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Geodetic CRS: Accra
Datum: Accra
Ellipsoid: War Office
Prime meridian: Greenwich
Data source: EPSG
Information source: OGP
Revision date: 2020-03-14
Scope: Oil and gas exploration and production.
Remarks: Can be implemented as a position vector tfm dX=-171.16 dY=17.29 dZ=325.21m, rX=rY=0 rZ=0.814", dS=-0.38 ppm. See tfm code 15495. Found in use within oil industry erroneously concatenated as dX=-171.16 dY=17.29 dZ=327.81m, rX=rY0 rZ=0.554", dS=0.2263 ppm.
Area of use: Ghana - offshore.
Description: (0,)
Definition: OGC Well Known Text 2 (2019)
CONCATENATEDOPERATION["Accra to WGS 84 (2)", VERSION["EPSG-Gha"], SOURCECRS[ GEOGCRS["Accra", DATUM["Accra", ELLIPSOID["War Office",6378300,296, 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]], ID["EPSG",4168]]], TARGETCRS[ GEOGCRS["WGS 84", ENSEMBLE["World Geodetic System 1984 ensemble", MEMBER["World Geodetic System 1984 (Transit)"], MEMBER["World Geodetic System 1984 (G730)"], MEMBER["World Geodetic System 1984 (G873)"], MEMBER["World Geodetic System 1984 (G1150)"], MEMBER["World Geodetic System 1984 (G1674)"], MEMBER["World Geodetic System 1984 (G1762)"], MEMBER["World Geodetic System 1984 (G2139)"], ELLIPSOID["WGS 84",6378137,298.257223563, LENGTHUNIT["metre",1]], ENSEMBLEACCURACY[2.0]], 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]], ID["EPSG",4326]]], STEP[ COORDINATEOPERATION["Accra to WGS 72BE (1)", VERSION["GSI-Gha"], SOURCECRS[ GEOGCRS["Accra", DATUM["Accra", ELLIPSOID["War Office",6378300,296, 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]], ID["EPSG",4168]]], TARGETCRS[ GEOGCRS["WGS 72BE", DYNAMIC[ FRAMEEPOCH[1972]], DATUM["WGS 72 Transit Broadcast Ephemeris", ELLIPSOID["WGS 72",6378135,298.26, 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]], ID["EPSG",4324]]], METHOD["Geocentric translations (geog2D domain)", ID["EPSG",9603]], PARAMETER["X-axis translation",-171.16, LENGTHUNIT["metre",1], ID["EPSG",8605]], PARAMETER["Y-axis translation",17.29, LENGTHUNIT["metre",1], ID["EPSG",8606]], PARAMETER["Z-axis translation",323.31, LENGTHUNIT["metre",1], ID["EPSG",8607]], OPERATIONACCURACY[25.0], ID["EPSG",1570], REMARK["Derived be single point Transit observation at several locations."]]], STEP[ COORDINATEOPERATION["WGS 72BE to WGS 84 (1)", VERSION["DMA"], SOURCECRS[ GEOGCRS["WGS 72BE", DYNAMIC[ FRAMEEPOCH[1972]], DATUM["WGS 72 Transit Broadcast Ephemeris", ELLIPSOID["WGS 72",6378135,298.26, 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]], ID["EPSG",4324]]], TARGETCRS[ GEOGCRS["WGS 84", ENSEMBLE["World Geodetic System 1984 ensemble", MEMBER["World Geodetic System 1984 (Transit)"], MEMBER["World Geodetic System 1984 (G730)"], MEMBER["World Geodetic System 1984 (G873)"], MEMBER["World Geodetic System 1984 (G1150)"], MEMBER["World Geodetic System 1984 (G1674)"], MEMBER["World Geodetic System 1984 (G1762)"], MEMBER["World Geodetic System 1984 (G2139)"], ELLIPSOID["WGS 84",6378137,298.257223563, LENGTHUNIT["metre",1]], ENSEMBLEACCURACY[2.0]], 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]], ID["EPSG",4326]]], METHOD["Position Vector transformation (geog2D domain)", ID["EPSG",9606]], PARAMETER["X-axis translation",0, LENGTHUNIT["metre",1], ID["EPSG",8605]], PARAMETER["Y-axis translation",0, LENGTHUNIT["metre",1], ID["EPSG",8606]], PARAMETER["Z-axis translation",1.9, LENGTHUNIT["metre",1], ID["EPSG",8607]], PARAMETER["X-axis rotation",0, ANGLEUNIT["arc-second",4.84813681109536E-06], ID["EPSG",8608]], PARAMETER["Y-axis rotation",0, ANGLEUNIT["arc-second",4.84813681109536E-06], ID["EPSG",8609]], PARAMETER["Z-axis rotation",0.814, ANGLEUNIT["arc-second",4.84813681109536E-06], ID["EPSG",8610]], PARAMETER["Scale difference",-0.38, SCALEUNIT["parts per million",1E-06], ID["EPSG",8611]], OPERATIONACCURACY[2.0], ID["EPSG",1240]]], OPERATIONACCURACY[26.0], USAGE[ SCOPE["Oil and gas exploration and production."], AREA["Ghana - offshore."], BBOX[1.4,-3.79,6.06,2.1]], ID["EPSG",8571], REMARK["Can be implemented as a position vector tfm dX=-171.16 dY=17.29 dZ=325.21m, rX=rY=0 rZ=0.814"", dS=-0.38 ppm. See tfm code 15495. Found in use within oil industry erroneously concatenated as dX=-171.16 dY=17.29 dZ=327.81m, rX=rY0 rZ=0.554"", dS=0.2263 ppm."]]
