EPSG systems

EPSG:4704 Mhast (onshore)

Geographic system in latitude and longitude, in use: Africa - Angola (Cabinda) and DR Congo (Zaire) - coastal. Datum, ellipsoid and transformation to WGS 84 below.

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
Code	EPSG:4704
Name	Mhast (onshore)
Type	Geographic system
Area of use	Africa - Angola (Cabinda) and DR Congo (Zaire) - coastal Angola (Cabinda) - onshore and offshore; The Democratic Republic of the Congo (Zaire) - onshore coastal area and offshore.
Bounds	W 10,53° · S -6,04° · E 13,10° · N -4,38°
Countries	Angola, Congo - Brazzaville, Congo - Kinshasa
Datum	Mhast (onshore)
Ellipsoid	International 1924 a = 6378388 m · 1/f = 297
Unit	degree (Lat north, Lon east)
Transformation to WGS 84	No simple transformation published (ellipsoid alone)
Scope	Oil and gas exploration and production.

proj4 definition

+proj=longlat +ellps=intl +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:4704.

WKT (ESRI format, the .prj content)

GEOGCS["GCS_Mhast_Onshore",DATUM["D_Mhast_Onshore",SPHEROID["International_1924",6378388.0,297.0]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]]

All systems — Angola

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

proj4 definition

WKT (ESRI format, the .prj content)

Other systems — Angola