EPSG:9450

ETRS89-IRE [ETRF2000] + Belfast height

Attributes

Geodetic CRS: ETRS89-IRE [ETRF2000] + Belfast height

Data source: EPSG

Information source: Land and Property Services Northern Ireland.

Revision date: 2025-11-12

Scope: Spatial referencing.

Area of use: United Kingdom (UK) - Northern Ireland (Ulster) - onshore.

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SimpleMap

Center coordinates
-6.76 54.66

Projected bounds:
-8.18 53.96
-5.34 55.36

WGS84 bounds:
-8.18 53.96
-5.34 55.36

United Kingdom (UK) - Northern Ireland (Ulster) - onshore.
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Definition: OGC Well Known Text

COMPD_CS["ETRS89-IRE [ETRF2000] + Belfast height",
    GEOGCS["ETRS89-IRE [ETRF2000]",
        DATUM["ETRS89-IRE_ETRF2000",
            SPHEROID["GRS 1980",6378137,298.257222101,
                AUTHORITY["EPSG","7019"]],
            AUTHORITY["EPSG","6173"]],
        PRIMEM["Greenwich",0,
            AUTHORITY["EPSG","8901"]],
        UNIT["degree",0.0174532925199433,
            AUTHORITY["EPSG","9122"]],
        AUTHORITY["EPSG","4173"]],
    VERT_CS["Belfast height",
        VERT_DATUM["Belfast Lough",2005,
            AUTHORITY["EPSG","5131"]],
        UNIT["metre",1,
            AUTHORITY["EPSG","9001"]],
        AXIS["Gravity-related height",UP],
        AUTHORITY["EPSG","5732"]],
    AUTHORITY["EPSG","9450"]]

Definition: OGC Well Known Text 2 (2019)

COMPOUNDCRS["ETRS89-IRE [ETRF2000] + Belfast height",
    GEOGCRS["ETRS89-IRE [ETRF2000]",
        DATUM["ETRS89-IRE [ETRF2000]",
            ELLIPSOID["GRS 1980",6378137,298.257222101,
                LENGTHUNIT["metre",1]],
            ANCHOREPOCH[2009.756]],
        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]]],
    VERTCRS["Belfast height",
        VDATUM["Belfast Lough"],
        CS[vertical,1],
            AXIS["gravity-related height (H)",up,
                LENGTHUNIT["metre",1]]],
    USAGE[
        SCOPE["Spatial referencing."],
        AREA["United Kingdom (UK) - Northern Ireland (Ulster) - onshore."],
        BBOX[53.96,-8.18,55.36,-5.34]],
    ID["EPSG",9450]]

Definition: ESRI Well Known Text

GEOGCS["GCS_IRENET95",
    DATUM["D_IRENET95",
        SPHEROID["GRS_1980",6378137.0,298.257222101]],
    PRIMEM["Greenwich",0.0],
    UNIT["Degree",0.0174532925199433]],
VERTCS["Belfast",
    VDATUM["Belfast"],
    PARAMETER["Vertical_Shift",0.0],
    PARAMETER["Direction",1.0],
    UNIT["Meter",1.0]]

Definition: PROJ.4

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

Definition: JavaScript (Proj4js) 

proj4.defs("EPSG:9450","+proj=longlat +ellps=GRS80 +vunits=m +no_defs +type=crs");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "CompoundCRS",
    "name": "ETRS89-IRE [ETRF2000] + Belfast height",
    "components": [
        {
            "type": "GeographicCRS",
            "name": "ETRS89-IRE [ETRF2000]",
            "datum": {
                "type": "GeodeticReferenceFrame",
                "name": "ETRS89-IRE [ETRF2000]",
                "anchor_epoch": 2009.756,
                "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"
                    }
                ]
            }
        },
        {
            "type": "VerticalCRS",
            "name": "Belfast height",
            "datum": {
                "type": "VerticalReferenceFrame",
                "name": "Belfast Lough"
            },
            "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                    {
                        "name": "Gravity-related height",
                        "abbreviation": "H",
                        "direction": "up",
                        "unit": "metre"
                    }
                ]
            }
        }
    ],
    "scope": "Spatial referencing.",
    "area": "United Kingdom (UK) - Northern Ireland (Ulster) - onshore.",
    "bbox": {
        "south_latitude": 53.96,
        "west_longitude": -8.18,
        "north_latitude": 55.36,
        "east_longitude": -5.34
    },
    "id": {
        "authority": "EPSG",
        "code": 9450
    }
}

Definition: GeoServer

9450=COMPD_CS["ETRS89-IRE [ETRF2000] + Belfast height",GEOGCS["ETRS89-IRE [ETRF2000]",DATUM["ETRS89-IRE_ETRF2000",SPHEROID["GRS 1980",6378137,298.257222101,AUTHORITY["EPSG","7019"]],AUTHORITY["EPSG","6173"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4173"]],VERT_CS["Belfast height",VERT_DATUM["Belfast Lough",2005,AUTHORITY["EPSG","5131"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Gravity-related height",UP],AUTHORITY["EPSG","5732"]],AUTHORITY["EPSG","9450"]]

Definition: MapServer - MAPfile

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

Definition: Mapnik

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

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 9450, 'EPSG', 9450, '+proj=longlat +ellps=GRS80 +vunits=m +no_defs +type=crs', 'COMPD_CS["ETRS89-IRE [ETRF2000] + Belfast height",GEOGCS["ETRS89-IRE [ETRF2000]",DATUM["ETRS89-IRE_ETRF2000",SPHEROID["GRS 1980",6378137,298.257222101,AUTHORITY["EPSG","7019"]],AUTHORITY["EPSG","6173"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4173"]],VERT_CS["Belfast height",VERT_DATUM["Belfast Lough",2005,AUTHORITY["EPSG","5131"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Gravity-related height",UP],AUTHORITY["EPSG","5732"]],AUTHORITY["EPSG","9450"]]');