Engineering survey, topographic mapping.
Replaces use of Indian 1960 / UTM zone 48 after 1988. Replaced by VN-2000 / UTM zone 48N (CRS code 3405).
Vietnam - onshore west of 108°E.
Cartesian 2D CS. Axes: northing, easting (X,Y). Orientations: north, east. UoM: m.
18668252.44 1110181.94
18553499.31 998667.41
18783714.97 1222170.03
105.49 9.03
107.58 11.04
Definition: OGC Well Known Text
PROJCS["Hanoi 1972 / Gauss-Kruger zone 18", GEOGCS["Hanoi 1972", DATUM["Hanoi_1972", SPHEROID["Krassowsky 1940",6378245,298.3], TOWGS84[-17.51,-108.32,-62.39,0,0,0,0]], PRIMEM["Greenwich",0, AUTHORITY["EPSG","8901"]], UNIT["degree",0.0174532925199433, AUTHORITY["EPSG","9122"]], AUTHORITY["EPSG","4147"]], PROJECTION["Transverse_Mercator"], PARAMETER["latitude_of_origin",0], PARAMETER["central_meridian",105], PARAMETER["scale_factor",1], PARAMETER["false_easting",18500000], PARAMETER["false_northing",0], UNIT["metre",1, AUTHORITY["EPSG","9001"]], AUTHORITY["EPSG","2044"]]
Definition: OGC Well Known Text 2 (2019)
PROJCRS["Hanoi 1972 / Gauss-Kruger zone 18", BASEGEOGCRS["Hanoi 1972", DATUM["Hanoi 1972", ELLIPSOID["Krassowsky 1940",6378245,298.3, LENGTHUNIT["metre",1]]], PRIMEM["Greenwich",0, ANGLEUNIT["degree",0.0174532925199433]], ID["EPSG",4147]], CONVERSION["6-degree Gauss-Kruger zone 18", METHOD["Transverse Mercator", ID["EPSG",9807]], PARAMETER["Latitude of natural origin",0, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8801]], PARAMETER["Longitude of natural origin",105, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8802]], PARAMETER["Scale factor at natural origin",1, SCALEUNIT["unity",1], ID["EPSG",8805]], PARAMETER["False easting",18500000, 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["Engineering survey, topographic mapping."], AREA["Vietnam - onshore west of 108°E."], BBOX[8.33,102.14,23.4,108]], ID["EPSG",2044]]
Definition: ESRI Well Known Text
PROJCS["Hanoi_1972_GK_Zone_18", GEOGCS["GCS_Hanoi_1972", DATUM["D_Hanoi_1972", SPHEROID["Krasovsky_1940",6378245.0,298.3]], PRIMEM["Greenwich",0.0], UNIT["Degree",0.0174532925199433]], PROJECTION["Gauss_Kruger"], PARAMETER["False_Easting",18500000.0], PARAMETER["False_Northing",0.0], PARAMETER["Central_Meridian",105.0], 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": "Hanoi 1972 / Gauss-Kruger zone 18", "base_crs": { "name": "Hanoi 1972", "datum": { "type": "GeodeticReferenceFrame", "name": "Hanoi 1972", "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": 4147 } }, "conversion": { "name": "6-degree Gauss-Kruger zone 18", "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": 105, "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": 18500000, "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": "Engineering survey, topographic mapping.", "area": "Vietnam - onshore west of 108°E.", "bbox": { "south_latitude": 8.33, "west_longitude": 102.14, "north_latitude": 23.4, "east_longitude": 108 }, "id": { "authority": "EPSG", "code": 2044 } }
Definition: GeoServer
2044=PROJCS["Hanoi 1972 / Gauss-Kruger zone 18",GEOGCS["Hanoi 1972",DATUM["Hanoi_1972",SPHEROID["Krassowsky 1940",6378245,298.3],TOWGS84[-17.51,-108.32,-62.39,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4147"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",105],PARAMETER["scale_factor",1],PARAMETER["false_easting",18500000],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","2044"]]
Definition: Mapnik
<?xml version="1.0" encoding="utf-8"?> <Map srs="+proj=tmerc +lat_0=0 +lon_0=105 +k=1 +x_0=18500000 +y_0=0 +ellps=krass +towgs84=-17.51,-108.32,-62.39,0,0,0,0 +units=m +no_defs +type=crs"> <Layer srs="+proj=tmerc +lat_0=0 +lon_0=105 +k=1 +x_0=18500000 +y_0=0 +ellps=krass +towgs84=-17.51,-108.32,-62.39,0,0,0,0 +units=m +no_defs +type=crs"> </Layer> </Map>
Definition: SQL (PostGIS)
INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 2044, 'EPSG', 2044, '+proj=tmerc +lat_0=0 +lon_0=105 +k=1 +x_0=18500000 +y_0=0 +ellps=krass +towgs84=-17.51,-108.32,-62.39,0,0,0,0 +units=m +no_defs +type=crs', 'PROJCS["Hanoi 1972 / Gauss-Kruger zone 18",GEOGCS["Hanoi 1972",DATUM["Hanoi_1972",SPHEROID["Krassowsky 1940",6378245,298.3],TOWGS84[-17.51,-108.32,-62.39,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4147"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",105],PARAMETER["scale_factor",1],PARAMETER["false_easting",18500000],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","2044"]]');