EPSG:6721 — GDA94 / CIG94

Projected · Christmas Island - onshore

Export Formats

OGC WKT

PROJCS[
    "GDA94 / CIG94",
    GEOGCS[
        "GDA94",
        DATUM[
            "Geocentric_Datum_of_Australia_1994",
            SPHEROID["GRS 1980",6378137,298.257222101],
            TOWGS84[0,0,0,0,0,0,0]
        ],
        PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],
        UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],
        AUTHORITY["EPSG","4283"]
    ],
    PROJECTION["Transverse_Mercator"],
    PARAMETER["latitude_of_origin",0],
    PARAMETER["central_meridian",105.625],
    PARAMETER["scale_factor",1.00002514],
    PARAMETER["false_easting",50000],
    PARAMETER["false_northing",1300000],
    UNIT["metre",1,AUTHORITY["EPSG","9001"]],
    AXIS["Easting",EAST],
    AXIS["Northing",NORTH],
    AUTHORITY["EPSG","6721"]
]

WKT2

PROJCRS[
    "GDA94 / CIG94",
    BASEGEOGCRS[
        "GDA94",
        DATUM[
            "Geocentric Datum of Australia 1994",
            ELLIPSOID[
                "GRS 1980",
                6378137,
                298.257222101,
                LENGTHUNIT["metre",1,ID["EPSG",9001]],
                ID["EPSG",7019]
            ],
            ID["EPSG",6283]
        ],
        ID["EPSG",4283]
    ],
    CONVERSION[
        "Christmas Island Grid 1994",
        METHOD["Transverse Mercator",ID["EPSG",9807]],
        PARAMETER[
            "Latitude of natural origin",
            0,
            ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],
            ID["EPSG",8801]
        ],
        PARAMETER[
            "Longitude of natural origin",
            105.625,
            ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],
            ID["EPSG",8802]
        ],
        PARAMETER[
            "Scale factor at natural origin",
            1.00002514,
            SCALEUNIT["unity",1,ID["EPSG",9201]],
            ID["EPSG",8805]
        ],
        PARAMETER[
            "False easting",
            50000,
            LENGTHUNIT["metre",1,ID["EPSG",9001]],
            ID["EPSG",8806]
        ],
        PARAMETER[
            "False northing",
            1300000,
            LENGTHUNIT["metre",1,ID["EPSG",9001]],
            ID["EPSG",8807]
        ],
        ID["EPSG",6717]
    ],
    CS[Cartesian,2,ID["EPSG",4400]],
    AXIS["Easting (E)",east],
    AXIS["Northing (N)",north],
    LENGTHUNIT["metre",1,ID["EPSG",9001]],
    ID["EPSG",6721]
]

PROJ.4

+proj=tmerc +lat_0=0 +lon_0=105.625 +k=1.00002514 +x_0=50000 +y_0=1300000 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs

Proj4js

How to add a projection to Proj4js? →

proj4.defs("EPSG:6721", "+proj=tmerc +lat_0=0 +lon_0=105.625 +k=1.00002514 +x_0=50000 +y_0=1300000 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs");

JSON

{
  "type": "CoordinateReferenceSystem",
  "code": 6721,
  "name": "GDA94 / CIG94",
  "kind": "projected",
  "area": "Christmas Island - onshore",
  "unit": "metre",
  "bbox": [
    -10.63,
    105.48,
    -10.36,
    105.77
  ],
  "proj4": "+proj=tmerc +lat_0=0 +lon_0=105.625 +k=1.00002514 +x_0=50000 +y_0=1300000 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs"
}

PostGIS

How to add a projection to PostGIS? →

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (6721, 'EPSG', 6721, '+proj=tmerc +lat_0=0 +lon_0=105.625 +k=1.00002514 +x_0=50000 +y_0=1300000 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs', 'PROJCS["GDA94 / CIG94",GEOGCS["GDA94",DATUM["Geocentric_Datum_of_Australia_1994",SPHEROID["GRS 1980",6378137,298.257222101],TOWGS84[0,0,0,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4283"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",105.625],PARAMETER["scale_factor",1.00002514],PARAMETER["false_easting",50000],PARAMETER["false_northing",1300000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","6721"]]');

MapServer

How to add a projection to MapServer? →

PROJECTION
  "+proj=tmerc"
  "+lat_0=0"
  "+lon_0=105.625"
  "+k=1.00002514"
  "+x_0=50000"
  "+y_0=1300000"
  "+ellps=GRS80"
  "+towgs84=0,0,0,0,0,0,0"
  "+units=m"
  "+no_defs"
  "+type=crs"
END

