EPSG:4286 — Qatar 1948
Qatar 1948 (EPSG:4286) — a Geographic (degrees) system on the helmert datum, used in Qatar. Parameters, proj4, WKT, accuracy ±0.1 m, plus a free converter to WGS84 and U…
At a glance
- EPSG
- 4286
- Name
- Qatar 1948
- Kind
- Geographic (degrees)
- Family
- Geographic (longitude/latitude)
- Ellipsoid
- helmert
- Accuracy
- ±0.1 m (vs PROJ)
- Countries
- Qatar
Area of use
| West | 50.69° |
| South | 24.55° |
| East | 51.68° |
| North | 26.20° |
Projection parameters
| Projection | longlat |
| Ellipsoid | helmert |
+proj=longlat +ellps=helmert +no_defs
GEOGCS["GCS_Qatar 1948",DATUM["D_Helmert_1906",SPHEROID["Helmert_1906",6378200,298.3]],PRIMEM["Greenwich",0],UNIT["Degree",0.0174532925199433],AUTHORITY["EPSG","4286"]]
Sample conversion
Qatar capital: WGS84 51.53100, 25.28540 → EPSG:4286 51.5310000, 25.2854000
Values are within ±0.1 m at the test point.
About the Geographic (longitude/latitude) family
Qatar 1948 is a geographic coordinate system: positions are longitude and latitude in degrees on its reference ellipsoid, not metres on a plane. It is the datum layer that projected grids (UTM, national belts) are built upon.
Because it is unprojected, distances and areas cannot be measured directly from its degrees — convert to a metric projected system (or use a geodesic calculation) first. This page's converter does exactly that.
Related systems
- EPSG:2099 — Qatar 1948 / Qatar Grid
- EPSG:2932 — QND95 / Qatar National Grid
- EPSG:4285 — Qatar 1974
- EPSG:4614 — QND95
- EPSG:28600 — Qatar 1974 / Qatar National Grid
- EPSG:32639 — WGS 84 / UTM zone 39N
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