EPSG systems

EPSG:20255 AGD66 / AMG zone 55

Projected system (Transverse Mercator) in use: Australasia - Australia and PNG - 144°E to 150°E. The full definition below, and conversion in one click.

System record
CodeEPSG:20255
NameAGD66 / AMG zone 55
TypeProjected system — Transverse Mercator
Area of use Australasia - Australia and PNG - 144°E to 150°E
Australia - onshore and offshore between 144°E and 150°E. Papua New Guinea (PNG) - onshore between 144°E and 150°E.
Bounds W 144,00° · S -47,20° · E 150,01° · N -1,30°
Countries Australia, Papua New Guinea
DatumAustralian Geodetic Datum 1966
Ellipsoid Australian National Spheroid a = 6378160 m · 1/f = 298.25
Base geographic system EPSG:4202 — AGD66
Unit metre (E east, N north)
Transformation to WGS 84 AGD66 to WGS 84 (18) (EPSG:15980) — accuracy 3 m
ScopeEngineering survey, topographic mapping.

Projection parameters

ParameterValueUnit
Latitude of natural origin0degree
Longitude of natural origin147degree
Scale factor at natural origin0.9996unity
False easting500000metre
False northing10000000metre

proj4 definition

+proj=utm +zone=55 +south +ellps=aust_SA +units=m +towgs84=-117.808,-51.536,137.784,0.303,0.446,0.234,-0.29 +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:20255.

WKT (ESRI format, the .prj content)

PROJCS["AGD_1966_AMG_Zone_55",GEOGCS["GCS_Australian_1966",DATUM["D_Australian_1966",SPHEROID["Australian",6378160.0,298.25]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",500000.0],PARAMETER["False_Northing",10000000.0],PARAMETER["Central_Meridian",147.0],PARAMETER["Scale_Factor",0.9996],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0]]

All systems — Australia

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