EPSG:8908 CR-SIRGAS / CRTM05
Projected system (Transverse Mercator) in use: Costa Rica - 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:8908 |
|---|---|
| Name | CR-SIRGAS / CRTM05 |
| Type | Projected system — Transverse Mercator |
| Area of use | Costa Rica - onshore |
| Bounds | W -85,97° · S 7,98° · E -82,53° · N 11,22° |
| Countries | Costa Rica |
| Datum | CR-SIRGAS |
| Ellipsoid | GRS 1980 a = 6378137 m · 1/f = 298.257222101 |
| Base geographic system | EPSG:8907 — CR-SIRGAS |
| Unit | metre (E east, N north) |
| Transformation to WGS 84 | No simple transformation published (ellipsoid alone) |
| Scope | Cadastre, engineering survey, topographic mapping (large and medium scale). |
Projection parameters
| Parameter | Value | Unit |
|---|---|---|
| Latitude of natural origin | 0 | degree |
| Longitude of natural origin | -84 | degree |
| Scale factor at natural origin | 0.9999 | unity |
| False easting | 500000 | metre |
| False northing | 0 | metre |
proj4 definition
+proj=tmerc +lat_0=0 +lon_0=-84 +k=0.9999 +x_0=500000 +y_0=0 +ellps=GRS80 +units=m +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:8908.
WKT (ESRI format, the .prj content)
PROJCS["CR-SIRGAS_CRTM05",GEOGCS["GCS_CR-SIRGAS",DATUM["D_CR-SIRGAS",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",500000.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",-84.0],PARAMETER["Scale_Factor",0.9999],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0]]Other systems — Costa Rica
Source: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.