EPSG:2157 IRENET95 / Irish Transverse Mercator
Projected system (Transverse Mercator) in use: Europe - Ireland (Republic and Ulster) - onshore. The full definition below, and conversion in one click.
| Code | EPSG:2157 |
|---|---|
| Name | IRENET95 / Irish Transverse Mercator |
| Type | Projected system — Transverse Mercator |
| Area of use |
Europe - Ireland (Republic and Ulster) - onshore Ireland - onshore. United Kingdom (UK) - Northern Ireland (Ulster) - onshore. |
| Bounds | W -10,56° · S 51,39° · E -5,34° · N 55,43° |
| Countries | Ireland, United Kingdom |
| Datum | IRENET95 |
| Ellipsoid | GRS 1980 a = 6378137 m · 1/f = 298.257222101 |
| Base geographic system | EPSG:4173 — IRENET95 |
| Unit | metre (E east, N north) |
| Transformation to WGS 84 | IRENET95 to WGS 84 (1) (EPSG:1678) — accuracy 1 m |
| Scope | Engineering survey, topographic mapping. |
Projection parameters
| Parameter | Value | Unit |
|---|---|---|
| Latitude of natural origin | 53.5 | degree |
| Longitude of natural origin | -8 | degree |
| Scale factor at natural origin | 0.99982 | unity |
| False easting | 600000 | metre |
| False northing | 750000 | metre |
proj4 definition
+proj=tmerc +lat_0=53.5 +lon_0=-8 +k=0.99982 +x_0=600000 +y_0=750000 +ellps=GRS80 +units=m +towgs84=0,0,0 +no_defsPaste it into QGIS, proj4js, PostGIS (spatial_ref_sys) or GDAL. +towgs84 carries the EPSG transformation to WGS 84; the official code stays EPSG:2157.
WKT (ESRI format, the .prj content)
PROJCS["IRENET95_Irish_Transverse_Mercator",GEOGCS["GCS_IRENET95",DATUM["D_IRENET95",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",600000.0],PARAMETER["False_Northing",750000.0],PARAMETER["Central_Meridian",-8.0],PARAMETER["Scale_Factor",0.99982],PARAMETER["Latitude_Of_Origin",53.5],UNIT["Meter",1.0]]Other systems — Ireland
Source: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.