EPSG:2099 Qatar 1948 / Qatar Grid
Projected system (Cassini-Soldner) in use: Qatar - onshore. 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.
| Code | EPSG:2099 |
|---|---|
| Name | Qatar 1948 / Qatar Grid |
| Type | Projected system — Cassini-Soldner |
| Area of use | Qatar - onshore |
| Bounds | W 50,69° · S 24,55° · E 51,68° · N 26,20° |
| Countries | Qatar |
| Datum | Qatar 1948 |
| Ellipsoid | Helmert 1906 a = 6378200 m · 1/f = 298.3 |
| Base geographic system | EPSG:4286 — Qatar 1948 |
| Unit | metre (E east, N north) |
| Transformation to WGS 84 | No simple transformation published (ellipsoid alone) |
| Scope | Engineering survey, topographic mapping. |
Projection parameters
| Parameter | Value | Unit |
|---|---|---|
| Latitude of natural origin | 25.382361111111113 | degree |
| Longitude of natural origin | 50.76138888888889 | degree |
| False easting | 100000 | metre |
| False northing | 100000 | metre |
proj4 definition
+proj=cass +lat_0=25.3823611111111 +lon_0=50.7613888888889 +x_0=100000 +y_0=100000 +ellps=helmert +units=m +no_defsPaste it into QGIS, proj4js, PostGIS (spatial_ref_sys) or GDAL. +towgs84 carries the EPSG transformation to WGS 84; the official code stays EPSG:2099.
WKT (ESRI format, the .prj content)
PROJCS["Qatar_1948_Qatar_Grid",GEOGCS["GCS_Qatar_1948",DATUM["D_Qatar_1948",SPHEROID["Helmert_1906",6378200.0,298.3]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Cassini"],PARAMETER["False_Easting",100000.0],PARAMETER["False_Northing",100000.0],PARAMETER["Central_Meridian",50.7613888888889],PARAMETER["Scale_Factor",1.0],PARAMETER["Latitude_Of_Origin",25.3823611111111],UNIT["Meter",1.0]]Other systems — Qatar
Source: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.