Cadastre, engineering survey, topographic mapping (large scale).
Truncated form of Beijing 1954 / 3-degree Gauss-Kruger zone 45 (code 2421). Replaced by Xian 1980 / 3-degree Gauss-Kruger CM 135E (code 2390).
Cartesian 2D CS. Axes: northing, easting (X,Y). Orientations: north, east. UoM: m.
-1879832.33 4441881.79
-2088963.21 4174250.75
-1677658.57 4711662.24
107.0 35.0
110.01 39.0
Definition: OGC Well Known Text
PROJCS["Beijing 1954 / 3-degree Gauss-Kruger CM 135E", GEOGCS["Beijing 1954", DATUM["Beijing_1954", SPHEROID["Krassowsky 1940",6378245,298.3], TOWGS84[12.646,-155.176,-80.863,0,0,0,0]], PRIMEM["Greenwich",0, AUTHORITY["EPSG","8901"]], UNIT["degree",0.0174532925199433, AUTHORITY["EPSG","9122"]], AUTHORITY["EPSG","4214"]], PROJECTION["Transverse_Mercator"], PARAMETER["latitude_of_origin",0], PARAMETER["central_meridian",135], PARAMETER["scale_factor",1], PARAMETER["false_easting",500000], PARAMETER["false_northing",0], UNIT["metre",1, AUTHORITY["EPSG","9001"]], AUTHORITY["EPSG","2442"]]
Definition: OGC Well Known Text 2 (2019)
PROJCRS["Beijing 1954 / 3-degree Gauss-Kruger CM 135E", BASEGEOGCRS["Beijing 1954", DATUM["Beijing 1954", ELLIPSOID["Krassowsky 1940",6378245,298.3, LENGTHUNIT["metre",1]]], PRIMEM["Greenwich",0, ANGLEUNIT["degree",0.0174532925199433]], ID["EPSG",4214]], CONVERSION["Gauss-Kruger CM 135E", METHOD["Transverse Mercator", ID["EPSG",9807]], PARAMETER["Latitude of natural origin",0, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8801]], PARAMETER["Longitude of natural origin",135, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8802]], PARAMETER["Scale factor at natural origin",1, SCALEUNIT["unity",1], ID["EPSG",8805]], PARAMETER["False easting",500000, LENGTHUNIT["metre",1], ID["EPSG",8806]], PARAMETER["False northing",0, LENGTHUNIT["metre",1], ID["EPSG",8807]]], CS[Cartesian,2], AXIS["northing (X)",north, ORDER[1], LENGTHUNIT["metre",1]], AXIS["easting (Y)",east, ORDER[2], LENGTHUNIT["metre",1]], USAGE[ SCOPE["Cadastre, engineering survey, topographic mapping (large scale)."], AREA["China - east of 133°30'E."], BBOX[45.85,133.5,48.4,134.77]], ID["EPSG",2442]]
Definition: ESRI Well Known Text
PROJCS["Beijing_1954_3_Degree_GK_CM_135E", GEOGCS["GCS_Beijing_1954", DATUM["D_Beijing_1954", SPHEROID["Krasovsky_1940",6378245.0,298.3]], PRIMEM["Greenwich",0.0], UNIT["Degree",0.0174532925199433]], PROJECTION["Gauss_Kruger"], PARAMETER["False_Easting",500000.0], PARAMETER["False_Northing",0.0], PARAMETER["Central_Meridian",135.0], PARAMETER["Scale_Factor",1.0], PARAMETER["Latitude_Of_Origin",0.0], UNIT["Meter",1.0]]
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "ProjectedCRS", "name": "Beijing 1954 / 3-degree Gauss-Kruger CM 135E", "base_crs": { "name": "Beijing 1954", "datum": { "type": "GeodeticReferenceFrame", "name": "Beijing 1954", "ellipsoid": { "name": "Krassowsky 1940", "semi_major_axis": 6378245, "inverse_flattening": 298.3 } }, "coordinate_system": { "subtype": "ellipsoidal", "axis": [ { "name": "Geodetic latitude", "abbreviation": "Lat", "direction": "north", "unit": "degree" }, { "name": "Geodetic longitude", "abbreviation": "Lon", "direction": "east", "unit": "degree" } ] }, "id": { "authority": "EPSG", "code": 4214 } }, "conversion": { "name": "Gauss-Kruger CM 135E", "method": { "name": "Transverse Mercator", "id": { "authority": "EPSG", "code": 9807 } }, "parameters": [ { "name": "Latitude of natural origin", "value": 0, "unit": "degree", "id": { "authority": "EPSG", "code": 8801 } }, { "name": "Longitude of natural origin", "value": 135, "unit": "degree", "id": { "authority": "EPSG", "code": 8802 } }, { "name": "Scale factor at natural origin", "value": 1, "unit": "unity", "id": { "authority": "EPSG", "code": 8805 } }, { "name": "False easting", "value": 500000, "unit": "metre", "id": { "authority": "EPSG", "code": 8806 } }, { "name": "False northing", "value": 0, "unit": "metre", "id": { "authority": "EPSG", "code": 8807 } } ] }, "coordinate_system": { "subtype": "Cartesian", "axis": [ { "name": "Northing", "abbreviation": "X", "direction": "north", "unit": "metre" }, { "name": "Easting", "abbreviation": "Y", "direction": "east", "unit": "metre" } ] }, "scope": "Cadastre, engineering survey, topographic mapping (large scale).", "area": "China - east of 133°30'E.", "bbox": { "south_latitude": 45.85, "west_longitude": 133.5, "north_latitude": 48.4, "east_longitude": 134.77 }, "id": { "authority": "EPSG", "code": 2442 } }
Definition: GeoServer
2442=PROJCS["Beijing 1954 / 3-degree Gauss-Kruger CM 135E",GEOGCS["Beijing 1954",DATUM["Beijing_1954",SPHEROID["Krassowsky 1940",6378245,298.3],TOWGS84[12.646,-155.176,-80.863,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4214"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",135],PARAMETER["scale_factor",1],PARAMETER["false_easting",500000],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","2442"]]
Definition: Mapnik
<?xml version="1.0" encoding="utf-8"?> <Map srs="+proj=tmerc +lat_0=0 +lon_0=135 +k=1 +x_0=500000 +y_0=0 +ellps=krass +towgs84=12.646,-155.176,-80.863,0,0,0,0 +units=m +no_defs +type=crs"> <Layer srs="+proj=tmerc +lat_0=0 +lon_0=135 +k=1 +x_0=500000 +y_0=0 +ellps=krass +towgs84=12.646,-155.176,-80.863,0,0,0,0 +units=m +no_defs +type=crs"> </Layer> </Map>
Definition: SQL (PostGIS)
INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 2442, 'EPSG', 2442, '+proj=tmerc +lat_0=0 +lon_0=135 +k=1 +x_0=500000 +y_0=0 +ellps=krass +towgs84=12.646,-155.176,-80.863,0,0,0,0 +units=m +no_defs +type=crs', 'PROJCS["Beijing 1954 / 3-degree Gauss-Kruger CM 135E",GEOGCS["Beijing 1954",DATUM["Beijing_1954",SPHEROID["Krassowsky 1940",6378245,298.3],TOWGS84[12.646,-155.176,-80.863,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4214"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",135],PARAMETER["scale_factor",1],PARAMETER["false_easting",500000],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","2442"]]');