EPSG:4279 — OS(SN)80

Geographic 2D · Europe - British Isles - UK and Ireland onshore

Export Formats

OGC WKT

GEOGCS[
    "OS(SN)80",
    DATUM[
        "OS_SN_1980",
        SPHEROID["Airy 1830",6377563.396,299.3249646,AUTHORITY["EPSG","7001"]],
        AUTHORITY["EPSG","6279"]
    ],
    PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],
    UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],
    AUTHORITY["EPSG","4279"]
]

WKT2

GEOGCRS[
    "OS(SN)80",
    DATUM[
        "OS (SN) 1980",
        ELLIPSOID[
            "Airy 1830",
            6377563.396,
            299.3249646,
            LENGTHUNIT["metre",1,ID["EPSG",9001]],
            ID["EPSG",7001]
        ],
        ID["EPSG",6279]
    ],
    CS[ellipsoidal,2,ID["EPSG",6422]],
    AXIS["Geodetic latitude (Lat)",north],
    AXIS["Geodetic longitude (Lon)",east],
    ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],
    ID["EPSG",4279]
]

PROJ.4

+proj=longlat +ellps=airy +no_defs +type=crs

Proj4js

How to add a projection to Proj4js? →

proj4.defs("EPSG:4279", "+proj=longlat +ellps=airy +no_defs +type=crs");

JSON

{
  "type": "CoordinateReferenceSystem",
  "code": 4279,
  "name": "OS(SN)80",
  "kind": "geographic 2D",
  "area": "Europe - British Isles - UK and Ireland onshore",
  "unit": "degree (supplier to define representation)",
  "bbox": [
    49.81,
    -10.56,
    60.9,
    1.84
  ],
  "proj4": "+proj=longlat +ellps=airy +no_defs +type=crs"
}

PostGIS

How to add a projection to PostGIS? →

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (4279, 'EPSG', 4279, '+proj=longlat +ellps=airy +no_defs +type=crs', 'GEOGCS["OS(SN)80",DATUM["OS_SN_1980",SPHEROID["Airy 1830",6377563.396,299.3249646,AUTHORITY["EPSG","7001"]],AUTHORITY["EPSG","6279"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4279"]]');

MapServer

How to add a projection to MapServer? →

PROJECTION
  "+proj=longlat"
  "+ellps=airy"
  "+no_defs"
  "+type=crs"
END

GeoServer

How to add a projection to GeoServer? →

4279=GEOGCS["OS(SN)80",DATUM["OS_SN_1980",SPHEROID["Airy 1830",6377563.396,299.3249646,AUTHORITY["EPSG","7001"]],AUTHORITY["EPSG","6279"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4279"]]

Frequently Asked Questions

How do I add EPSG:4279 to GeoServer?

Add the following definition to your GeoServer configuration:

4279=GEOGCS["OS(SN)80",DATUM["OS_SN_1980",SPHEROID["Airy 1830",6377563.396,299.3249646,AUTHORITY["EPSG","7001"]],AUTHORITY["EPSG","6279"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4279"]]

Read the full GeoServer guide →

How do I add EPSG:4279 to PostGIS?

Add the following definition to your PostGIS configuration:

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (4279, 'EPSG', 4279, '+proj=longlat +ellps=airy +no_defs +type=crs', 'GEOGCS["OS(SN)80",DATUM["OS_SN_1980",SPHEROID["Airy 1830",6377563.396,299.3249646,AUTHORITY["EPSG","7001"]],AUTHORITY["EPSG","6279"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4279"]]');

Read the full PostGIS guide →

How do I add EPSG:4279 to MapServer?

Add the following definition to your MapServer configuration:

PROJECTION
  "+proj=longlat"
  "+ellps=airy"
  "+no_defs"
  "+type=crs"
END

Read the full MapServer guide →

How do I use EPSG:4279 with Proj4js?

Add the following definition to your Proj4js configuration:

proj4.defs("EPSG:4279", "+proj=longlat +ellps=airy +no_defs +type=crs");

Read the full Proj4js guide →