EPSG systems

EPSG:4615 Porto Santo

Geographic system in latitude and longitude, in use: Portugal - Madeira archipelago onshore. Datum, ellipsoid and transformation to WGS 84 below.

System record
CodeEPSG:4615
NamePorto Santo
TypeGeographic system
Area of use Portugal - Madeira archipelago onshore
Portugal - Madeira, Porto Santo and Desertas islands - onshore.
Bounds W -17,31° · S 32,35° · E -16,23° · N 33,15°
Countries Portugal
DatumPorto Santo 1936
Ellipsoid International 1924 a = 6378388 m · 1/f = 297
Unit degree (Lat north, Lon east)
Transformation to WGS 84 Porto Santo to WGS 84 (1) (EPSG:1888) — accuracy 44 m
ScopeGeodesy.

proj4 definition

+proj=longlat +ellps=intl +towgs84=-499,-249,314 +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:4615.

WKT (ESRI format, the .prj content)

GEOGCS["GCS_Porto_Santo_1936",DATUM["D_Porto_Santo_1936",SPHEROID["International_1924",6378388.0,297.0]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]]

All systems — Portugal

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