EPSG:9866

MRH21-IRF

Attributes

Unit: degree (supplier to define representation)

Geodetic CRS: MRH21-IRF

Datum: MRH21 Intermediate Reference Frame

Ellipsoid: GRS 1980

Prime meridian: Greenwich

Data source: EPSG

Information source: Network Rail.

Revision date: 2021-11-04

Scope: Engineering survey and topographic mapping for railway applications.

Remarks: Intermediate CRS created in 2021 to assist the emulation of the ETRS89 / MRH21 SnakeGrid projected CRS through transformation ETRS89 to MRH21-IRF (1) (code 9867) used in conjunction with the MRH21-TM map projection (code 9868).

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

Coordinate system: Ellipsoidal 2D CS. Axes: latitude, longitude. Orientations: north, east. UoM: degree

Covered area powered by MapTiler MapTiler logo
SimpleMap

Center coordinates
-1.81 52.3

WGS84 bounds:
-3.27 51.35
-0.36 53.26

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

Definition: OGC Well Known Text

GEOGCS["MRH21-IRF",
    DATUM["MRH21_Intermediate_Reference_Frame",
        SPHEROID["GRS 1980",6378137,298.257222101,
            AUTHORITY["EPSG","7019"]],
        AUTHORITY["EPSG","1314"]],
    PRIMEM["Greenwich",0,
        AUTHORITY["EPSG","8901"]],
    UNIT["degree",0.0174532925199433,
        AUTHORITY["EPSG","9122"]],
    AUTHORITY["EPSG","9866"]]

Definition: OGC Well Known Text 2 (2019)

GEOGCRS["MRH21-IRF",
    DATUM["MRH21 Intermediate Reference Frame",
        ELLIPSOID["GRS 1980",6378137,298.257222101,
            LENGTHUNIT["metre",1]]],
    PRIMEM["Greenwich",0,
        ANGLEUNIT["degree",0.0174532925199433]],
    CS[ellipsoidal,2],
        AXIS["geodetic latitude (Lat)",north,
            ORDER[1],
            ANGLEUNIT["degree",0.0174532925199433]],
        AXIS["geodetic longitude (Lon)",east,
            ORDER[2],
            ANGLEUNIT["degree",0.0174532925199433]],
    USAGE[
        SCOPE["Engineering survey and topographic mapping for railway applications."],
        AREA["United Kingdom (UK) - on or related to Midland Rail Hub, covering routes through Cardiff, Bristol, Gloucester, Derby, Birmingham, Leicester, and Lincoln."],
        BBOX[51.35,-3.27,53.26,-0.36]],
    ID["EPSG",9866]]

Definition: ESRI Well Known Text

GEOGCS["GCS_MRH21-IRF",
    DATUM["MRH21_Intermediate_Reference_Frame",
        SPHEROID["GRS_1980",6378137.0,298.257222101]],
    PRIMEM["Greenwich",0.0],
    UNIT["Degree",0.0174532925199433]]

Definition: PROJ.4

+proj=longlat +ellps=GRS80 +no_defs +type=crs

Definition: JavaScript (Proj4js) 

proj4.defs("EPSG:9866","+proj=longlat +ellps=GRS80 +no_defs +type=crs");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "GeographicCRS",
    "name": "MRH21-IRF",
    "datum": {
        "type": "GeodeticReferenceFrame",
        "name": "MRH21 Intermediate Reference Frame",
        "ellipsoid": {
            "name": "GRS 1980",
            "semi_major_axis": 6378137,
            "inverse_flattening": 298.257222101
        }
    },
    "coordinate_system": {
        "subtype": "ellipsoidal",
        "axis": [
            {
                "name": "Geodetic latitude",
                "abbreviation": "Lat",
                "direction": "north",
                "unit": "degree"
            },
            {
                "name": "Geodetic longitude",
                "abbreviation": "Lon",
                "direction": "east",
                "unit": "degree"
            }
        ]
    },
    "scope": "Engineering survey and topographic mapping for railway applications.",
    "area": "United Kingdom (UK) - on or related to Midland Rail Hub, covering routes through Cardiff, Bristol, Gloucester, Derby, Birmingham, Leicester, and Lincoln.",
    "bbox": {
        "south_latitude": 51.35,
        "west_longitude": -3.27,
        "north_latitude": 53.26,
        "east_longitude": -0.36
    },
    "id": {
        "authority": "EPSG",
        "code": 9866
    }
}

Definition: GeoServer

9866=GEOGCS["MRH21-IRF",DATUM["MRH21_Intermediate_Reference_Frame",SPHEROID["GRS 1980",6378137,298.257222101,AUTHORITY["EPSG","7019"]],AUTHORITY["EPSG","1314"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","9866"]]

Definition: MapServer - MAPfile

PROJECTION
	"proj=longlat"
	"ellps=GRS80"
	"no_defs"
	"type=crs"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=longlat +ellps=GRS80 +no_defs +type=crs">
	<Layer srs="+proj=longlat +ellps=GRS80 +no_defs +type=crs">
	</Layer>
</Map>

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 9866, 'EPSG', 9866, '+proj=longlat +ellps=GRS80 +no_defs +type=crs', 'GEOGCS["MRH21-IRF",DATUM["MRH21_Intermediate_Reference_Frame",SPHEROID["GRS 1980",6378137,298.257222101,AUTHORITY["EPSG","7019"]],AUTHORITY["EPSG","1314"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","9866"]]');