EPSG:4174 Sierra Leone 1924
Geographic system in latitude and longitude, in use: Sierra Leone - Freetown Peninsula. Datum, ellipsoid and transformation to WGS 84 below.
EPSG publishes no simple transformation to WGS 84 for this datum: conversion works on the ellipsoid alone and can be off by tens of metres.
| Code | EPSG:4174 |
|---|---|
| Name | Sierra Leone 1924 |
| Type | Geographic system |
| Area of use | Sierra Leone - Freetown Peninsula |
| Bounds | W -13,34° · S 8,32° · E -13,13° · N 8,55° |
| Countries | Sierra Leone |
| Datum | Sierra Leone Colony 1924 |
| Ellipsoid | War Office a = 6378300 m · 1/f = 296 |
| Unit | degree (Lat north, Lon east) |
| Transformation to WGS 84 | No simple transformation published (ellipsoid alone) |
| Scope | Geodesy. |
proj4 definition
+proj=longlat +a=6378300 +rf=296 +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:4174.
WKT (ESRI format, the .prj content)
GEOGCS["GCS_Sierra_Leone_1924",DATUM["D_Sierra_Leone_1924",SPHEROID["War_Office",6378300.0,296.0]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]]Other systems — Sierra Leone
Source: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.