EPSG systems

EPSG:4238 ID74

Geographic system in latitude and longitude, in use: Indonesia - onshore. Datum, ellipsoid and transformation to WGS 84 below.

System record
CodeEPSG:4238
NameID74
TypeGeographic system
Area of use Indonesia - onshore
Bounds W 95,16° · S -10,98° · E 141,01° · N 5,97°
Countries Indonesia
DatumIndonesian Datum 1974
Ellipsoid Indonesian National Spheroid a = 6378160 m · 1/f = 298.247
Unit degree (Lat north, Lon east)
Transformation to WGS 84 ID74 to WGS 84 (3) (EPSG:1833) — accuracy 3 m
ScopeGeodesy.

proj4 definition

+proj=longlat +a=6378160 +rf=298.247 +towgs84=-1.977,-13.06,-9.993,0.364,0.254,0.689,-1.037 +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:4238.

WKT (ESRI format, the .prj content)

GEOGCS["GCS_Indonesian_1974",DATUM["D_Indonesian_1974",SPHEROID["Indonesian",6378160.0,298.247]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]]

All systems — Indonesia

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