EPSG:4743 — Karbala 1979 (projected-variant geographic)
Karbala 1979 (projected-variant geographic) (EPSG:4743) — a Geographic (degrees) system on the a=6378249.145 datum, used in Iraq. Parameters, proj4, WKT, accuracy ±0.1 m…
At a glance
- EPSG
- 4743
- Name
- Karbala 1979 (projected-variant geographic)
- Kind
- Geographic (degrees)
- Family
- Geographic (longitude/latitude)
- Ellipsoid
- a=6378249.145
- Accuracy
- ±0.1 m (vs PROJ)
- Countries
- Iraq
Area of use
| West | 38.79° |
| South | 29.06° |
| East | 48.61° |
| North | 37.39° |
Projection parameters
| Projection | longlat |
| Semi-major axis | 6378249.145 |
| Inverse flattening | 293.465 |
| Helmert shift to WGS84 | 70.995,-335.916,262.898,0,0,0,0 |
+proj=longlat +a=6378249.145 +rf=293.465 +no_defs +towgs84=70.995,-335.916,262.898,0,0,0,0
GEOGCS["GCS_Karbala 1979 (projected-variant geographic)",DATUM["D_Custom_6378249.145",SPHEROID["Custom_6378249.145",6378249.145,293.465],TOWGS84[70.995,-335.916,262.898,0,0,0,0]],PRIMEM["Greenwich",0],UNIT["Degree",0.0174532925199433],AUTHORITY["EPSG","4743"]]
Sample conversion
Iraq capital: WGS84 44.36610, 33.31520 → EPSG:4743 44.3692119, 33.3151968
Values are within ±0.1 m at the test point.
About the Geographic (longitude/latitude) family
Karbala 1979 (projected-variant geographic) 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:3391 — Karbala 1979 / UTM zone 37N
- EPSG:3392 — Karbala 1979 / UTM zone 38N
- EPSG:3393 — Karbala 1979 / UTM zone 39N
- EPSG:3394 — Nahrwan 1934 / Iraq zone (LCC)
- EPSG:3889 — IGRS
- EPSG:3890 — IGRS / UTM zone 37N
- EPSG:32637 — WGS 84 / UTM zone 37N
- EPSG:32638 — WGS 84 / UTM zone 38N
- EPSG:32639 — WGS 84 / UTM zone 39N
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