EPSG systems

EPSG:3320 IGC 1962 / Congo TM zone 16

Projected system (Transverse Mercator) in use: Congo DR (Zaire) - 6th parallel south 15°E to 17°E. 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:3320
NameIGC 1962 / Congo TM zone 16
TypeProjected system — Transverse Mercator
Area of use Congo DR (Zaire) - 6th parallel south 15°E to 17°E
The Democratic Republic of the Congo (Zaire) - adjacent to 6th parallel south traverse between 15°E and 17°E.
Bounds W 15,00° · S -5,87° · E 17,00° · N -3,29°
Countries Congo - Kinshasa
DatumIGC 1962 Arc of the 6th Parallel South
Ellipsoid Clarke 1880 (RGS) a = 6378249.145 m · 1/f = 293.465
Base geographic system EPSG:4697 — IGC 1962 6th Parallel South
Unit metre (E east, N north)
Transformation to WGS 84 No simple transformation published (ellipsoid alone)
ScopeCadastre, engineering survey, topographic mapping (medium scale).

Projection parameters

ParameterValueUnit
Latitude of natural origin0degree
Longitude of natural origin16degree
Scale factor at natural origin0.9999unity
False easting500000metre
False northing10000000metre

proj4 definition

+proj=tmerc +lat_0=0 +lon_0=16 +k=0.9999 +x_0=500000 +y_0=10000000 +a=6378249.145 +rf=293.465 +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:3320.

WKT (ESRI format, the .prj content)

PROJCS["IGC_1962_Congo_TM_Zone_16",GEOGCS["GCS_IGC_1962_6th_Parallel_South",DATUM["D_IGC_1962_Arc_of_the_6th_Parallel_South",SPHEROID["Clarke_1880_RGS",6378249.145,293.465]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",500000.0],PARAMETER["False_Northing",10000000.0],PARAMETER["Central_Meridian",16.0],PARAMETER["Scale_Factor",0.9999],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0]]

All systems — Congo - Kinshasa

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