EPSG:4223 — Carthage
Carthage (EPSG:4223) — a Geographic (degrees) system on the clrk80ign datum, used in Tunisia. Parameters, proj4, WKT, accuracy ±0.1 m, plus a free converter to WGS84 and…
At a glance
- EPSG
- 4223
- Name
- Carthage
- Kind
- Geographic (degrees)
- Family
- Geographic (longitude/latitude)
- Ellipsoid
- clrk80ign
- Accuracy
- ±0.1 m (vs PROJ)
- Countries
- Tunisia
Area of use
| West | 7.49° |
| South | 30.23° |
| East | 13.67° |
| North | 38.41° |
Projection parameters
| Projection | longlat |
| Ellipsoid | clrk80ign |
| Helmert shift to WGS84 | -263,6,431,0,0,0,0 |
+proj=longlat +ellps=clrk80ign +no_defs +towgs84=-263,6,431,0,0,0,0
GEOGCS["GCS_Carthage",DATUM["D_Clarke_1880_IGN",SPHEROID["Clarke_1880_IGN",6378249.2,293.4660212936269],TOWGS84[-263,6,431,0,0,0,0]],PRIMEM["Greenwich",0],UNIT["Degree",0.0174532925199433],AUTHORITY["EPSG","4223"]]
Sample conversion
Tunisia capital: WGS84 10.18150, 36.80650 → EPSG:4223 10.1809129, 36.8050172
Values are within ±0.1 m at the test point.
About the Geographic (longitude/latitude) family
Carthage 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:2088 — Carthage / TM 6
- EPSG:22332 — Carthage / UTM zone 32N
- EPSG:22391 — Carthage / Nord Tunisie
- EPSG:22392 — Carthage / Sud Tunisie
- EPSG:32632 — WGS 84 / UTM zone 32N
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