EPSG:4818 S-JTSK (Ferro)
Geographic system in latitude and longitude, in use: Europe - Czechoslovakia. 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:4818 |
|---|---|
| Name | S-JTSK (Ferro) |
| Type | Geographic system |
| Area of use |
Europe - Czechoslovakia Czechia; Slovakia. |
| Bounds | W 12,09° · S 47,73° · E 22,56° · N 51,06° |
| Countries | Czechia, Slovakia |
| Datum | System of the Unified Trigonometrical Cadastral Network (Ferro) |
| Ellipsoid | Bessel 1841 a = 6377397.155 m · 1/f = 299.1528128 |
| Prime meridian | Ferro -17.666666666666668 degree |
| Unit | degree (Lat north, Lon east) |
| Transformation to WGS 84 | No simple transformation published (ellipsoid alone) |
| Scope | Geodesy. |
proj4 definition
+proj=longlat +ellps=bessel +pm=ferro +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:4818.
WKT (ESRI format, the .prj content)
GEOGCS["GCS_S_JTSK_Ferro",DATUM["System_of_the_Unified_Trigonometrical_Cadastral_Network_(Ferro)",SPHEROID["Bessel_1841",6377397.155,299.1528128]],PRIMEM["Ferro",-17.6666666666667],UNIT["Degree",0.0174532925199433]]Other systems — Czechia
- EPSG:2398Pulkovo 1942(83) / 3-degree Gauss-Kruger zone 4
- EPSG:2399Pulkovo 1942(83) / 3-degree Gauss-Kruger zone 5
- EPSG:3836Pulkovo 1942(83) / Gauss-Kruger zone 4
- EPSG:3838Pulkovo 1942(58) / 3-degree Gauss-Kruger zone 4
- EPSG:3841Pulkovo 1942(83) / 3-degree Gauss-Kruger zone 6
- EPSG:4156S-JTSK
- EPSG:5221S-JTSK (Ferro) / Krovak East North
- EPSG:5224S-JTSK/05 (Ferro) / Modified Krovak
- EPSG:5225S-JTSK/05 (Ferro) / Modified Krovak East North
- EPSG:5228S-JTSK/05
- EPSG:5229S-JTSK/05 (Ferro)
- EPSG:5513S-JTSK / Krovak
- EPSG:5514S-JTSK / Krovak East North
- EPSG:5515S-JTSK/05 / Modified Krovak
- EPSG:5516S-JTSK/05 / Modified Krovak East North
- EPSG:5671Pulkovo 1942(58) / 3-degree Gauss-Kruger zone 4 (E-N)
- EPSG:5674Pulkovo 1942(83) / 3-degree Gauss-Kruger zone 4 (E-N)
- EPSG:5675Pulkovo 1942(83) / 3-degree Gauss-Kruger zone 5 (E-N)
Source: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.