EPSG systems

EPSG:23889 ID74 / UTM zone 49S

Projected system (Transverse Mercator) in use: Indonesia - 108°E to 114°E, S hemisphere onshore. The full definition below, and conversion in one click.

System record
CodeEPSG:23889
NameID74 / UTM zone 49S
TypeProjected system — Transverse Mercator
Area of use Indonesia - 108°E to 114°E, S hemisphere onshore
Indonesia - onshore south of equator and between 108°E and 114°E.
Bounds W 108,00° · S -8,67° · E 114,00° · N 0,00°
Countries Indonesia
DatumIndonesian Datum 1974
Ellipsoid Indonesian National Spheroid a = 6378160 m · 1/f = 298.247
Base geographic system EPSG:4238 — ID74
Unit metre (E east, N north)
Transformation to WGS 84 ID74 to WGS 84 (3) (EPSG:1833) — accuracy 3 m
ScopeEngineering survey, topographic mapping.

Projection parameters

ParameterValueUnit
Latitude of natural origin0degree
Longitude of natural origin111degree
Scale factor at natural origin0.9996unity
False easting500000metre
False northing10000000metre

proj4 definition

+proj=utm +zone=49 +south +a=6378160 +rf=298.247 +units=m +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:23889.

WKT (ESRI format, the .prj content)

PROJCS["Indonesian_1974_UTM_Zone_49S",GEOGCS["GCS_Indonesian_1974",DATUM["D_Indonesian_1974",SPHEROID["Indonesian",6378160.0,298.247]],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 — Indonesia

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