EPSG systems

EPSG:30792 Nord Sahara 1959 / Sud Algerie

Projected system (Lambert Conic Conformal (1SP)) in use: Algeria - 31°30'N to 34°39'N. The full definition below, and conversion in one click.

System record
CodeEPSG:30792
NameNord Sahara 1959 / Sud Algerie
TypeProjected system — Lambert Conic Conformal (1SP)
Area of use Algeria - 31°30'N to 34°39'N
Algeria - 35 grads to 38.5 grads North (31°30'N to 34°39'N).
Bounds W -3,85° · S 31,49° · E 9,22° · N 34,66°
Countries Algeria
DatumNord 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
ScopeEngineering survey, topographic mapping.
In CarteBuilt-in grid (code AS), with the reference cities of the guide.

Projection parameters

ParameterValueUnit
Latitude of natural origin37grad
Longitude of natural origin3grad
Scale factor at natural origin0.999625769unity
False easting500135metre
False northing300090metre

proj4 definition

+proj=lcc +lat_1=33.3 +lat_0=33.3 +lon_0=2.7 +k_0=0.999625769 +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_defs

Paste it into QGIS, proj4js, PostGIS (spatial_ref_sys) or GDAL. +towgs84 carries the EPSG transformation to WGS 84; the official code stays EPSG:30792.

WKT (ESRI format, the .prj content)

PROJCS["Nord_Sahara_1959_Voirol_Unifie_Sud",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",33.3],PARAMETER["Scale_Factor",0.999625769],PARAMETER["Latitude_Of_Origin",33.3],UNIT["Meter",1.0]]

All systems — Algeria

Source: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.