GeoServer

How to add a projection to GeoServer? →

6721=PROJCS["GDA94 / CIG94",GEOGCS["GDA94",DATUM["Geocentric_Datum_of_Australia_1994",SPHEROID["GRS 1980",6378137,298.257222101],TOWGS84[0,0,0,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4283"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",105.625],PARAMETER["scale_factor",1.00002514],PARAMETER["false_easting",50000],PARAMETER["false_northing",1300000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","6721"]]

Related Coordinate Systems

Available Transformations (29)

Transformations inherited from base CRS: EPSG:4283 (GDA94)

Transformation	Source → Target	Accuracy (m)
GDA94 to GDA2020 (1)	4283 → 7844	0.01
GDA94 to GDA2020 (4)	4283 → 7844	0.05
GDA94 to GDA2020 (5)	4283 → 7844	0.05
GDA94 to GDA2020 (3)	4283 → 7844	0.05
GDA94 to GDA2020 (2)	4283 → 7844	0.05
ITRF2014 to GDA94 (2)	9000 → 4283	0.06
ATRF2014 to GDA94 (2)	9309 → 4283	0.06
AGD66 to GDA94 (5)	4202 → 4283	0.1
AGD66 to GDA94 (6)	4202 → 4283	0.1
AGD66 to GDA94 (7)	4202 → 4283	0.1

Other CRS using Geocentric Datum of Australia 1994 (43)

Frequently Asked Questions

How do I add EPSG:6721 to GeoServer?

Add the following definition to your GeoServer configuration:

6721=PROJCS["GDA94 / CIG94",GEOGCS["GDA94",DATUM["Geocentric_Datum_of_Australia_1994",SPHEROID["GRS 1980",6378137,298.257222101],TOWGS84[0,0,0,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4283"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",105.625],PARAMETER["scale_factor",1.00002514],PARAMETER["false_easting",50000],PARAMETER["false_northing",1300000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","6721"]]

Read the full GeoServer guide →

How do I add EPSG:6721 to PostGIS?

Add the following definition to your PostGIS configuration:

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (6721, 'EPSG', 6721, '+proj=tmerc +lat_0=0 +lon_0=105.625 +k=1.00002514 +x_0=50000 +y_0=1300000 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs', 'PROJCS["GDA94 / CIG94",GEOGCS["GDA94",DATUM["Geocentric_Datum_of_Australia_1994",SPHEROID["GRS 1980",6378137,298.257222101],TOWGS84[0,0,0,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4283"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",105.625],PARAMETER["scale_factor",1.00002514],PARAMETER["false_easting",50000],PARAMETER["false_northing",1300000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","6721"]]');

Read the full PostGIS guide →

How do I add EPSG:6721 to MapServer?

Add the following definition to your MapServer configuration:

PROJECTION
  "+proj=tmerc"
  "+lat_0=0"
  "+lon_0=105.625"
  "+k=1.00002514"
  "+x_0=50000"
  "+y_0=1300000"
  "+ellps=GRS80"
  "+towgs84=0,0,0,0,0,0,0"
  "+units=m"
  "+no_defs"
  "+type=crs"
END

Read the full MapServer guide →

How do I use EPSG:6721 with Proj4js?

Add the following definition to your Proj4js configuration:

proj4.defs("EPSG:6721", "+proj=tmerc +lat_0=0 +lon_0=105.625 +k=1.00002514 +x_0=50000 +y_0=1300000 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs");

Read the full Proj4js guide →

Type

Projected

Unit

metre

Geodetic CRS

GDA94

Datum

Geocentric Datum of Australia 1994

Ellipsoid

GRS 1980

Prime Meridian

Greenwich

Area of Use

Christmas Island - onshore

Christmas Island - onshore.

Coordinate System

Cartesian 2D CS. Axes: easting, northing (E,N). Orientations: east, north. UoM: m.

Center Coordinates

50000.00 139364.32

Projected Bounds

154293.52 34133.4565880.31 124427.68

WGS84 Bounds

-10.36 105.48105.77 -10.63

Data Source

EPSG

Information Source

Landgate (Government of Western Australia), www.landgate.wa.gov.au.

Revision Date

2017-03-19

Scope

Cadastre, engineering survey. Usage restricted to areas below 290m above sea level.

Remarks

Usage restricted to areas below 290m above sea level. Replaces CIG85 and WGS 84 / CIG92 (CRS codes 6715 and 6721). Replaced by GDA2020 / CIG2020 (CRS code 8018).

EPSG

6721