EPSG systems

EPSG:4283 GDA94

Geographic system in latitude and longitude, in use: Australia - GDA. Datum, ellipsoid and transformation to WGS 84 below.

System record
CodeEPSG:4283
NameGDA94
TypeGeographic system
Area of use Australia - GDA
Australia including Lord Howe Island, Macquarie Island, Ashmore and Cartier Islands, Christmas Island, Cocos (Keeling) Islands, Norfolk Island. All onshore and offshore.
Bounds W 93,41° · S -60,55° · E 173,34° · N -8,47°
Countries Australia
DatumGeocentric Datum of Australia 1994
Ellipsoid GRS 1980 a = 6378137 m · 1/f = 298.257222101
Unit degree (Lat north, Lon east)
Transformation to WGS 84 GDA94 to WGS 84 (1) (EPSG:1150) — accuracy 3 m
ScopeHorizontal component of 3D system.

proj4 definition

+proj=longlat +ellps=GRS80 +towgs84=0,0,0 +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:4283.

WKT (ESRI format, the .prj content)

GEOGCS["GCS_GDA_1994",DATUM["D_GDA_1994",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]]

All systems — Australia

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