EPSG:4903 Madrid 1870 (Madrid)
Geographic system in latitude and longitude, in use: Spain - mainland onshore. Datum, ellipsoid and transformation to WGS 84 below.
EPSG publishes no simple transformation to WGS 84 for this datum: conversion works on the ellipsoid alone and can be off by tens of metres.
| Code | EPSG:4903 |
|---|---|
| Name | Madrid 1870 (Madrid) |
| Type | Geographic system |
| Area of use | Spain - mainland onshore |
| Bounds | W -9,37° · S 35,95° · E 3,39° · N 43,82° |
| Countries | Spain |
| Datum | Madrid 1870 (Madrid) |
| Ellipsoid | Struve 1860 a = 6378298.3 m · 1/f = 294.73 |
| Prime meridian | Madrid -3.6873750000000003 degree |
| Unit | degree (Lat north, Lon east) |
| Transformation to WGS 84 | No simple transformation published (ellipsoid alone) |
| Scope | Geodesy. |
proj4 definition
+proj=longlat +a=6378298.3 +rf=294.73 +pm=-3.687375 +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:4903.
WKT (ESRI format, the .prj content)
GEOGCS["GCS_Madrid_1870_Madrid",DATUM["D_Madrid_1870",SPHEROID["Struve_1860",6378298.3,294.73]],PRIMEM["Madrid",-3.687375],UNIT["Degree",0.0174532925199433]]Other systems — Spain
- EPSG:2062Madrid 1870 (Madrid) / Spain LCC
- EPSG:4081REGCAN95
- EPSG:4082REGCAN95 / UTM zone 27N
- EPSG:4083REGCAN95 / UTM zone 28N
- EPSG:4728PN84
- EPSG:5634REGCAN95 / LCC Europe
- EPSG:5635REGCAN95 / LAEA Europe
- EPSG:9403PN68
- EPSG:9404PN68 / UTM zone 27N
- EPSG:9405PN68 / UTM zone 28N
- EPSG:9406PN84 / UTM zone 27N
- EPSG:9407PN84 / UTM zone 28N
- EPSG:23029ED50 / UTM zone 29N
Source: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.