metre
Spatial referencing.
None
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.
Data Source: EPSG v11.022 2024-11-05
Datum: Ordnance Survey of Great Britain 1936
Coordinate System: Undefined
Projection: Undefined
Geodetic CRS: Undefined
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]]
{
"$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
}
}
{'crs_wkt': '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]]',
'false_easting': 400000.0,
'false_northing': -100000.0,
'geographic_crs_name': 'OSGB36',
'grid_mapping_name': 'transverse_mercator',
'horizontal_datum_name': 'Ordnance Survey of Great Britain 1936',
'inverse_flattening': 299.3249646,
'latitude_of_projection_origin': 49.0,
'longitude_of_central_meridian': -2.0,
'longitude_of_prime_meridian': 0.0,
'prime_meridian_name': 'Greenwich',
'projected_crs_name': 'OSGB36 / British National Grid',
'reference_ellipsoid_name': 'Airy 1830',
'scale_factor_at_central_meridian': 0.9996012717,
'semi_major_axis': 6377563.396,
'semi_minor_axis': 6356256.909237285}