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Geodetic CRS: OSGB36 / British National Grid + BI height
Data source: EPSG
Information source: Ordnance Survey of Great Britain.
Revision date: 2022-01-24
Scope: Spatial referencing.
Remarks: BI height is based on an ensemble including ODN, ODN (Offshore) and island vertical datums.
&stroke=red&width=2&path=49.75,-9.01|61.01,-9.01|61.01,2.01|49.75,2.01|49.75,-9.01)
Center coordinates
305055.15 610582.2
Projected bounds:
-104728.76 -16703.89
688806.01 1256616.32
WGS84 bounds:
-9.01 49.75
2.01 61.01
Definition: OGC Well Known Text
COMPD_CS["OSGB36 / British National Grid + BI height", PROJCS["OSGB36 / British National Grid", GEOGCS["OSGB36", DATUM["Ordnance_Survey_of_Great_Britain_1936", SPHEROID["Airy 1830",6377563.396,299.3249646, AUTHORITY["EPSG","7001"]], AUTHORITY["EPSG","6277"]], PRIMEM["Greenwich",0, AUTHORITY["EPSG","8901"]], UNIT["degree",0.0174532925199433, AUTHORITY["EPSG","9122"]], AUTHORITY["EPSG","4277"]], PROJECTION["Transverse_Mercator"], PARAMETER["latitude_of_origin",49], PARAMETER["central_meridian",-2], PARAMETER["scale_factor",0.9996012717], PARAMETER["false_easting",400000], PARAMETER["false_northing",-100000], UNIT["metre",1, AUTHORITY["EPSG","9001"]], AXIS["Easting",EAST], AXIS["Northing",NORTH], AUTHORITY["EPSG","27700"]], VERT_CS["BI height", VERT_DATUM["British Isles height ensemble",2005, AUTHORITY["EPSG","1288"]], UNIT["metre",1, AUTHORITY["EPSG","9001"]], AXIS["Gravity-related height",UP], AUTHORITY["EPSG","9451"]], AUTHORITY["EPSG","9920"]]
Definition: OGC Well Known Text 2 (2019)
COMPOUNDCRS["OSGB36 / British National Grid + BI height", PROJCRS["OSGB36 / British National Grid", BASEGEOGCRS["OSGB36", DATUM["Ordnance Survey of Great Britain 1936", ELLIPSOID["Airy 1830",6377563.396,299.3249646, LENGTHUNIT["metre",1]]], PRIMEM["Greenwich",0, ANGLEUNIT["degree",0.0174532925199433]], ID["EPSG",4277]], CONVERSION["British National Grid", METHOD["Transverse Mercator", ID["EPSG",9807]], PARAMETER["Latitude of natural origin",49, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8801]], PARAMETER["Longitude of natural origin",-2, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8802]], PARAMETER["Scale factor at natural origin",0.9996012717, SCALEUNIT["unity",1], ID["EPSG",8805]], PARAMETER["False easting",400000, LENGTHUNIT["metre",1], ID["EPSG",8806]], PARAMETER["False northing",-100000, LENGTHUNIT["metre",1], ID["EPSG",8807]]], CS[Cartesian,2], AXIS["(E)",east, ORDER[1], LENGTHUNIT["metre",1]], AXIS["(N)",north, ORDER[2], LENGTHUNIT["metre",1]]], VERTCRS["BI height", ENSEMBLE["British Isles height ensemble", MEMBER["Malin Head"], MEMBER["Belfast Lough"], MEMBER["Ordnance Datum Newlyn"], MEMBER["Ordnance Datum Newlyn (Offshore)"], MEMBER["Ordnance Datum Newlyn (Orkney Isles)"], MEMBER["Lerwick"], MEMBER["Stornoway"], MEMBER["Douglas"], MEMBER["St. Marys"], ENSEMBLEACCURACY[0.4]], CS[vertical,1], AXIS["gravity-related height (H)",up, LENGTHUNIT["metre",1]]], USAGE[ SCOPE["Spatial referencing."], AREA["United Kingdom (UK) - offshore to boundary of UKCS within 49°45'N to 61°N and 9°W to 2°E; onshore Great Britain (England, Wales and Scotland). Isle of Man onshore."], BBOX[49.75,-9.01,61.01,2.01]], ID["EPSG",9920]]
Definition: ESRI Well Known Text
PROJCS["British_National_Grid", GEOGCS["GCS_OSGB_1936", DATUM["D_OSGB_1936", SPHEROID["Airy_1830",6377563.396,299.3249646]], PRIMEM["Greenwich",0.0], UNIT["Degree",0.0174532925199433]], PROJECTION["Transverse_Mercator"], PARAMETER["False_Easting",400000.0], PARAMETER["False_Northing",-100000.0], PARAMETER["Central_Meridian",-2.0], PARAMETER["Scale_Factor",0.9996012717], PARAMETER["Latitude_Of_Origin",49.0], UNIT["Meter",1.0]], VERTCS["BI_height", VDATUM["British_Isles_height_ensemble"], PARAMETER["Vertical_Shift",0.0], PARAMETER["Direction",1.0], UNIT["Meter",1.0]]
