EPSG:CODE

EPSG:8425 — Hong Kong Geodetic CS

Geocentric · Hong Kong

Export Formats

OGC WKT
GEOCCS[
    "Hong Kong Geodetic CS",
    DATUM[
        "Hong_Kong_Geodetic",
        SPHEROID["GRS 1980",6378137,298.257222101,AUTHORITY["EPSG","7019"]],
        AUTHORITY["EPSG","1209"]
    ],
    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","8425"]
]

Other CRS for HK

Other CRS using Hong Kong Geodetic

Frequently Asked Questions

How do I add EPSG:8425 to GeoServer?

Add the following definition to your GeoServer configuration: 

8425=GEOCCS["Hong Kong Geodetic CS",DATUM["Hong_Kong_Geodetic",SPHEROID["GRS 1980",6378137,298.257222101,AUTHORITY["EPSG","7019"]],AUTHORITY["EPSG","1209"]],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","8425"]]
Read the full GeoServer guide →

How do I add EPSG:8425 to PostGIS?

Add the following definition to your PostGIS configuration: 

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (8425, 'EPSG', 8425, '+proj=geocent +ellps=GRS80 +units=m +no_defs +type=crs', 'GEOCCS["Hong Kong Geodetic CS",DATUM["Hong_Kong_Geodetic",SPHEROID["GRS 1980",6378137,298.257222101,AUTHORITY["EPSG","7019"]],AUTHORITY["EPSG","1209"]],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","8425"]]');
Read the full PostGIS guide →

How do I add EPSG:8425 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:8425 with Proj4js?

Add the following definition to your Proj4js configuration: 

proj4.defs("EPSG:8425", "+proj=geocent +ellps=GRS80 +units=m +no_defs +type=crs");
Read the full Proj4js guide →