EPSG:9765

EWR3-TM

Attributes

Data source: EPSG

Information source: Network Rail.

Revision date: 2025-05-05

Scope: Engineering survey and topographic mapping for railway applications.

Remarks: In conjunction with transformation ETRS89 to EWR2-IRF (1) (code 9764), emulates the EWR2 Snake projection. In conjunction with transformation ETRS89 to EWR3-IRF (1) (code 10850), emulates the EWR3 Snake projection. In 2024 the EWR2 Grid (ETRS89 / EWR2 SnakeGrid) was extended eastwards as the EWR3 Grid (ETRS89 / EWR3 SnakeGrid). In the emulation of the Snake projection, the NTv2 file supporting the transformation is extended but this map projection is unchanged and applies to both EWR2 and EWR3.

Method: Transverse Mercator

Area of use: United Kingdom (UK) - on or related to the East West Rail (Phases 2 and 3) route from Oxford to Cambridge via Bicester, Bletchley and Bedford, including the route from Claydon Junction to Aylesbury and Princes Risborough.

Description: (0,)

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SimpleMap
United Kingdom (UK) - on or related to the East West Rail (Phases 2 and 3) route from Oxford to Cambridge via Bicester, Bletchley and Bedford, including the route from Claydon Junction to Aylesbury and Princes Risborough.

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Definition: OGC Well Known Text

PROJECTION["Transverse_Mercator"],
PARAMETER["latitude_of_origin",51.95],
PARAMETER["central_meridian",-0.9],
PARAMETER["scale_factor",1],
PARAMETER["false_easting",192519.9715],
PARAMETER["false_northing",146942.6806]

Definition: OGC Well Known Text 2 (2019)

CONVERSION["EWR3-TM",
    METHOD["Transverse Mercator",
        ID["EPSG",9807]],
    PARAMETER["Latitude of natural origin",51.95,
        ANGLEUNIT["degree",0.0174532925199433],
        ID["EPSG",8801]],
    PARAMETER["Longitude of natural origin",-0.9,
        ANGLEUNIT["degree",0.0174532925199433],
        ID["EPSG",8802]],
    PARAMETER["Scale factor at natural origin",1,
        SCALEUNIT["unity",1],
        ID["EPSG",8805]],
    PARAMETER["False easting",192519.9715,
        LENGTHUNIT["metre",1],
        ID["EPSG",8806]],
    PARAMETER["False northing",146942.6806,
        LENGTHUNIT["metre",1],
        ID["EPSG",8807]],
    ID["EPSG",9765]]

Definition: ESRI Well Known Text

PROJECTION["Transverse_Mercator"],
PARAMETER["False_Easting",192519.9715],
PARAMETER["False_Northing",146942.6806],
PARAMETER["Central_Meridian",-0.9],
PARAMETER["Scale_Factor",1.0],
PARAMETER["Latitude_Of_Origin",51.95]

Definition: PROJ.4

+proj=tmerc +lat_0=51.95 +lon_0=-0.9 +k=1 +x_0=192519.9715 +y_0=146942.6806

Definition: JavaScript (Proj4js) 

proj4.defs("EPSG:9765","+proj=tmerc +lat_0=51.95 +lon_0=-0.9 +k=1 +x_0=192519.9715 +y_0=146942.6806");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "Conversion",
    "name": "EWR3-TM",
    "method": {
        "name": "Transverse Mercator",
        "id": {
            "authority": "EPSG",
            "code": 9807
        }
    },
    "parameters": [
        {
            "name": "Latitude of natural origin",
            "value": 51.95,
            "unit": "degree",
            "id": {
                "authority": "EPSG",
                "code": 8801
            }
        },
        {
            "name": "Longitude of natural origin",
            "value": -0.9,
            "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": 192519.9715,
            "unit": "metre",
            "id": {
                "authority": "EPSG",
                "code": 8806
            }
        },
        {
            "name": "False northing",
            "value": 146942.6806,
            "unit": "metre",
            "id": {
                "authority": "EPSG",
                "code": 8807
            }
        }
    ],
    "id": {
        "authority": "EPSG",
        "code": 9765
    }
}

Definition: GeoServer

9765=PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",51.95],PARAMETER["central_meridian",-0.9],PARAMETER["scale_factor",1],PARAMETER["false_easting",192519.9715],PARAMETER["false_northing",146942.6806]

Definition: MapServer - MAPfile

PROJECTION
	"proj=tmerc"
	"lat_0=51.95"
	"lon_0=-0.9"
	"k=1"
	"x_0=192519.9715"
	"y_0=146942.6806"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=tmerc +lat_0=51.95 +lon_0=-0.9 +k=1 +x_0=192519.9715 +y_0=146942.6806">
	<Layer srs="+proj=tmerc +lat_0=51.95 +lon_0=-0.9 +k=1 +x_0=192519.9715 +y_0=146942.6806">
	</Layer>
</Map>

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 9765, 'EPSG', 9765, '+proj=tmerc +lat_0=51.95 +lon_0=-0.9 +k=1 +x_0=192519.9715 +y_0=146942.6806', 'PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",51.95],PARAMETER["central_meridian",-0.9],PARAMETER["scale_factor",1],PARAMETER["false_easting",192519.9715],PARAMETER["false_northing",146942.6806]');