Coordinate Reference Systems
The DNF register of Coordinate Reference Systems is intended to give an overview of all the common spatial reference systems in use in the UK. The defining parameters for each will be published.
| CRS Code | |
|---|---|
| OSGB 1936 | View parameters |
| ETRS89 | View parameters |
| TM75 | View parameters |
| OSNI 1952 | View parameters |
| IRENET 95 | View parameters |
| WGS84 | View parameters |
British National Grid (OSGB 1936)
| CS_NAME | OSGB 1936 / British National Grid |
|---|---|
| SRID | 27700 |
| AUTH_NAME | Ordnance Survey |
| Coordinate System Type | Projected |
| Datum | OSGB 1936 (EPSG ID 6277) |
| Spheroid | Airy 1830 (EPSG ID 7001) |
| Semi-Major Axis | 6377563.396 |
| Semi-Minor Axis | 299.324964600 |
| Prime Meridian | Greenwich |
| PM Units | Decimal Degree, 0.01745329251994328 |
| Projection | British National Grid (EPSG OP 19916) |
| Latitude of Origin | 49 |
| Central Meridian | -2 |
| Scale Factor | 0.9996012717 |
| False Easting | 400000 |
| False Northing | -100000 |
| E/N Units | Meter, 1 |
| Geocentric X Translation | 446.44800 |
| Geocentric Y Translation | -125.15700 |
| Geocentric Z Translation | 542.06000 |
| Rotation X-Axis | 0.15020 |
| Rotation Y-Axis | 0.24700 |
| Rotation Z-Axis | 0.84210 |
| Correction of Scale | 0.9999795106 |
European Terrestrial Reference System 1989 (ETRS89)
| CS_NAME | ETRS89 |
|---|---|
| SRID | 4258 |
| AUTH_NAME | EPSG. See 3D CRS for original information source. |
| Coordinate System Type | Geographic |
| Datum | European Terrestrial Reference System 1989 (EPSG ID 6258) |
| Spheroid | GRS 1980 (EPSG ID 7019) |
| Semi-Major Axis | 6378137.000 |
| Semi-Minor Axis | 298.257222101 |
| Prime Meridian | Greenwich |
| PM Units | Decimal Degree, 0.01745329251994328 |
Irish Grid (TM75)
| CS_NAME | TM75 / Irish Grid |
|---|---|
| SRID | 29903 |
| AUTH_NAME | Ordnance Survey of Ireland |
| Coordinate System Type | Projected |
| Datum | Geodetic Datum of 1965 (EPSG ID 6300) |
| Spheroid | Airy Modified 1849 (EPSG ID 7002) |
| Semi-Major Axis | 6377340.189 |
| Semi-Minor Axis | 299.324964600 |
| Prime Meridian | Greenwich |
| PM Units | Decimal Degree, 0.01745329251994328 |
| Projection | Irish Grid (EPSG OP 19972) |
| Latitude of Origin | 53.5 |
| Central Meridian | -8 |
| Scale Factor | 1.0000350000 |
| False Easting | 200000 |
| False Northing | 250000 |
| E/N Units | Meter, 1 |
| Geocentric X Translation | 482.50000 |
| Geocentric Y Translation | -130.60000 |
| Geocentric Z Translation | 564.60000 |
| Rotation X-Axis | -1.04200 |
| Rotation Y-Axis | -0.21400 |
| Rotation Z-Axis | -0.63100 |
| Correction of Scale | 0.99999185 |
Irish National Grid (OSNI 1952)
| CS_NAME | OSNI 1952 / Irish National Grid |
|---|---|
| SRID | 29901 |
| AUTH_NAME | Ordnance Survey of Northern Ireland. |
| Coordinate System Type | Projected |
| Datum | OSNI 1952 (EPSG ID 6188) |
| Spheroid | Airy 1830 (EPSG ID 7001) |
| Semi-Major Axis | 6377563.396 |
| Semi-Minor Axis | 299.324964600 |
| Prime Meridian | Greenwich |
| PM Units | Decimal Degree, 0.01745329251994328 |
| Projection | Irish National Grid (EPSG OP 19973) |
| Latitude of Origin | 53.5 |
| Central Meridian | -8 |
| Scale Factor | 1.0000000000 |
| False Easting | 200000 |
| False Northing | 250000 |
| E/N Units | Meter, 1 |
| Geocentric X Translation | 482.50000 |
| Geocentric Y Translation | -130.60000 |
| Geocentric Z Translation | 564.60000 |
| Rotation X-Axis | -1.04200 |
| Rotation Y-Axis | -0.21400 |
| Rotation Z-Axis | -0.63100 |
| Correction of Scale | 0.99999185 |
Irish Transverse Mercator (IRENET 95)
| CS_NAME | IRENET95 / Irish Transverse Mercator |
|---|---|
| SRID | 2157 |
| AUTH_NAME | Ordnance Survey of Ireland |
| Coordinate System Type | Projected |
| Datum | IRENET95 (EPSG ID 6173) |
| Spheroid | GRS 1980 (EPSG ID 7019) |
| Semi-Major Axis | 6378137.000 |
| Semi-Minor Axis | 298.257222101 |
| Prime Meridian | Greenwich |
| PM Units | Decimal Degree, 0.01745329251994328 |
| Projection | Irish Transverse Mercator (EPSG OP 19962) |
| Latitude of Origin | 53.5 |
| Central Meridian | -8 |
| Scale Factor | 0.9998200000 |
| False Easting | 600000 |
| False Northing | 750000 |
| E/N Units | Meter, 1 |
| Geocentric X Translation | |
| Geocentric Y Translation | |
| Geocentric Z Translation | |
| Rotation X-Axis | |
| Rotation Y-Axis | |
| Rotation Z-Axis | |
| Correction of Scale |
World Geodetic System 1984 (WGS84)
| CS_NAME | WGS 84 |
|---|---|
| SRID | 4326 |
| AUTH_NAME | EPSG. See 3D CRS for original information source. |
| Coordinate System Type | Geographic |
| Datum | World Geodetic System 1984 (EPSG ID 6326) |
| Spheroid | WGS 84 (EPSG ID 7030) |
| Semi-Major Axis | 6378137.000 |
| Semi-Minor Axis | 298.257223563 |
| Prime Meridian | Greenwich |
| PM Units | Decimal Degree, 0.01745329251994328 |
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