EPSG:4303 — TC(1948)
TC(1948) (EPSG:4303) — a Geographic (degrees) system on the helmert datum, used in United Arab Emirates. Parameters, proj4, WKT, accuracy ±0.1 m, plus a free converter t…
At a glance
- EPSG
- 4303
- Name
- TC(1948)
- Kind
- Geographic (degrees)
- Family
- Geographic (longitude/latitude)
- Ellipsoid
- helmert
- Accuracy
- ±0.1 m (vs PROJ)
- Countries
- United Arab Emirates
Area of use
| West | 51.56° |
| South | 22.63° |
| East | 56.03° |
| North | 25.34° |
Projection parameters
| Projection | longlat |
| Ellipsoid | helmert |
+proj=longlat +ellps=helmert +no_defs
GEOGCS["GCS_TC(1948)",DATUM["D_Helmert_1906",SPHEROID["Helmert_1906",6378200,298.3]],PRIMEM["Greenwich",0],UNIT["Degree",0.0174532925199433],AUTHORITY["EPSG","4303"]]
Sample conversion
United Arab Emirates capital: WGS84 54.37730, 24.45390 → EPSG:4303 54.3773000, 24.4539000
Values are within ±0.1 m at the test point.
About the Geographic (longitude/latitude) family
TC(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:4270 — Nahrwan 1967
- EPSG:27039 — Nahrwan 1967 / UTM zone 39N
- EPSG:27040 — Nahrwan 1967 / UTM zone 40N
- EPSG:30339 — TC(1948) / UTM zone 39N
- EPSG:30340 — TC(1948) / UTM zone 40N
- EPSG:32639 — WGS 84 / UTM zone 39N
- EPSG:32640 — WGS 84 / UTM zone 40N
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