EPSG:6958 DEPRECATED

VN-2000 / TM-3 zone 491

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Available transformations
to EPSG:4326
No other targets exist for this CRS

Selected transformation

Method: Coordinate Frame rotation (geog2D domain)

Remarks:

Information source: Department of Survey and Mapping

Revision date: 2020-03-14

Attributes

Unit: metre

Geodetic CRS: VN-2000

Datum: Vietnam 2000

Ellipsoid: WGS 84

Prime meridian: Greenwich

Data source: EPSG

Information source: Department of Survey and Mapping (DoSM).

Revision date: 2014-10-23

Scope: Engineering survey, topographic mapping (large scale).

Remarks: For Da Nang municipality see VN-2000 / TM-3 Da Nang zone, CRS code 6959.

Area of use: Vietnam - onshore east of 106°30'E.

Coordinate system: Cartesian 2D CS. Axes: easting, northing (E,N). Orientations: east, north. UoM: m.

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Center coordinates
-232102.46 2255840.49

Projected bounds:
-646713.87 1421173.14
168342.01 3100896.63

WGS84 bounds:
102.14 8.33
109.53 23.4

Vietnam - onshore.
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Definition: OGC Well Known Text

PROJCS["VN-2000 / TM-3 zone 491",
    GEOGCS["VN-2000",
        DATUM["Vietnam_2000",
            SPHEROID["WGS 84",6378137,298.257223563],
            TOWGS84[-191.90441429,-39.30318279,-111.45032835,-0.00928836,0.01975479,-0.00427372,0.252906278]],
        PRIMEM["Greenwich",0,
            AUTHORITY["EPSG","8901"]],
        UNIT["degree",0.0174532925199433,
            AUTHORITY["EPSG","9122"]],
        AUTHORITY["EPSG","4756"]],
    PROJECTION["Transverse_Mercator"],
    PARAMETER["latitude_of_origin",0],
    PARAMETER["central_meridian",108],
    PARAMETER["scale_factor",0.9999],
    PARAMETER["false_easting",0],
    PARAMETER["false_northing",500000],
    UNIT["metre",1,
        AUTHORITY["EPSG","9001"]],
    AXIS["Easting",EAST],
    AXIS["Northing",NORTH],
    AUTHORITY["EPSG","6958"]]

Definition: OGC Well Known Text 2 (2019)

PROJCRS["VN-2000 / TM-3 zone 491",
    BASEGEOGCRS["VN-2000",
        DATUM["Vietnam 2000",
            ELLIPSOID["WGS 84",6378137,298.257223563,
                LENGTHUNIT["metre",1]]],
        PRIMEM["Greenwich",0,
            ANGLEUNIT["degree",0.0174532925199433]],
        ID["EPSG",4756]],
    CONVERSION["Vietnam TM-3 zone 491",
        METHOD["Transverse Mercator",
            ID["EPSG",9807]],
        PARAMETER["Latitude of natural origin",0,
            ANGLEUNIT["degree",0.0174532925199433],
            ID["EPSG",8801]],
        PARAMETER["Longitude of natural origin",108,
            ANGLEUNIT["degree",0.0174532925199433],
            ID["EPSG",8802]],
        PARAMETER["Scale factor at natural origin",0.9999,
            SCALEUNIT["unity",1],
            ID["EPSG",8805]],
        PARAMETER["False easting",0,
            LENGTHUNIT["metre",1],
            ID["EPSG",8806]],
        PARAMETER["False northing",500000,
            LENGTHUNIT["metre",1],
            ID["EPSG",8807]]],
    CS[Cartesian,2],
        AXIS["(E)",east,
            ORDER[1],
            LENGTHUNIT["metre",1]],
        AXIS["(N)",north,
            ORDER[2],
            LENGTHUNIT["metre",1]],
    USAGE[
        SCOPE["Engineering survey, topographic mapping (large scale)."],
        AREA["Vietnam - onshore east of 106°30'E."],
        BBOX[8.57,106.5,22.95,109.53]],
    ID["EPSG",6958]]

Definition: ESRI Well Known Text

PROJCS["VN_2000_TM-3_zone_491",
    GEOGCS["GCS_VN_2000",
        DATUM["D_Vietnam_2000",
            SPHEROID["WGS_1984",6378137.0,298.257223563]],
        PRIMEM["Greenwich",0.0],
        UNIT["Degree",0.0174532925199433]],
    PROJECTION["Transverse_Mercator"],
    PARAMETER["False_Easting",0.0],
    PARAMETER["False_Northing",500000.0],
    PARAMETER["Central_Meridian",108.0],
    PARAMETER["Scale_Factor",0.9999],
    PARAMETER["Latitude_Of_Origin",0.0],
    UNIT["Meter",1.0]]

