EPSG:CODE

EPSG:4278 — OSGB70

Geographic 2D · UK - Great Britain onshore and nearshore; Isle of Man

Export Formats

OGC WKT
GEOGCS[
    "OSGB70",
    DATUM[
        "OSGB_1970_SN",
        SPHEROID["Airy 1830",6377563.396,299.3249646,AUTHORITY["EPSG","7001"]],
        AUTHORITY["EPSG","6278"]
    ],
    PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],
    UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],
    AUTHORITY["EPSG","4278"]
]

Frequently Asked Questions

How do I add EPSG:4278 to GeoServer?

Add the following definition to your GeoServer configuration: 

4278=GEOGCS["OSGB70",DATUM["OSGB_1970_SN",SPHEROID["Airy 1830",6377563.396,299.3249646,AUTHORITY["EPSG","7001"]],AUTHORITY["EPSG","6278"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4278"]]
Read the full GeoServer guide →

How do I add EPSG:4278 to PostGIS?

Add the following definition to your PostGIS configuration: 

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (4278, 'EPSG', 4278, '+proj=longlat +ellps=airy +no_defs +type=crs', 'GEOGCS["OSGB70",DATUM["OSGB_1970_SN",SPHEROID["Airy 1830",6377563.396,299.3249646,AUTHORITY["EPSG","7001"]],AUTHORITY["EPSG","6278"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4278"]]');
Read the full PostGIS guide →

How do I add EPSG:4278 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:4278 with Proj4js?

Add the following definition to your Proj4js configuration: 

proj4.defs("EPSG:4278", "+proj=longlat +ellps=airy +no_defs +type=crs");
Read the full Proj4js guide →