EPSG systems

EPSG:5229 S-JTSK/05 (Ferro)

Geographic system in latitude and longitude, in use: Czechia. 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.

System record
CodeEPSG:5229
NameS-JTSK/05 (Ferro)
TypeGeographic system
Area of use Czechia
Bounds W 12,09° · S 48,58° · E 18,86° · N 51,06°
Countries Czechia
DatumSystem of the Unified Trigonometrical Cadastral Network/05 (Ferro)
Ellipsoid Bessel 1841 a = 6377397.155 m · 1/f = 299.1528128
Prime meridianFerro -17.666666666666668 degree
Unit degree (Lat north, Lon east)
Transformation to WGS 84 No simple transformation published (ellipsoid alone)
ScopeGeodesy.

proj4 definition

+proj=longlat +ellps=bessel +pm=ferro +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:5229.

WKT (ESRI format, the .prj content)

GEOGCS["GCS_S_JTSK/05_Ferro",DATUM["D_S_JTSK_05_Ferro",SPHEROID["Bessel_1841",6377397.155,299.1528128]],PRIMEM["Ferro",-17.6666666666667],UNIT["Degree",0.0174532925199433]]

All systems — Czechia

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