EPSG:4611 — Hong Kong 1980

Geographic 2D · Hong Kong

Export Formats

OGC WKT

GEOGCS[
    "Hong Kong 1980",
    DATUM[
        "Hong_Kong_1980",
        SPHEROID["International 1924",6378388,297],
        TOWGS84[-162.619,-276.959,-161.764,-0.067753,2.243648,1.158828,-1.094246]
    ],
    PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],
    UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],
    AUTHORITY["EPSG","4611"]
]

WKT2

GEOGCRS[
    "Hong Kong 1980",
    DATUM[
        "Hong Kong 1980",
        ELLIPSOID[
            "International 1924",
            6378388,
            297,
            LENGTHUNIT["metre",1,ID["EPSG",9001]],
            ID["EPSG",7022]
        ],
        ID["EPSG",6611]
    ],
    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",4611]
]

PROJ.4

+proj=longlat +ellps=intl +towgs84=-162.619,-276.959,-161.764,-0.067753,2.243648,1.158828,-1.094246 +no_defs +type=crs

Proj4js

How to add a projection to Proj4js? →

proj4.defs("EPSG:4611", "+proj=longlat +ellps=intl +towgs84=-162.619,-276.959,-161.764,-0.067753,2.243648,1.158828,-1.094246 +no_defs +type=crs");

JSON

{
  "type": "CoordinateReferenceSystem",
  "code": 4611,
  "name": "Hong Kong 1980",
  "kind": "geographic 2D",
  "area": "Hong Kong",
  "unit": "degree (supplier to define representation)",
  "bbox": [
    22.13,
    113.76,
    22.58,
    114.51
  ],
  "proj4": "+proj=longlat +ellps=intl +towgs84=-162.619,-276.959,-161.764,-0.067753,2.243648,1.158828,-1.094246 +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 (4611, 'EPSG', 4611, '+proj=longlat +ellps=intl +towgs84=-162.619,-276.959,-161.764,-0.067753,2.243648,1.158828,-1.094246 +no_defs +type=crs', 'GEOGCS["Hong Kong 1980",DATUM["Hong_Kong_1980",SPHEROID["International 1924",6378388,297],TOWGS84[-162.619,-276.959,-161.764,-0.067753,2.243648,1.158828,-1.094246]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4611"]]');

MapServer

How to add a projection to MapServer? →

PROJECTION
  "+proj=longlat"
  "+ellps=intl"
  "+towgs84=-162.619,-276.959,-161.764,-0.067753,2.243648,1.158828,-1.094246"
  "+no_defs"
  "+type=crs"
END

GeoServer

How to add a projection to GeoServer? →

4611=GEOGCS["Hong Kong 1980",DATUM["Hong_Kong_1980",SPHEROID["International 1924",6378388,297],TOWGS84[-162.619,-276.959,-161.764,-0.067753,2.243648,1.158828,-1.094246]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4611"]]

Related Coordinate Systems

Available Transformations (3)

Transformation	Source → Target	Accuracy (m)
Hong Kong 1980 to WGS 84 (1)	4611 → 4326	1
Hong Kong 1980 to Hong Kong Geodetic CS (1)	4611 → 8427	1
Hong Kong 1980 to Hong Kong Geodetic CS (1) Deprecated	4611 → 8427	1

Other CRS for HK

Other CRS using Hong Kong 1980

Frequently Asked Questions

How do I add EPSG:4611 to GeoServer?

Add the following definition to your GeoServer configuration:

4611=GEOGCS["Hong Kong 1980",DATUM["Hong_Kong_1980",SPHEROID["International 1924",6378388,297],TOWGS84[-162.619,-276.959,-161.764,-0.067753,2.243648,1.158828,-1.094246]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4611"]]

Read the full GeoServer guide →

How do I add EPSG:4611 to PostGIS?

Add the following definition to your PostGIS configuration:

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (4611, 'EPSG', 4611, '+proj=longlat +ellps=intl +towgs84=-162.619,-276.959,-161.764,-0.067753,2.243648,1.158828,-1.094246 +no_defs +type=crs', 'GEOGCS["Hong Kong 1980",DATUM["Hong_Kong_1980",SPHEROID["International 1924",6378388,297],TOWGS84[-162.619,-276.959,-161.764,-0.067753,2.243648,1.158828,-1.094246]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4611"]]');

Read the full PostGIS guide →

How do I add EPSG:4611 to MapServer?

Add the following definition to your MapServer configuration:

PROJECTION
  "+proj=longlat"
  "+ellps=intl"
  "+towgs84=-162.619,-276.959,-161.764,-0.067753,2.243648,1.158828,-1.094246"
  "+no_defs"
  "+type=crs"
END

Read the full MapServer guide →

How do I use EPSG:4611 with Proj4js?

Add the following definition to your Proj4js configuration:

proj4.defs("EPSG:4611", "+proj=longlat +ellps=intl +towgs84=-162.619,-276.959,-161.764,-0.067753,2.243648,1.158828,-1.094246 +no_defs +type=crs");

Read the full Proj4js guide →