EPSG:5589 Sibun Gorge 1922 / Colony Grid
Projected system (Transverse Mercator) in use: Belize - onshore. The full definition below, and conversion in one click.
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:5589 |
|---|---|
| Name | Sibun Gorge 1922 / Colony Grid |
| Type | Projected system — Transverse Mercator |
| Area of use | Belize - onshore |
| Bounds | W -89,22° · S 15,88° · E -87,72° · N 18,49° |
| Countries | Belize |
| Datum | Sibun Gorge 1922 |
| Ellipsoid | Clarke 1858 a = 6378293.645208759 m · 1/f = 294.260676369 |
| Base geographic system | EPSG:5464 — Sibun Gorge 1922 |
| Unit | Clarke's foot (E east, N north) |
| Transformation to WGS 84 | No simple transformation published (ellipsoid alone) |
| Scope | Engineering survey, topographic mapping. |
Projection parameters
| Parameter | Value | Unit |
|---|---|---|
| Latitude of natural origin | 17.061241944444443 | degree |
| Longitude of natural origin | -88.6318575 | degree |
| Scale factor at natural origin | 1 | unity |
| False easting | 217259.26 | Clarke's foot |
| False northing | 445474.83 | Clarke's foot |
proj4 definition
+proj=tmerc +lat_0=17.0612419444444 +lon_0=-88.6318575 +k=1 +x_0=66220.0283308276 +y_0=135779.50998853 +a=6378293.64520876 +b=6356617.98767984 +to_meter=0.3047972654 +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:5589.
WKT (ESRI format, the .prj content)
PROJCS["Sibun_Gorge_1922_Colony_Grid",GEOGCS["GCS_Sibun_Gorge_1922",DATUM["D_Sibun_Gorge_1922",SPHEROID["Clarke_1858",6378293.64520876,294.260676369261]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",217259.26],PARAMETER["False_Northing",445474.83],PARAMETER["Central_Meridian",-88.6318575],PARAMETER["Scale_Factor",1.0],PARAMETER["Latitude_Of_Origin",17.0612419444444],UNIT["Clarke's foot",0.3047972654]]Other systems — Belize
Source: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.