EPSG:9868

MRH21-TM

Attributes

Data source: EPSG

Information source: Network Rail.

Revision date: 2021-11-04

Scope: Engineering survey and topographic mapping for railway applications.

Remarks: In conjunction with transformation ETRS89 to MHR21-IRF (1) (code 9867), emulates the MHR21 Snake projection.

Method: Transverse Mercator

Area of use: United Kingdom (UK) - on or related to Midland Rail Hub, covering routes through Cardiff, Bristol, Gloucester, Derby, Birmingham, Leicester, and Lincoln.

Description: (0,)

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Definition: OGC Well Known Text

PROJECTION["Transverse_Mercator"],
PARAMETER["latitude_of_origin",52.3],
PARAMETER["central_meridian",-1.8],
PARAMETER["scale_factor",1],
PARAMETER["false_easting",227286.9881],
PARAMETER["false_northing",265751.2874]

Definition: OGC Well Known Text 2 (2019)

CONVERSION["MRH21-TM",
    METHOD["Transverse Mercator",
        ID["EPSG",9807]],
    PARAMETER["Latitude of natural origin",52.3,
        ANGLEUNIT["degree",0.0174532925199433],
        ID["EPSG",8801]],
    PARAMETER["Longitude of natural origin",-1.8,
        ANGLEUNIT["degree",0.0174532925199433],
        ID["EPSG",8802]],
    PARAMETER["Scale factor at natural origin",1,
        SCALEUNIT["unity",1],
        ID["EPSG",8805]],
    PARAMETER["False easting",227286.9881,
        LENGTHUNIT["metre",1],
        ID["EPSG",8806]],
    PARAMETER["False northing",265751.2874,
        LENGTHUNIT["metre",1],
        ID["EPSG",8807]],
    ID["EPSG",9868]]

Definition: ESRI Well Known Text

PROJECTION["Transverse_Mercator"],
PARAMETER["False_Easting",227286.9881],
PARAMETER["False_Northing",265751.2874],
PARAMETER["Central_Meridian",-1.8],
PARAMETER["Scale_Factor",1.0],
PARAMETER["Latitude_Of_Origin",52.3]

Definition: PROJ.4

+proj=tmerc +lat_0=52.3 +lon_0=-1.8 +k=1 +x_0=227286.9881 +y_0=265751.2874

Definition: JavaScript (Proj4js)

proj4.defs("EPSG:9868","+proj=tmerc +lat_0=52.3 +lon_0=-1.8 +k=1 +x_0=227286.9881 +y_0=265751.2874");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.5/projjson.schema.json",
    "type": "Conversion",
    "name": "MRH21-TM",
    "method": {
        "name": "Transverse Mercator",
        "id": {
            "authority": "EPSG",
            "code": 9807
        }
    },
    "parameters": [
        {
            "name": "Latitude of natural origin",
            "value": 52.3,
            "unit": "degree",
            "id": {
                "authority": "EPSG",
                "code": 8801
            }
        },
        {
            "name": "Longitude of natural origin",
            "value": -1.8,
            "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": 227286.9881,
            "unit": "metre",
            "id": {
                "authority": "EPSG",
                "code": 8806
            }
        },
        {
            "name": "False northing",
            "value": 265751.2874,
            "unit": "metre",
            "id": {
                "authority": "EPSG",
                "code": 8807
            }
        }
    ],
    "id": {
        "authority": "EPSG",
        "code": 9868
    }
}

Definition: GeoServer

9868=PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",52.3],PARAMETER["central_meridian",-1.8],PARAMETER["scale_factor",1],PARAMETER["false_easting",227286.9881],PARAMETER["false_northing",265751.2874]

Definition: MapServer - MAPfile

PROJECTION
	"proj=tmerc"
	"lat_0=52.3"
	"lon_0=-1.8"
	"k=1"
	"x_0=227286.9881"
	"y_0=265751.2874"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=tmerc +lat_0=52.3 +lon_0=-1.8 +k=1 +x_0=227286.9881 +y_0=265751.2874">
	<Layer srs="+proj=tmerc +lat_0=52.3 +lon_0=-1.8 +k=1 +x_0=227286.9881 +y_0=265751.2874">
	</Layer>
</Map>

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 9868, 'EPSG', 9868, '+proj=tmerc +lat_0=52.3 +lon_0=-1.8 +k=1 +x_0=227286.9881 +y_0=265751.2874', 'PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",52.3],PARAMETER["central_meridian",-1.8],PARAMETER["scale_factor",1],PARAMETER["false_easting",227286.9881],PARAMETER["false_northing",265751.2874]');