Definition: PROJ.4
+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +inv +proj=longlat +a=6378300 +rf=296 +step +proj=push +v_3 +step +proj=cart +a=6378300 +rf=296 +step +proj=helmert +x=-171.16 +y=17.29 +z=323.31 +step +proj=helmert +x=0 +y=0 +z=1.9 +rx=0 +ry=0 +rz=0.814 +s=-0.38 +convention=position_vector +step +inv +proj=cart +ellps=WGS84 +step +proj=pop +v_3 +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1
Definition: JavaScript (Proj4js)
proj4.defs("EPSG:8571","+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +inv +proj=longlat +a=6378300 +rf=296 +step +proj=push +v_3 +step +proj=cart +a=6378300 +rf=296 +step +proj=helmert +x=-171.16 +y=17.29 +z=323.31 +step +proj=helmert +x=0 +y=0 +z=1.9 +rx=0 +ry=0 +rz=0.814 +s=-0.38 +convention=position_vector +step +inv +proj=cart +ellps=WGS84 +step +proj=pop +v_3 +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1");
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "ConcatenatedOperation", "name": "Accra to WGS 84 (2)", "source_crs": { "type": "GeographicCRS", "name": "Accra", "datum": { "type": "GeodeticReferenceFrame", "name": "Accra", "ellipsoid": { "name": "War Office", "semi_major_axis": 6378300, "inverse_flattening": 296 } }, "coordinate_system": { "subtype": "ellipsoidal", "axis": [ { "name": "Geodetic latitude", "abbreviation": "Lat", "direction": "north", "unit": "degree" }, { "name": "Geodetic longitude", "abbreviation": "Lon", "direction": "east", "unit": "degree" } ] }, "id": { "authority": "EPSG", "code": 4168 } }, "target_crs": { "type": "GeographicCRS", "name": "WGS 84", "datum_ensemble": { "name": "World Geodetic System 1984 ensemble", "members": [ { "name": "World Geodetic System 1984 (Transit)", "id": { "authority": "EPSG", "code": 1166 } }, { "name": "World Geodetic System 1984 (G730)", "id": { "authority": "EPSG", "code": 1152 } }, { "name": "World Geodetic System 1984 (G873)", "id": { "authority": "EPSG", "code": 1153 } }, { "name": "World Geodetic System 1984 (G1150)", "id": { "authority": "EPSG", "code": 1154 } }, { "name": "World Geodetic System 1984 (G1674)", "id": { "authority": "EPSG", "code": 1155 } }, { "name": "World Geodetic System 1984 (G1762)", "id": { "authority": "EPSG", "code": 1156 } }, { "name": "World Geodetic System 1984 (G2139)", "id": { "authority": "EPSG", "code": 1309 } } ], "ellipsoid": { "name": "WGS 84", "semi_major_axis": 6378137, "inverse_flattening": 298.257223563 }, "accuracy": "2.0", "id": { "authority": "EPSG", "code": 6326 } }, "coordinate_system": { "subtype": "ellipsoidal", "axis": [ { "name": "Geodetic latitude", "abbreviation": "Lat", "direction": "north", "unit": "degree" }, { "name": "Geodetic longitude", "abbreviation": "Lon", "direction": "east", "unit": "degree" } ] }, "id": { "authority": "EPSG", "code": 4326 } }, "steps": [ { "type": "Transformation", "name": "Accra to WGS 72BE (1)", "source_crs": { "type": "GeographicCRS", "name": "Accra", "datum": { "type": "GeodeticReferenceFrame", "name": "Accra", "ellipsoid": { "name": "War Office", "semi_major_axis": 6378300, "inverse_flattening": 296 } }, "coordinate_system": { "subtype": "ellipsoidal", "axis": [ { "name": "Geodetic latitude", "abbreviation": "Lat", "direction": "north", "unit": "degree" }, { "name": "Geodetic longitude", "abbreviation": "Lon", "direction": "east", "unit": "degree" } ] }, "id": { "authority": "EPSG", "code": 4168 } }, "target_crs": { "type": "GeographicCRS", "name": "WGS 