EPSG systems

EPSG:9697 REDGEOMIN / UTM zone 12S

Projected system (Transverse Mercator) in use: Chile - Easter Island 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.

Convert coordinates Open in Carte Download the .prj
System record
CodeEPSG:9697
NameREDGEOMIN / UTM zone 12S
TypeProjected system — Transverse Mercator
Area of use Chile - Easter Island onshore
Bounds W -109,51° · S -27,25° · E -109,16° · N -27,01°
Countries Chile
DatumRed Geodesica Para Mineria en Chile
Ellipsoid GRS 1980 a = 6378137 m · 1/f = 298.257222101
Base geographic system EPSG:9696 — REDGEOMIN
Unit metre (E east, N north)
Transformation to WGS 84 No simple transformation published (ellipsoid alone)
ScopeGeodesy, cadastre, engineering survey, topographic mapping.

Projection parameters

ParameterValueUnit
Latitude of natural origin0degree
Longitude of natural origin-111degree
Scale factor at natural origin0.9996unity
False easting500000metre
False northing10000000metre

proj4 definition

+proj=utm +zone=12 +south +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:9697.

WKT (ESRI format, the .prj content)

PROJCS["REDGEOMIN_UTM_zone_12S",GEOGCS["GCS_REDGEOMIN",DATUM["Red_Geodesica_Para_Mineria_en_Chile",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",10000000.0],PARAMETER["Central_Meridian",-111.0],PARAMETER["Scale_Factor",0.9996],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0]]

All systems — Chile

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