Astro DOS 71 / SHLG71

Available transformations

St Helena, Ascension and Tristan da Cunha , accuracy 44.0 m, code 15798 (default) [grid]
St Helena, Ascension and Tristan da Cunha , accuracy 1.0 m, code 7894 [grid]

Selected transformation

Method: Geocentric translations (geog2D domain)

Remarks: Derived at 1 satellite station.

Information source: DMA / NIMA / NGA TR8350.2 (3rd edition, Amendment 1, 3 January 2000)

Revision date: 2016-12-15

Attributes

Unit: metre

Geodetic CRS: Astro DOS 71

Datum: Astro DOS 71

Ellipsoid: International 1924

Prime meridian: Greenwich

Data source: OGP

Information source: St. Helena Government, Environment and Natural Resources Directorate (ENRD).

Revision date: 2016-11-25

Scope: Topographic mapping prior to 2016.

Remarks: Replaced by SHMG2015 (CRS code 7887) from 2015.

Method: Geocentric translations (geog2D domain)

Area of use: St Helena, Ascension and Tristan da Cunha - St Helena Island - onshore.

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

Covered area powered by MapTiler

St Helena, Ascension and Tristan da Cunha - St Helena Island - onshore.

Definition: OGP XML

<div class="syntax"><pre><?xml version="1.0" encoding="UTF-8"?> <gml:ProjectedCRS xmlns:epsg="urn:x-ogp:spec:schema-xsd:EPSG:1.0:dataset" xmlns:gml="http://www.opengis.net/gml/3.2" xmlns:xlink="http://www.w3.org/1999/xlink" gml:id="iogp-crs-7877"> <gml:metaDataProperty> <epsg:CommonMetaData> <epsg:type>projected</epsg:type> <epsg:alias alias="St. Helena 1971 / SHLG71" code="7252" codeSpace="urn:ogc:def:naming-system:EPSG::7301" /> <epsg:informationSource>St. Helena Government, Environment and Natural Resources Directorate (ENRD).</epsg:informationSource> <epsg:revisionDate>2016-11-25</epsg:revisionDate> <epsg:changes> <epsg:changeID xlink:href="urn:ogc:def:change-request:EPSG::2016.038" /> </epsg:changes> <epsg:show>true</epsg:show> <epsg:isDeprecated>false</epsg:isDeprecated> </epsg:CommonMetaData> </gml:metaDataProperty> <gml:identifier codeSpace="IOGP">urn:ogc:def:crs:EPSG::7877</gml:identifier> <gml:name>Astro DOS 71 / SHLG71</gml:name> <gml:remarks>Replaced by SHMG2015 (CRS code 7887) from 2015.</gml:remarks> <gml:domainOfValidity xlink:href="urn:ogc:def:area:EPSG::3183" /> <gml:scope>Topographic mapping prior to 2016.</gml:scope> <gml:conversion xlink:href="urn:ogc:def:coordinateOperation:EPSG::7875" /> <gml:baseGeodeticCRS xlink:href="urn:ogc:def:crs:EPSG::4710" /> <gml:cartesianCS xlink:href="urn:ogc:def:cs:EPSG::4400" /> </gml:ProjectedCRS> </pre></div>

<?xml version="1.0" encoding="UTF-8"?>
 <gml:ProjectedCRS xmlns:epsg="urn:x-ogp:spec:schema-xsd:EPSG:1.0:dataset" xmlns:gml="http://www.opengis.net/gml/3.2" xmlns:xlink="http://www.w3.org/1999/xlink" gml:id="iogp-crs-7877">
   <gml:metaDataProperty>
      <epsg:CommonMetaData>
         <epsg:type>projected</epsg:type>
         <epsg:alias alias="St. Helena 1971 / SHLG71" code="7252" codeSpace="urn:ogc:def:naming-system:EPSG::7301" />
         <epsg:informationSource>St. Helena Government, Environment and Natural Resources Directorate (ENRD).</epsg:informationSource>
         <epsg:revisionDate>2016-11-25</epsg:revisionDate>
         <epsg:changes>
            <epsg:changeID xlink:href="urn:ogc:def:change-request:EPSG::2016.038" />
         </epsg:changes>
         <epsg:show>true</epsg:show>
         <epsg:isDeprecated>false</epsg:isDeprecated>
      </epsg:CommonMetaData>
   </gml:metaDataProperty>
   <gml:identifier codeSpace="IOGP">urn:ogc:def:crs:EPSG::7877</gml:identifier>
   <gml:name>Astro DOS 71 / SHLG71</gml:name>
   <gml:remarks>Replaced by SHMG2015 (CRS code 7887) from 2015.</gml:remarks>
   <gml:domainOfValidity xlink:href="urn:ogc:def:area:EPSG::3183" />
   <gml:scope>Topographic mapping prior to 2016.</gml:scope>
   <gml:conversion xlink:href="urn:ogc:def:coordinateOperation:EPSG::7875" />
   <gml:baseGeodeticCRS xlink:href="urn:ogc:def:crs:EPSG::4710" />
   <gml:cartesianCS xlink:href="urn:ogc:def:cs:EPSG::4400" />
</gml:ProjectedCRS>

EPSG:7877