EPSG:2137 Accra / TM 1 NW
Projected system (Transverse Mercator) in use: Ghana - offshore. The full definition below, and conversion in one click.
| Code | EPSG:2137 |
|---|---|
| Name | Accra / TM 1 NW |
| Type | Projected system — Transverse Mercator |
| Area of use | Ghana - offshore |
| Bounds | W -3,79° · S 1,40° · E 2,10° · N 6,06° |
| Countries | Ghana |
| Datum | Accra |
| Ellipsoid | War Office a = 6378300 m · 1/f = 296 |
| Base geographic system | EPSG:4168 — Accra |
| Unit | metre (E east, N north) |
| Transformation to WGS 84 | Accra to WGS 84 (3) (EPSG:15495) — accuracy 25 m |
| Scope | Oil and gas exploration and production. |
Projection parameters
| Parameter | Value | Unit |
|---|---|---|
| Latitude of natural origin | 0 | degree |
| Longitude of natural origin | -1 | degree |
| Scale factor at natural origin | 0.9996 | unity |
| False easting | 500000 | metre |
| False northing | 0 | metre |
proj4 definition
+proj=tmerc +lat_0=0 +lon_0=-1 +k=0.9996 +x_0=500000 +y_0=0 +a=6378300 +rf=296 +units=m +towgs84=-171.16,17.29,325.21,0,0,0.814,-0.38 +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:2137.
WKT (ESRI format, the .prj content)
PROJCS["Accra_TM_1_NW",GEOGCS["GCS_Accra",DATUM["D_Accra",SPHEROID["War_Office",6378300.0,296.0]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",500000.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",-1.0],PARAMETER["Scale_Factor",0.9996],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0]]Other systems — Ghana
Source: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.