EPSG systems

EPSG:4241 Jamaica 1875

Geographic system in latitude and longitude, in use: Jamaica - onshore. 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.

System record
CodeEPSG:4241
NameJamaica 1875
TypeGeographic system
Area of use Jamaica - onshore
Bounds W -78,43° · S 17,64° · E -76,17° · N 18,58°
Countries Jamaica
DatumJamaica 1875
Ellipsoid Clarke 1880 a = 6378249.144808011 m · 1/f = 293.466307656
Unit degree (Lat north, Lon east)
Transformation to WGS 84 No simple transformation published (ellipsoid alone)
ScopeGeodesy.

proj4 definition

+proj=longlat +a=6378249.14480801 +b=6356514.96620413 +no_defs

Paste it into QGIS, proj4js, PostGIS (spatial_ref_sys) or GDAL. +towgs84 carries the EPSG transformation to WGS 84; the official code stays EPSG:4241.

WKT (ESRI format, the .prj content)

GEOGCS["GCS_Jamaica_1875",DATUM["D_Jamaica_1875",SPHEROID["Clarke_1880",6378249.14480801,293.466307655636]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]]

All systems — Jamaica

Source: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.