72BE", "datum": { "type": "DynamicGeodeticReferenceFrame", "name": "WGS 72 Transit Broadcast Ephemeris", "frame_reference_epoch": 1972, "ellipsoid": { "name": "WGS 72", "semi_major_axis": 6378135, "inverse_flattening": 298.26 } }, "coordinate_system": { "subtype": "ellipsoidal", "axis": [ { "name": "Geodetic latitude", "abbreviation": "Lat", "direction": "north", "unit": "degree" }, { "name": "Geodetic longitude", "abbreviation": "Lon", "direction": "east", "unit": "degree" } ] }, "id": { "authority": "EPSG", "code": 4324 } }, "method": { "name": "Geocentric translations (geog2D domain)", "id": { "authority": "EPSG", "code": 9603 } }, "parameters": [ { "name": "X-axis translation", "value": -171.16, "unit": "metre", "id": { "authority": "EPSG", "code": 8605 } }, { "name": "Y-axis translation", "value": 17.29, "unit": "metre", "id": { "authority": "EPSG", "code": 8606 } }, { "name": "Z-axis translation", "value": 323.31, "unit": "metre", "id": { "authority": "EPSG", "code": 8607 } } ], "accuracy": "25.0", "id": { "authority": "EPSG", "code": 1570 }, "remarks": "Derived be single point Transit observation at several locations." }, { "type": "Transformation", "name": "WGS 72BE to WGS 84 (1)", "source_crs": { "type": "GeographicCRS", "name": "WGS 72BE", "datum": { "type": "DynamicGeodeticReferenceFrame", "name": "WGS 72 Transit Broadcast Ephemeris", "frame_reference_epoch": 1972, "ellipsoid": { "name": "WGS 72", "semi_major_axis": 6378135, "inverse_flattening": 298.26 } }, "coordinate_system": { "subtype": "ellipsoidal", "axis": [ { "name": "Geodetic latitude", "abbreviation": "Lat", "direction": "north", "unit": "degree" }, { "name": "Geodetic longitude", "abbreviation": "Lon", "direction": "east", "unit": "degree" } ] }, "id": { "authority": "EPSG", "code": 4324 } }, "target_crs": { "type": "GeographicCRS", "name": "WGS 84", "datum_ensemble": { "name": "World Geodetic System 1984 ensemble", "members": [ { "name": "World Geodetic System 1984 (Transit)", "id": { "authority": "EPSG", "code": 1166 } }, { "name": "World Geodetic System 1984 (G730)", "id": { "authority": "EPSG", "code": 1152 } }, { "name": "World Geodetic System 1984 (G873)", "id": { "authority": "EPSG", "code": 1153 } }, { "name": "World Geodetic System 1984 (G1150)", "id": { "authority": "EPSG", "code": 1154 } }, { "name": "World Geodetic System 1984 (G1674)", "id": { "authority": "EPSG", "code": 1155 } }, { "name": "World Geodetic System 1984 (G1762)", "id": { "authority": "EPSG", "code": 1156 } }, { "name": "World Geodetic System 1984 (G2139)", "id": { "authority": "EPSG", "code": 1309 } } ], "ellipsoid": { "name": "WGS 84", "semi_major_axis": 6378137, "inverse_flattening": 298.257223563 }, "accuracy": "2.0", "id": { "authority": "EPSG", "code": 6326 } }, "coordinate_system": { "subtype": "ellipsoidal", "axis": [ { "name": "Geodetic latitude", "abbreviation": "Lat", "direction": "north", "unit": "degree" }, { "name": "Geodetic longitude", "abbreviation": "Lon", "direction": "east", "unit": "degree" } ] }, "id": { "authority": "EPSG", "code": 4326 } }, "method": { "name": "Position Vector transformation (geog2D domain)", "id": { "authority": "EPSG", "code": 9606 } }, "parameters": [ { "name": "X-axis translation", "value": 0, "unit": "metre", "id": { "authority": "EPSG", "code": 8605 } }, { "name": "Y-axis translation", "value": 0, "unit": "metre", "id": { "authority": "EPSG", "code": 8606 } }, { "name": "Z-axis translation", "value": 