Description of CRS - IE_IRELAND65 / IRELAND75_IRISHGRID| Attribute | Entry |
|---|
| Country | Ireland |
| Country identifier | IE |
| CRS identifier | IE_IRELAND65 / IRELAND75_IRISHGRID |
| CRS alias |
|
| CRS valid area | Ireland / Northern Ireland |
| CRS scope | |
| CRS remarks | Ireland and Northern Ireland share a common reference system |
| Datum identifier | IRELAND65 |
| Datum alias |
|
| Datum type | geodetic |
| Datum anchor point |
|
| Datum realization epoch | |
| Datum valid area | Ireland / Northern Ireland |
| Datum scope |
|
| Datum remarks |
|
| Prime meridian identifier | Greenwich |
| Prime meridian greenwich longitude | 0° |
| Prime meridian remarks | |
| Ellipsoid identifier | Airy Modified |
| Ellipsoid alias | |
| Ellipsoid semi major axis | 6 377 340.189 m |
| Ellipsoid shape | true |
| Ellipsoid inverse flattening | 299.32496460 |
| Ellipsoid remarks | |
| Coordinate system identifier | IRELAND75_IRISHGRID |
| Coordinate system type | projected |
| Coordinate system dimension | 2 |
| Coordinate system remarks | |
| Coordinate system axis name | northing |
| Coordinate system axis direction | North |
| Coordinate system axis unit identifier | metre |
| Coordinate system axis name | easting |
| Coordinate system axis direction | East |
| Coordinate system axis unit identifier | metre |
| Operation identifier | IRELAND75_IRISHGRID |
| Operation valid area | Ireland / Northern Ireland |
| Operation scope | |
| Operation method name | Transverse Mercator Projection |
| Operation method name alias | Gauß Krüger Projection |
| Operation method formula | Transverse Mercator Mapping Equations, in: The Irish Grid,
Ordnance Survey Ireland, 1996 |
| Operation method parameters number | 5 |
| Operation method remarks |
|
| Operation parameter name | latitude of origin |
| Operation parameter value | 53°30' N |
| Operation parameter remarks | |
| Operation parameter name | longitude of origin |
| Operation parameter value | 8°00' W |
| Operation parameter remarks | |
| Operation parameter name | false northing |
| Operation parameter value | 250 000 m |
| Operation parameter remarks | |
| Operation parameter name | false easting |
| Operation parameter value | 200 000 m |
| Operation parameter remarks | |
| Operation parameter name | scale factor at central meridian |
| Operation parameter value | 1.000035 |
| Operation parameter remarks | |