EPSG:4277

OSGB36

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Available transformations
to EPSG:4326
EPSG:4326 - WGS 84

Selected transformation

Method: NTv2

Grid Files: OSTN15_NTv2_OSGBtoETRS.gsb

Remarks: Parameter values taken from OSGB36 to ETRS89 (2) (tfm code 7709) assuming that ETRS89 is coincident with WGS 84 within the accuracy of the tfm. Replaces OSGB36 to WGS 84 (7) (tfm code 5339).

Information source: EPSG

Revision date: 2021-08-19

Attributes

Unit: degree (supplier to define representation)

Geodetic CRS: OSGB36

Datum: Ordnance Survey of Great Britain 1936

Ellipsoid: Airy 1830

Prime meridian: Greenwich

Data source: EPSG

Information source: Ordnance Survey of Great Britain.

Revision date: 2021-03-18

Scope: Geodesy.

Area of use: 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.

Coordinate system: Ellipsoidal 2D CS. Axes: latitude, longitude. Orientations: north, east. UoM: degree

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Center coordinates
-3.5 55.38

WGS84 bounds:
-9.01 49.75
2.01 61.01

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.
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Definition: OGC Well Known Text

GEOGCS["OSGB36",
    DATUM["Ordnance_Survey_of_Great_Britain_1936",
        SPHEROID["Airy 1830",6377563.396,299.3249646],
        EXTENSION["PROJ4_GRIDS","OSTN15_NTv2_OSGBtoETRS.gsb"]],
    PRIMEM["Greenwich",0,
        AUTHORITY["EPSG","8901"]],
    UNIT["degree",0.0174532925199433,
        AUTHORITY["EPSG","9122"]],
    AUTHORITY["EPSG","4277"]]

Definition: OGC Well Known Text 2 (2019)

GEOGCRS["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]],
    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]],
    USAGE[
        SCOPE["Geodesy."],
        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",4277]]

Definition: ESRI Well Known Text

GEOGCS["GCS_OSGB_1936",
    DATUM["D_OSGB_1936",
        SPHEROID["Airy_1830",6377563.396,299.3249646],
        EXTENSION["PROJ4_GRIDS","OSTN15_NTv2_OSGBtoETRS.gsb"]],
    PRIMEM["Greenwich",0.0],
    UNIT["Degree",0.0174532925199433]]

Definition: PROJ.4

+proj=longlat +ellps=airy +nadgrids=OSTN15_NTv2_OSGBtoETRS.gsb +no_defs +type=crs

Definition: JavaScript (Proj4js) 

proj4.defs("EPSG:4277","+proj=longlat +ellps=airy +nadgrids=OSTN15_NTv2_OSGBtoETRS.gsb +no_defs +type=crs");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "GeographicCRS",
    "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"
            }
        ]
    },
    "scope": "Geodesy.",
    "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": 4277
    }
}

Definition: GeoServer

4277=GEOGCS["OSGB36",DATUM["Ordnance_Survey_of_Great_Britain_1936",SPHEROID["Airy 1830",6377563.396,299.3249646],EXTENSION["PROJ4_GRIDS","OSTN15_NTv2_OSGBtoETRS.gsb"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4277"]]

Definition: MapServer - MAPfile

PROJECTION
	"proj=longlat"
	"ellps=airy"
	"nadgrids=OSTN15_NTv2_OSGBtoETRS.gsb"
	"no_defs"
	"type=crs"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=longlat +ellps=airy +nadgrids=OSTN15_NTv2_OSGBtoETRS.gsb +no_defs +type=crs">
	<Layer srs="+proj=longlat +ellps=airy +nadgrids=OSTN15_NTv2_OSGBtoETRS.gsb +no_defs +type=crs">
	</Layer>
</Map>

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 4277, 'EPSG', 4277, '+proj=longlat +ellps=airy +nadgrids=OSTN15_NTv2_OSGBtoETRS.gsb +no_defs +type=crs', 'GEOGCS["OSGB36",DATUM["Ordnance_Survey_of_Great_Britain_1936",SPHEROID["Airy 1830",6377563.396,299.3249646],EXTENSION["PROJ4_GRIDS","OSTN15_NTv2_OSGBtoETRS.gsb"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4277"]]');