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.
| ETRS89 | View Parameters |
| WGS 84 | View Parameters |
| OSGB 1936 / British National Grid | View Parameters |
| OSNI 1952 / Irish National Grid | View Parameters |
| IRENET95 / Irish Transverse Mercator | View Parameters |
| TM75 / Irish Grid | View Parameters |
| 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 |
| 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 |
| 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 | 0.15000 |
| Rotation Y-Axis | 0.24700 |
| Rotation Z-Axis | 0.84200 |
| Correction of Scale | 1.000020489 |
| 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 |
| 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 |
| 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 |