EPSG systems

EPSG:8910 CR-SIRGAS / UTM zone 17N

Projected system (Transverse Mercator) in use: Costa Rica - offshore Caribbean. 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.

System record
CodeEPSG:8910
NameCR-SIRGAS / UTM zone 17N
TypeProjected system — Transverse Mercator
Area of use Costa Rica - offshore Caribbean
Costa Rica - offshore - Caribbean sea.
Bounds W -83,60° · S 9,60° · E -81,43° · N 11,77°
Countries Costa Rica
DatumCR-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)
ScopeOil and gas exploration and production.

Projection parameters

ParameterValueUnit
Latitude of natural origin0degree
Longitude of natural origin-81degree
Scale factor at natural origin0.9996unity
False easting500000metre
False northing0metre

proj4 definition

+proj=utm +zone=17 +ellps=GRS80 +units=m +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:8910.

WKT (ESRI format, the .prj content)

PROJCS["CR-SIRGAS_UTM_Zone_17N",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",-81.0],PARAMETER["Scale_Factor",0.9996],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0]]

All systems — Costa Rica

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