EPSG systems

EPSG:5516 S-JTSK/05 / Modified Krovak East North

Projected system (Krovak Modified (North Orientated)) in use: Czechia. The full definition below, and conversion in one click.

System record
CodeEPSG:5516
NameS-JTSK/05 / Modified Krovak East North
TypeProjected system — Krovak Modified (North Orientated)
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
Ellipsoid Bessel 1841 a = 6377397.155 m · 1/f = 299.1528128
Base geographic system EPSG:5228 — S-JTSK/05
Unit metre (X east, Y north)
Transformation to WGS 84 S-JTSK/05 to WGS 84 (1) (EPSG:5227) — accuracy 1 m
ScopeGIS.

Projection parameters

ParameterValueUnit
Latitude of projection centre49.5degree
Longitude of origin24.833333333333332degree
Co-latitude of cone axis30.288139722222223degree
Latitude of pseudo standard parallel78.5degree
Scale factor on pseudo standard parallel0.9999unity
False easting5000000metre
False northing5000000metre

proj4 definition

+proj=mod_krovak +lat_0=49.5 +lon_0=24.8333333333333 +alpha=30.2881397222222 +k=0.9999 +x_0=5000000 +y_0=5000000 +ellps=bessel +units=m +towgs84=572.213,85.334,461.94,4.9732,1.529,5.2484,3.5378 +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:5516.

All systems — Czechia

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