EPSG systems

EPSG:4170 SIRGAS 1995

Geographic system in latitude and longitude, in use: South America - SIRGAS 1995 by country. Datum, ellipsoid and transformation to WGS 84 below.

System record
CodeEPSG:4170
NameSIRGAS 1995
TypeGeographic system
Area of use South America - SIRGAS 1995 by country
South America - onshore and offshore. Ecuador (mainland and Galapagos) - onshore and offshore.
Bounds W -113,21° · S -59,87° · E -26,00° · N 16,75°
Countries Ecuador
DatumSistema de Referencia Geocentrico para America del Sur 1995
Ellipsoid GRS 1980 a = 6378137 m · 1/f = 298.257222101
Unit degree (Lat north, Lon east)
Transformation to WGS 84 SIRGAS 1995 to WGS 84 (1) (EPSG:1581) — accuracy 2 m
ScopeHorizontal component of 3D system.

proj4 definition

+proj=longlat +ellps=GRS80 +towgs84=0,0,0 +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:4170.

WKT (ESRI format, the .prj content)

GEOGCS["GCS_SIRGAS",DATUM["D_SIRGAS",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]]

All systems — Ecuador

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