EPSG:4256 Mahe 1971
Geographic system in latitude and longitude, in use: Seychelles - Mahe Island. Datum, ellipsoid and transformation to WGS 84 below.
| Code | EPSG:4256 |
|---|---|
| Name | Mahe 1971 |
| Type | Geographic system |
| Area of use | Seychelles - Mahe Island |
| Bounds | W 55,30° · S -4,86° · E 55,59° · N -4,50° |
| Countries | Seychelles |
| Datum | Mahe 1971 |
| Ellipsoid | Clarke 1880 (RGS) a = 6378249.145 m · 1/f = 293.465 |
| Unit | degree (Lat north, Lon east) |
| Transformation to WGS 84 | Mahe 1971 to WGS 84 (1) (EPSG:1164) — accuracy 44 m |
| Scope | Military survey. |
proj4 definition
+proj=longlat +a=6378249.145 +rf=293.465 +towgs84=41,-220,-134 +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:4256.
WKT (ESRI format, the .prj content)
GEOGCS["GCS_Mahe_1971",DATUM["D_Mahe_1971",SPHEROID["Clarke_1880_RGS",6378249.145,293.465]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]]Other systems — Seychelles
Source: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.