EPSG:CODE

EPSG:4938 — GDA94

Geocentric · Australia - GDA

Export Formats

OGC WKT
GEOCCS[
    "GDA94",
    DATUM[
        "Geocentric_Datum_of_Australia_1994",
        SPHEROID["GRS 1980",6378137,298.257222101,AUTHORITY["EPSG","7019"]],
        AUTHORITY["EPSG","6283"]
    ],
    PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],
    UNIT["metre",1,AUTHORITY["EPSG","9001"]],
    AXIS["Geocentric X",OTHER],
    AXIS["Geocentric Y",OTHER],
    AXIS["Geocentric Z",NORTH],
    AUTHORITY["EPSG","4938"]
]

Related Coordinate Systems

Available Transformations (12)

Transformation Source → Target Accuracy (m)
ITRF2008 to GDA94 (1)
5332 → 4938 0.03
ITRF2005 to GDA94 (1)
4896 → 4938 0.03
ATRF2014 to GDA94 (1)
9307 → 4938 0.035
ITRF2014 to GDA94 (1)
7789 → 4938 0.035
ITRF2000 to GDA94 (2)
4919 → 4938 0.06
ITRF2000 to GDA94 (1)
4919 → 4938 0.1
ITRF96 to GDA94 (1)
4917 → 4938 0.1
ITRF97 to GDA94 (1)
4918 → 4938 0.1
ITRF96 to GDA94 (2)
4917 → 4938 0.11
ITRF97 to GDA94 (2)
4918 → 4938 0.18

Other CRS using Geocentric Datum of Australia 1994 (43)

Frequently Asked Questions

How do I add EPSG:4938 to GeoServer?

Add the following definition to your GeoServer configuration: 

4938=GEOCCS["GDA94",DATUM["Geocentric_Datum_of_Australia_1994",SPHEROID["GRS 1980",6378137,298.257222101,AUTHORITY["EPSG","7019"]],AUTHORITY["EPSG","6283"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Geocentric X",OTHER],AXIS["Geocentric Y",OTHER],AXIS["Geocentric Z",NORTH],AUTHORITY["EPSG","4938"]]
Read the full GeoServer guide →

How do I add EPSG:4938 to PostGIS?

Add the following definition to your PostGIS configuration: 

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (4938, 'EPSG', 4938, '+proj=geocent +ellps=GRS80 +units=m +no_defs +type=crs', 'GEOCCS["GDA94",DATUM["Geocentric_Datum_of_Australia_1994",SPHEROID["GRS 1980",6378137,298.257222101,AUTHORITY["EPSG","7019"]],AUTHORITY["EPSG","6283"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Geocentric X",OTHER],AXIS["Geocentric Y",OTHER],AXIS["Geocentric Z",NORTH],AUTHORITY["EPSG","4938"]]');
Read the full PostGIS guide →

How do I add EPSG:4938 to MapServer?

Add the following definition to your MapServer configuration: 

PROJECTION
  "+proj=geocent"
  "+ellps=GRS80"
  "+units=m"
  "+no_defs"
  "+type=crs"
END
Read the full MapServer guide →

How do I use EPSG:4938 with Proj4js?

Add the following definition to your Proj4js configuration: 

proj4.defs("EPSG:4938", "+proj=geocent +ellps=GRS80 +units=m +no_defs +type=crs");
Read the full Proj4js guide →