=crs">
	</Layer>
</Map>

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 11173, 'EPSG', 11173, '+proj=tmerc +lat_0=0 +lon_0=23 +k=1 +x_0=500000 +y_0=0 +ellps=GRS80 +units=m +vunits=m +no_defs +type=crs', 'COMPD_CS["ETRS89-FIN [EUREF-FIN] / GK23FIN + N2000 height",PROJCS["ETRS89-FIN [EUREF-FIN] / ETRS-GK23FIN",GEOGCS["ETRS89-FIN [EUREF-FIN]",DATUM["EUREF-FIN",SPHEROID["GRS 1980",6378137,298.257222101,AUTHORITY["EPSG","7019"]],AUTHORITY["EPSG","1391"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","10690"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",23],PARAMETER["scale_factor",1],PARAMETER["false_easting",500000],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","3130"]],VERT_CS["N2000 height",VERT_DATUM["N2000",2005,AUTHORITY["EPSG","1030"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Gravity-related height",UP],AUTHORITY["EPSG","3900"]],AUTHORITY["EPSG","11173"]]');