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Geodetic CRS: ETRS89-GBR [OSNet v2009]
Datum: OSNet v2009
Ellipsoid: GRS 1980
Prime meridian: Greenwich
Data source: EPSG
Information source: Ordnance Survey of Great Britain, http://www.gps.gov.uk
Revision date: 2025-10-17
Scope: Derivation of gravity-related heights from GNSS observations.
Remarks: OSGM15 supersedes OSGM02 geoid model. Replaces ETRS89 to Stornaway height (1) (tfm code 10033). For reversible alternative to this transformation see ETRS89-GBR [OSNet v2009] to ETRS89-GBR [OSNet v2009] + Stornoway height (2) (code 9584).
Method: Geographic3D to GravityRelatedHeight (OSGM-GB)
Area of use: United Kingdom (UK) - Great Britain - Scotland - Outer Hebrides onshore.
Description: (0,)
Definition: OGC Well Known Text 2 (2019)
COORDINATEOPERATION["ETRS89-GBR [OSNet v2009] to Stornoway height (2)", VERSION["OS-UK Heb 2015"], SOURCECRS[ GEOGCRS["ETRS89-GBR [OSNet v2009]", DATUM["OSNet v2009", ELLIPSOID["GRS 1980",6378137,298.257222101, LENGTHUNIT["metre",1]], ANCHOREPOCH[2009.756]], PRIMEM["Greenwich",0, ANGLEUNIT["degree",0.0174532925199433]], CS[ellipsoidal,3], AXIS["geodetic latitude (Lat)",north, ORDER[1], ANGLEUNIT["degree",0.0174532925199433]], AXIS["geodetic longitude (Lon)",east, ORDER[2], ANGLEUNIT["degree",0.0174532925199433]], AXIS["ellipsoidal height (h)",up, ORDER[3], LENGTHUNIT["metre",1]], ID["EPSG",11008]]], TARGETCRS[ VERTCRS["Stornoway height", VDATUM["Stornoway"], CS[vertical,1], AXIS["gravity-related height (H)",up, LENGTHUNIT["metre",1]], ID["EPSG",5746]]], METHOD["Geographic3D to GravityRelatedHeight (OSGM-GB)", ID["EPSG",9663]], PARAMETERFILE["Geoid (height correction) model file","OSTN15_OSGM15_GB.txt"], OPERATIONACCURACY[0.011], USAGE[ SCOPE["Derivation of gravity-related heights from GNSS observations."], AREA["United Kingdom (UK) - Great Britain - Scotland - Outer Hebrides onshore."], BBOX[56.76,-7.72,58.54,-6.1]], ID["EPSG",7715], REMARK["OSGM15 supersedes OSGM02 geoid model. Replaces ETRS89 to Stornaway height (1) (tfm code 10033). For reversible alternative to this transformation see ETRS89-GBR [OSNet v2009] to ETRS89-GBR [OSNet v2009] + Stornoway height (2) (code 9584)."]]
Definition: JavaScript (Proj4js)
proj4.defs("EPSG:7715","+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +inv +proj=vgridshift +grids=uk_os_OSGM15_GB.tif +multiplier=1 +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1");
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "Transformation", "name": "ETRS89-GBR [OSNet v2009] to Stornoway height (2)", "source_crs": { "type": "GeographicCRS", "name": "ETRS89-GBR [OSNet v2009]", "datum": { "type": "GeodeticReferenceFrame", "name": "OSNet v2009", "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" }, { "name": "Ellipsoidal height", "abbreviation": "h", "direction": "up", "unit": "metre" } ] }, "id": { "authority": "EPSG", "code": 11008 }, "remarks": "Second national realization of ETRS89 in Great Britain. Replaces ETRS89-GBR [OSNet v2001] from 2016." }, "target_crs": { "type": "VerticalCRS", "name": "Stornoway height", "datum": { "type": "VerticalReferenceFrame", "name": "Stornoway" }, "coordinate_system": { "subtype": "vertical", "axis": [ { "name": "Gravity-related height", "abbreviation": "H", "direction": "up", "unit": "metre" } ] }, "id": { "authority": "EPSG", "code": 5746 } }, "method": { "name": "Geographic3D to GravityRelatedHeight (OSGM-GB)", "id": { "authority": "EPSG", "code": 9663 } }, "parameters": [ { "name": "Geoid (height correction) model file", "value": "OSTN15_OSGM15_GB.txt", "id": { "authority": "EPSG", "code": 8666 } } ], "accuracy": "0.011", "scope": "Derivation of gravity-related heights from GNSS observations.", "area": "United Kingdom (UK) - Great Britain - Scotland - Outer Hebrides onshore.", "bbox": { "south_latitude": 56.76, "west_longitude": -7.72, "north_latitude": 58.54, "east_longitude": -6.1 }, "id": { "authority": "EPSG", "code": 7715 }, "remarks": "OSGM15 supersedes OSGM02 geoid model. Replaces ETRS89 to Stornaway height (1) (tfm code 10033). For reversible alternative to this transformation see ETRS89-GBR [OSNet v2009] to ETRS89-GBR [OSNet v2009] + Stornoway height (2) (code 9584)." }
Definition: MapServer - MAPfile
PROJECTION "proj=pipeline" "step" "proj=axisswap" "order=2,1" "step" "proj=unitconvert" "xy_in=deg" "xy_out=rad" "step" "inv" "proj=vgridshift" "grids=uk_os_OSGM15_GB.tif" "multiplier=1" "step" "proj=unitconvert" "xy_in=rad" "xy_out=deg" "step" "proj=axisswap" "order=2,1" END
Definition: Mapnik
<?xml version="1.0" encoding="utf-8"?> <Map srs="+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +inv +proj=vgridshift +grids=uk_os_OSGM15_GB.tif +multiplier=1 +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1"> <Layer srs="+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +inv +proj=vgridshift +grids=uk_os_OSGM15_GB.tif +multiplier=1 +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1"> </Layer> </Map>
Definition: SQL (PostGIS)
INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 7715, 'EPSG', 7715, '+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +inv +proj=vgridshift +grids=uk_os_OSGM15_GB.tif +multiplier=1 +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1', 'None');
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