1.9, "unit": "metre", "id": { "authority": "EPSG", "code": 8607 } }, { "name": "X-axis rotation", "value": 0, "unit": { "type": "AngularUnit", "name": "arc-second", "conversion_factor": 4.84813681109536e-06 }, "id": { "authority": "EPSG", "code": 8608 } }, { "name": "Y-axis rotation", "value": 0, "unit": { "type": "AngularUnit", "name": "arc-second", "conversion_factor": 4.84813681109536e-06 }, "id": { "authority": "EPSG", "code": 8609 } }, { "name": "Z-axis rotation", "value": 0.814, "unit": { "type": "AngularUnit", "name": "arc-second", "conversion_factor": 4.84813681109536e-06 }, "id": { "authority": "EPSG", "code": 8610 } }, { "name": "Scale difference", "value": -0.38, "unit": { "type": "ScaleUnit", "name": "parts per million", "conversion_factor": 1e-06 }, "id": { "authority": "EPSG", "code": 8611 } } ], "accuracy": "2.0", "id": { "authority": "EPSG", "code": 1240 } } ], "accuracy": "26.0", "scope": "Oil and gas exploration and production.", "area": "Ghana - offshore.", "bbox": { "south_latitude": 1.4, "west_longitude": -3.79, "north_latitude": 6.06, "east_longitude": 2.1 }, "id": { "authority": "EPSG", "code": 8571 }, "remarks": "Can be implemented as a position vector tfm dX=-171.16 dY=17.29 dZ=325.21m, rX=rY=0 rZ=0.814\", dS=-0.38 ppm. See tfm code 15495. Found in use within oil industry erroneously concatenated as dX=-171.16 dY=17.29 dZ=327.81m, rX=rY0 rZ=0.554\", dS=0.2263 ppm." }
Definition: MapServer - MAPfile
PROJECTION "proj=pipeline" "step" "proj=axisswap" "order=2,1" "step" "proj=unitconvert" "xy_in=deg" "xy_out=rad" "step" "inv" "proj=longlat" "a=6378300" "rf=296" "step" "proj=push" "v_3" "step" "proj=cart" "a=6378300" "rf=296" "step" "proj=helmert" "x=-171.16" "y=17.29" "z=323.31" "step" "proj=helmert" "x=0" "y=0" "z=1.9" "rx=0" "ry=0" "rz=0.814" "s=-0.38" "convention=position_vector" "step" "inv" "proj=cart" "ellps=WGS84" "step" "proj=pop" "v_3" "step" "proj=unitconvert" "xy_in=rad" "xy_out=deg" "step" "proj=axisswap" "order=2,1" END
Definition: Mapnik
<?xml version="1.0" encoding="utf-8"?> <Map srs="+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +inv +proj=longlat +a=6378300 +rf=296 +step +proj=push +v_3 +step +proj=cart +a=6378300 +rf=296 +step +proj=helmert +x=-171.16 +y=17.29 +z=323.31 +step +proj=helmert +x=0 +y=0 +z=1.9 +rx=0 +ry=0 +rz=0.814 +s=-0.38 +convention=position_vector +step +inv +proj=cart +ellps=WGS84 +step +proj=pop +v_3 +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1"> <Layer srs="+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +inv +proj=longlat +a=6378300 +rf=296 +step +proj=push +v_3 +step +proj=cart +a=6378300 +rf=296 +step +proj=helmert +x=-171.16 +y=17.29 +z=323.31 +step +proj=helmert +x=0 +y=0 +z=1.9 +rx=0 +ry=0 +rz=0.814 +s=-0.38 +convention=position_vector +step +inv +proj=cart +ellps=WGS84 +step +proj=pop +v_3 +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1"> </Layer> </Map>
Definition: SQL (PostGIS)
INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 8571, 'EPSG', 8571, '+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +inv +proj=longlat +a=6378300 +rf=296 +step +proj=push +v_3 +step +proj=cart +a=6378300 +rf=296 +step +proj=helmert +x=-171.16 +y=17.29 +z=323.31 +step +proj=helmert +x=0 +y=0 +z=1.9 +rx=0 +ry=0 +rz=0.814 +s=-0.38 +convention=position_vector +step +inv +proj=cart +ellps=WGS84 +step +proj=pop +v_3 +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1', 'None');
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