EPSG:4673 — Chatham Islands 1979

Geographic 2D · New Zealand - Chatham Islands group

Export Formats

OGC WKT

GEOGCS[
    "Chatham Islands 1979",
    DATUM[
        "Chatham_Islands_Datum_1979",
        SPHEROID["International 1924",6378388,297],
        TOWGS84[174.05,-25.49,112.57,0,0,-0.554,0.2263]
    ],
    PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],
    UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],
    AUTHORITY["EPSG","4673"]
]

WKT2

GEOGCRS[
    "Chatham Islands 1979",
    DATUM[
        "Chatham Islands Datum 1979",
        ELLIPSOID[
            "International 1924",
            6378388,
            297,
            LENGTHUNIT["metre",1,ID["EPSG",9001]],
            ID["EPSG",7022]
        ],
        ID["EPSG",6673]
    ],
    CS[ellipsoidal,2,ID["EPSG",6422]],
    AXIS["Geodetic latitude (Lat)",north],
    AXIS["Geodetic longitude (Lon)",east],
    ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],
    ID["EPSG",4673]
]

PROJ.4

+proj=longlat +ellps=intl +towgs84=174.05,-25.49,112.57,0,0,-0.554,0.2263 +no_defs +type=crs

Proj4js

How to add a projection to Proj4js? →

proj4.defs("EPSG:4673", "+proj=longlat +ellps=intl +towgs84=174.05,-25.49,112.57,0,0,-0.554,0.2263 +no_defs +type=crs");

JSON

{
  "type": "CoordinateReferenceSystem",
  "code": 4673,
  "name": "Chatham Islands 1979",
  "kind": "geographic 2D",
  "area": "New Zealand - Chatham Islands group",
  "unit": "degree (supplier to define representation)",
  "bbox": [
    -44.64,
    -177.25,
    -43.3,
    -175.54
  ],
  "proj4": "+proj=longlat +ellps=intl +towgs84=174.05,-25.49,112.57,0,0,-0.554,0.2263 +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 (4673, 'EPSG', 4673, '+proj=longlat +ellps=intl +towgs84=174.05,-25.49,112.57,0,0,-0.554,0.2263 +no_defs +type=crs', 'GEOGCS["Chatham Islands 1979",DATUM["Chatham_Islands_Datum_1979",SPHEROID["International 1924",6378388,297],TOWGS84[174.05,-25.49,112.57,0,0,-0.554,0.2263]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4673"]]');

MapServer

How to add a projection to MapServer? →

PROJECTION
  "+proj=longlat"
  "+ellps=intl"
  "+towgs84=174.05,-25.49,112.57,0,0,-0.554,0.2263"
  "+no_defs"
  "+type=crs"
END

GeoServer

How to add a projection to GeoServer? →

4673=GEOGCS["Chatham Islands 1979",DATUM["Chatham_Islands_Datum_1979",SPHEROID["International 1924",6378388,297],TOWGS84[174.05,-25.49,112.57,0,0,-0.554,0.2263]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4673"]]

Related Coordinate Systems

Available Transformations (2)

Transformation	Source → Target	Accuracy (m)
CI1979 to WGS 84 (1)	4673 → 4326	2
CI1979 to NZGD2000 (1)	4673 → 4167	2

Other CRS using Chatham Islands Datum 1979

Frequently Asked Questions

How do I add EPSG:4673 to GeoServer?

Add the following definition to your GeoServer configuration:

4673=GEOGCS["Chatham Islands 1979",DATUM["Chatham_Islands_Datum_1979",SPHEROID["International 1924",6378388,297],TOWGS84[174.05,-25.49,112.57,0,0,-0.554,0.2263]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4673"]]

Read the full GeoServer guide →

How do I add EPSG:4673 to PostGIS?

Add the following definition to your PostGIS configuration:

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (4673, 'EPSG', 4673, '+proj=longlat +ellps=intl +towgs84=174.05,-25.49,112.57,0,0,-0.554,0.2263 +no_defs +type=crs', 'GEOGCS["Chatham Islands 1979",DATUM["Chatham_Islands_Datum_1979",SPHEROID["International 1924",6378388,297],TOWGS84[174.05,-25.49,112.57,0,0,-0.554,0.2263]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4673"]]');

Read the full PostGIS guide →

How do I add EPSG:4673 to MapServer?

Add the following definition to your MapServer configuration:

PROJECTION
  "+proj=longlat"
  "+ellps=intl"
  "+towgs84=174.05,-25.49,112.57,0,0,-0.554,0.2263"
  "+no_defs"
  "+type=crs"
END

Read the full MapServer guide →

How do I use EPSG:4673 with Proj4js?

Add the following definition to your Proj4js configuration:

proj4.defs("EPSG:4673", "+proj=longlat +ellps=intl +towgs84=174.05,-25.49,112.57,0,0,-0.554,0.2263 +no_defs +type=crs");

Read the full Proj4js guide →