EPSG:10993

Xrail84

Attributes

Unit: degree (supplier to define representation)

Geodetic CRS: Xrail84

Datum: Xrail84

Ellipsoid: WGS 84

Prime meridian: Greenwich

Data source: EPSG

Information source: Transport for London, Topographic surveys and mapping Standard S1026, issue A2, March 2016.

Revision date: 2025-10-17

Scope: Horizontal component of 3D system.

Area of use: United Kingdom (UK) - Greater London and surrounding area.

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

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SimpleMap

Center coordinates
-0.27 51.55

WGS84 bounds:
-1.33 51.1
0.8 52.0

United Kingdom (UK) - Greater London and surrounding area.
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Definition: OGC Well Known Text

GEOGCS["Xrail84",
    DATUM["Xrail84",
        SPHEROID["WGS 84",6378137,298.257223563,
            AUTHORITY["EPSG","7030"]],
        AUTHORITY["EPSG","1408"]],
    PRIMEM["Greenwich",0,
        AUTHORITY["EPSG","8901"]],
    UNIT["degree",0.0174532925199433,
        AUTHORITY["EPSG","9122"]],
    AUTHORITY["EPSG","10993"]]

Definition: OGC Well Known Text 2 (2019)

GEOGCRS["Xrail84",
    DATUM["Xrail84",
        ELLIPSOID["WGS 84",6378137,298.257223563,
            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["Horizontal component of 3D system."],
        AREA["United Kingdom (UK) - Greater London and surrounding area."],
        BBOX[51.1,-1.33,52,0.8]],
    ID["EPSG",10993]]

Definition: ESRI Well Known Text

GEOGCS["GCS_Xrail84",
    DATUM["D_Xrail84",
        SPHEROID["WGS_1984",6378137.0,298.257223563]],
    PRIMEM["Greenwich",0.0],
    UNIT["Degree",0.0174532925199433]]

Definition: PROJ.4

+proj=longlat +ellps=WGS84 +no_defs +type=crs

Definition: JavaScript (Proj4js) 

proj4.defs("EPSG:10993","+proj=longlat +ellps=WGS84 +no_defs +type=crs");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "GeographicCRS",
    "name": "Xrail84",
    "datum": {
        "type": "GeodeticReferenceFrame",
        "name": "Xrail84",
        "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"
            }
        ]
    },
    "scope": "Horizontal component of 3D system.",
    "area": "United Kingdom (UK) - Greater London and surrounding area.",
    "bbox": {
        "south_latitude": 51.1,
        "west_longitude": -1.33,
        "north_latitude": 52,
        "east_longitude": 0.8
    },
    "id": {
        "authority": "EPSG",
        "code": 10993
    }
}

Definition: GeoServer

10993=GEOGCS["Xrail84",DATUM["Xrail84",SPHEROID["WGS 84",6378137,298.257223563,AUTHORITY["EPSG","7030"]],AUTHORITY["EPSG","1408"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","10993"]]

Definition: MapServer - MAPfile

PROJECTION
	"proj=longlat"
	"ellps=WGS84"
	"no_defs"
	"type=crs"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=longlat +ellps=WGS84 +no_defs +type=crs">
	<Layer srs="+proj=longlat +ellps=WGS84 +no_defs +type=crs">
	</Layer>
</Map>

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 10993, 'EPSG', 10993, '+proj=longlat +ellps=WGS84 +no_defs +type=crs', 'GEOGCS["Xrail84",DATUM["Xrail84",SPHEROID["WGS 84",6378137,298.257223563,AUTHORITY["EPSG","7030"]],AUTHORITY["EPSG","1408"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","10993"]]');