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "CompoundCRS", "name": "OSGB36 / British National Grid + BI height", "components": [ { "type": "ProjectedCRS", "name": "OSGB36 / British National Grid", "base_crs": { "name": "OSGB36", "datum": { "type": "GeodeticReferenceFrame", "name": "Ordnance Survey of Great Britain 1936", "ellipsoid": { "name": "Airy 1830", "semi_major_axis": 6377563.396, "inverse_flattening": 299.3249646 } }, "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": 4277 } }, "conversion": { "name": "British National Grid", "method": { "name": "Transverse Mercator", "id": { "authority": "EPSG", "code": 9807 } }, "parameters": [ { "name": "Latitude of natural origin", "value": 49, "unit": "degree", "id": { "authority": "EPSG", "code": 8801 } }, { "name": "Longitude of natural origin", "value": -2, "unit": "degree", "id": { "authority": "EPSG", "code": 8802 } }, { "name": "Scale factor at natural origin", "value": 0.9996012717, "unit": "unity", "id": { "authority": "EPSG", "code": 8805 } }, { "name": "False easting", "value": 400000, "unit": "metre", "id": { "authority": "EPSG", "code": 8806 } }, { "name": "False northing", "value": -100000, "unit": "metre", "id": { "authority": "EPSG", "code": 8807 } } ] }, "coordinate_system": { "subtype": "Cartesian", "axis": [ { "name": "Easting", "abbreviation": "E", "direction": "east", "unit": "metre" }, { "name": "Northing", "abbreviation": "N", "direction": "north", "unit": "metre" } ] } }, { "type": "VerticalCRS", "name": "BI height", "datum_ensemble": { "name": "British Isles height ensemble", "members": [ { "name": "Malin Head", "id": { "authority": "EPSG", "code": 5130 } }, { "name": "Belfast Lough", "id": { "authority": "EPSG", "code": 5131 } }, { "name": "Ordnance Datum Newlyn", "id": { "authority": "EPSG", "code": 5101 } }, { "name": "Ordnance Datum Newlyn (Offshore)", "id": { "authority": "EPSG", "code": 1164 } }, { "name": "Ordnance Datum Newlyn (Orkney Isles)", "id": { "authority": "EPSG", "code": 5138 } }, { "name": "Lerwick", "id": { "authority": "EPSG", "code": 5140 } }, { "name": "Stornoway", "id": { "authority": "EPSG", "code": 5144 } }, { "name": "Douglas", "id": { "authority": "EPSG", "code": 5148 } }, { "name": "St. Marys", "id": { "authority": "EPSG", "code": 5147 } } ], "accuracy": "0.4", "id": { "authority": "EPSG", "code": 1288 } }, "coordinate_system": { "subtype": "vertical", "axis": [ { "name": "Gravity-related height", "abbreviation": "H", "direction": "up", "unit": "metre" } ] } } ], "scope": "Spatial referencing.", "area": "United Kingdom (UK) - offshore to boundary of UKCS within 49°45'N to 61°N and 9°W to 2°E; onshore Great Britain (England, Wales and Scotland). Isle of Man onshore.", "bbox": { "south_latitude": 49.75, "west_longitude": -9.01, "north_latitude": 61.01, "east_longitude": 2.01 }, "id": { "authority": "EPSG", "code": 9920 } }
Definition: GeoServer
9920=COMPD_CS["OSGB36 / British National Grid + BI height",PROJCS["OSGB36 / British National Grid",GEOGCS["OSGB36",DATUM["Ordnance_Survey_of_Great_Britain_1936",SPHEROID["Airy 1830",6377563.396,299.3249646,AUTHORITY["EPSG","7001"]],AUTHORITY["EPSG","6277"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4277"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",49],PARAMETER["central_meridian",-2],PARAMETER["scale_factor",0.9996012717],PARAMETER["false_easting",400000],PARAMETER["false_northing",-100000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","27700"]],VERT_CS["BI height",VERT_DATUM["British Isles height ensemble",2005,AUTHORITY["EPSG","1288"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Gravity-related height",UP],AUTHORITY["EPSG","9451"]],AUTHORITY["EPSG","9920"]]
Definition: Mapnik
<?xml version="1.0" encoding="utf-8"?> <Map srs="+proj=tmerc +lat_0=49 +lon_0=-2 +k=0.9996012717 +x_0=400000 +y_0=-100000 +ellps=airy +units=m +vunits=m +no_defs +type=crs"> <Layer srs="+proj=tmerc +lat_0=49 +lon_0=-2 +k=0.9996012717 +x_0=400000 +y_0=-100000 +ellps=airy +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 ( 9920, 'EPSG', 9920, '+proj=tmerc +lat_0=49 +lon_0=-2 +k=0.9996012717 +x_0=400000 +y_0=-100000 +ellps=airy +units=m +vunits=m +no_defs +type=crs', 'COMPD_CS["OSGB36 / British National Grid + BI height",PROJCS["OSGB36 / British National Grid",GEOGCS["OSGB36",DATUM["Ordnance_Survey_of_Great_Britain_1936",SPHEROID["Airy 1830",6377563.396,299.3249646,AUTHORITY["EPSG","7001"]],AUTHORITY["EPSG","6277"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4277"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",49],PARAMETER["central_meridian",-2],PARAMETER["scale_factor",0.9996012717],PARAMETER["false_easting",400000],PARAMETER["false_northing",-100000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","27700"]],VERT_CS["BI height",VERT_DATUM["British Isles height ensemble",2005,AUTHORITY["EPSG","1288"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Gravity-related height",UP],AUTHORITY["EPSG","9451"]],AUTHORITY["EPSG","9920"]]');
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