EPSG:30791 Nord Sahara 1959 / Nord Algerie
Projected system (Lambert Conic Conformal (1SP)) in use: Algeria - north of 34°39'N. The full definition below, and conversion in one click.
| Code | EPSG:30791 |
|---|---|
| Name | Nord Sahara 1959 / Nord Algerie |
| Type | Projected system — Lambert Conic Conformal (1SP) |
| Area of use |
Algeria - north of 34°39'N Algeria - onshore north of 38.5 grads North (34°39'N). |
| Bounds | W -2,22° · S 34,64° · E 8,64° · N 37,14° |
| Countries | Algeria |
| Datum | Nord Sahara 1959 |
| Ellipsoid | Clarke 1880 (RGS) a = 6378249.145 m · 1/f = 293.465 |
| Base geographic system | EPSG:4307 — Nord Sahara 1959 |
| Unit | metre (X east, Y north) |
| Transformation to WGS 84 | Nord Sahara 1959 to WGS 84 (11) (EPSG:10296) — accuracy 1 m |
| Scope | Engineering survey, topographic mapping. |
| In Carte | Built-in grid (code AN), with the reference cities of the guide. |
Projection parameters
| Parameter | Value | Unit |
|---|---|---|
| Latitude of natural origin | 40 | grad |
| Longitude of natural origin | 3 | grad |
| Scale factor at natural origin | 0.999625544 | unity |
| False easting | 500135 | metre |
| False northing | 300090 | metre |
proj4 definition
+proj=lcc +lat_1=36 +lat_0=36 +lon_0=2.7 +k_0=0.999625544 +x_0=500135 +y_0=300090 +a=6378249.145 +rf=293.465 +towgs84=-267.407,-47.068,446.357,-0.179423,5.577661,-1.27762,1.204866 +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:30791.
WKT (ESRI format, the .prj content)
PROJCS["Nord_Sahara_1959_Voirol_Unifie_Nord",GEOGCS["GCS_Nord_Sahara_1959",DATUM["D_Nord_Sahara_1959",SPHEROID["Clarke_1880_RGS",6378249.145,293.465]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Lambert_Conformal_Conic"],PARAMETER["False_Easting",500135.0],PARAMETER["False_Northing",300090.0],PARAMETER["Central_Meridian",2.7],PARAMETER["Standard_Parallel_1",36.0],PARAMETER["Scale_Factor",0.999625544],PARAMETER["Latitude_Of_Origin",36.0],UNIT["Meter",1.0]]Other systems — Algeria
- EPSG:4307Nord Sahara 1959
- EPSG:4671Voirol 1879
- EPSG:4811Voirol 1875 (Paris)
- EPSG:4821Voirol 1879 (Paris)
- EPSG:10299RGSH2020
- EPSG:22229RGSH2020 / UTM zone 29N
- EPSG:22230RGSH2020 / UTM zone 30N
- EPSG:22231RGSH2020 / UTM zone 31N
- EPSG:22232RGSH2020 / UTM zone 32N
- EPSG:30491Voirol 1875 / Nord Algerie (ancienne)
- EPSG:30492Voirol 1875 / Sud Algerie (ancienne)
- EPSG:30493Voirol 1879 / Nord Algerie (ancienne)
- EPSG:30494Voirol 1879 / Sud Algerie (ancienne)
- EPSG:30729Nord Sahara 1959 / UTM zone 29N
- EPSG:30730Nord Sahara 1959 / UTM zone 30N
- EPSG:30731Nord Sahara 1959 / UTM zone 31N
- EPSG:30732Nord Sahara 1959 / UTM zone 32N
- EPSG:30792Nord Sahara 1959 / Sud Algerie
Source: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.