EPSG systems

EPSG:4199 Egypt 1930

Geographic system in latitude and longitude, in use: Egypt - onshore. 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.

System record
CodeEPSG:4199
NameEgypt 1930
TypeGeographic system
Area of use Egypt - onshore
Bounds W 24,70° · S 21,97° · E 36,95° · N 31,68°
Countries Egypt
DatumEgypt 1930
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)
ScopeGeodesy.

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:4199.

WKT (ESRI format, the .prj content)

GEOGCS["GCS_Egypt_1930",DATUM["D_Egypt_1930",SPHEROID["International_1924",6378388.0,297.0]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]]

All systems — Egypt

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