Definition: PROJ.4

+proj=tmerc +lat_0=0 +lon_0=108 +k=0.9999 +x_0=0 +y_0=500000 +ellps=WGS84 +towgs84=-191.90441429,-39.30318279,-111.45032835,-0.00928836,0.01975479,-0.00427372,0.252906278 +units=m +no_defs +type=crs

Definition: JavaScript (Proj4js) 

proj4.defs("EPSG:6958","+proj=tmerc +lat_0=0 +lon_0=108 +k=0.9999 +x_0=0 +y_0=500000 +ellps=WGS84 +towgs84=-191.90441429,-39.30318279,-111.45032835,-0.00928836,0.01975479,-0.00427372,0.252906278 +units=m +no_defs +type=crs");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "ProjectedCRS",
    "name": "VN-2000 / TM-3 zone 491",
    "base_crs": {
        "name": "VN-2000",
        "datum": {
            "type": "GeodeticReferenceFrame",
            "name": "Vietnam 2000",
            "ellipsoid": {
                "name": "WGS 84",
                "semi_major_axis": 6378137,
                "inverse_flattening": 298.257223563
            }
        },
        "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": 4756
        }
    },
    "conversion": {
        "name": "Vietnam TM-3 zone 491",
        "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": 108,
                "unit": "degree",
                "id": {
                    "authority": "EPSG",
                    "code": 8802
                }
            },
            {
                "name": "Scale factor at natural origin",
                "value": 0.9999,
                "unit": "unity",
                "id": {
                    "authority": "EPSG",
                    "code": 8805
                }
            },
            {
                "name": "False easting",
                "value": 0,
                "unit": "metre",
                "id": {
                    "authority": "EPSG",
                    "code": 8806
                }
            },
            {
                "name": "False northing",
                "value": 500000,
                "unit": "metre",
                "id": {
                    "authority": "EPSG",
                    "code": 8807
                }
            }
        ]
    },
    "coordinate_system": {
        "subtype": "Cartesian",
        "axis": [
            {
                "name": "Easting",
                "abbreviation": "E",
                "direction": "east",
                "unit": "metre"
            },
            {
                "name": "Northing",
                "abbreviation": "N",
                "direction": "north",
                "unit": "metre"
            }
        ]
    },
    "scope": "Engineering survey, topographic mapping (large scale).",
    "area": "Vietnam - onshore east of 106°30'E.",
    "bbox": {
        "south_latitude": 8.57,
        "west_longitude": 106.5,
        "north_latitude": 22.95,
        "east_longitude": 109.53
    },
    "id": {
        "authority": "EPSG",
        "code": 6958
    }
}

Definition: GeoServer

6958=PROJCS["VN-2000 / TM-3 zone 491",GEOGCS["VN-2000",DATUM["Vietnam_2000",SPHEROID["WGS 84",6378137,298.257223563],TOWGS84[-191.90441429,-39.30318279,-111.45032835,-0.00928836,0.01975479,-0.00427372,0.252906278]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4756"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",108],PARAMETER["scale_factor",0.9999],PARAMETER["false_easting",0],PARAMETER["false_northing",500000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","6958"]]

Definition: MapServer - MAPfile

PROJECTION
	"proj=tmerc"
	"lat_0=0"
	"lon_0=108"
	"k=0.9999"
	"x_0=0"
	"y_0=500000"
	"ellps=WGS84"
	"towgs84=-191.90441429,-39.30318279,-111.45032835,-0.00928836,0.01975479,-0.00427372,0.252906278"
	"units=m"
	"no_defs"
	"type=crs"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=tmerc +lat_0=0 +lon_0=108 +k=0.9999 +x_0=0 +y_0=500000 +ellps=WGS84 +towgs84=-191.90441429,-39.30318279,-111.45032835,-0.00928836,0.01975479,-0.00427372,0.252906278 +units=m +no_defs +type=crs">
	<Layer srs="+proj=tmerc +lat_0=0 +lon_0=108 +k=0.9999 +x_0=0 +y_0=500000 +ellps=WGS84 +towgs84=-191.90441429,-39.30318279,-111.45032835,-0.00928836,0.01975479,-0.00427372,0.252906278 +units=m +no_defs +type=crs">
	</Layer>
</Map>

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 6958, 'EPSG', 6958, '+proj=tmerc +lat_0=0 +lon_0=108 +k=0.9999 +x_0=0 +y_0=500000 +ellps=WGS84 +towgs84=-191.90441429,-39.30318279,-111.45032835,-0.00928836,0.01975479,-0.00427372,0.252906278 +units=m +no_defs +type=crs', 'PROJCS["VN-2000 / TM-3 zone 491",GEOGCS["VN-2000",DATUM["Vietnam_2000",SPHEROID["WGS 84",6378137,298.257223563],TOWGS84[-191.90441429,-39.30318279,-111.45032835,-0.00928836,0.01975479,-0.00427372,0.252906278]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4756"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",108],PARAMETER["scale_factor",0.9999],PARAMETER["false_easting",0],PARAMETER["false_northing",500000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","6958"]]');