EPSG systems

EPSG:8907 CR-SIRGAS

Geographic system in latitude and longitude, in use: Costa Rica. 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:8907
NameCR-SIRGAS
TypeGeographic system
Area of use Costa Rica
Costa Rica - onshore and offshore.
Bounds W -90,45° · S 2,15° · E -81,43° · N 11,77°
Countries Costa Rica
DatumCR-SIRGAS
Ellipsoid GRS 1980 a = 6378137 m · 1/f = 298.257222101
Unit degree (Lat north, Lon east)
Transformation to WGS 84 No simple transformation published (ellipsoid alone)
ScopeHorizontal component of 3D system.

proj4 definition

+proj=longlat +ellps=GRS80 +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:8907.

WKT (ESRI format, the .prj content)

GEOGCS["GCS_CR-SIRGAS",DATUM["D_CR-SIRGAS",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]]

All systems — Costa Rica

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