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Geodetic CRS: Nahrwan 1967
Datum: Nahrwan 1967
Ellipsoid: Clarke 1880 (RGS)
Prime meridian: Greenwich
Data source: EPSG
Information source: ADCO
Revision date: 2020-03-14
Scope: Oil and gas exploration and production.
Remarks: Derived in October 2013 at four control points of the ADCO CRF and evaluated at four others. Estimated horizontal accuracy of 0.14 m at the 95% confidence level.
Method: Coordinate Frame rotation (geog2D domain)
Area of use: United Arab Emirates (UAE) - Abu Dhabi onshore.
Description: (-253.4392, -148.452, 386.5267, -0.15605, -0.43, 0.1013, -0.0424)
Definition: OGC Well Known Text 2 (2019)
COORDINATEOPERATION["Nahrwan 1967 to WGS 84 (12)", VERSION["ADCO-UAE Abd 2013"], SOURCECRS[ GEOGCRS["Nahrwan 1967", DATUM["Nahrwan 1967", ELLIPSOID["Clarke 1880 (RGS)",6378249.145,293.465, 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",4270]]], 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["Coordinate Frame rotation (geog2D domain)", ID["EPSG",9607]], PARAMETER["X-axis translation",-253.4392, LENGTHUNIT["metre",1], ID["EPSG",8605]], PARAMETER["Y-axis translation",-148.452, LENGTHUNIT["metre",1], ID["EPSG",8606]], PARAMETER["Z-axis translation",386.5267, LENGTHUNIT["metre",1], ID["EPSG",8607]], PARAMETER["X-axis rotation",-0.15605, ANGLEUNIT["arc-second",4.84813681109536E-06], ID["EPSG",8608]], PARAMETER["Y-axis rotation",-0.43, ANGLEUNIT["arc-second",4.84813681109536E-06], ID["EPSG",8609]], PARAMETER["Z-axis rotation",0.1013, ANGLEUNIT["arc-second",4.84813681109536E-06], ID["EPSG",8610]], PARAMETER["Scale difference",-0.0424, SCALEUNIT["parts per million",1E-06], ID["EPSG",8611]], OPERATIONACCURACY[0.15], USAGE[ SCOPE["Oil and gas exploration and production."], AREA["United Arab Emirates (UAE) - Abu Dhabi onshore."], BBOX[22.63,51.56,24.95,56.03]], ID["EPSG",6999], REMARK["Derived in October 2013 at four control points of the ADCO CRF and evaluated at four others. Estimated horizontal accuracy of 0.14 m at the 95% confidence level."]]
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=6378249.145 +rf=293.465 +step +proj=push +v_3 +step +proj=cart +a=6378249.145 +rf=293.465 +step +proj=helmert +x=-253.4392 +y=-148.452 +z=386.5267 +rx=-0.15605 +ry=-0.43 +rz=0.1013 +s=-0.0424 +convention=coordinate_frame +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:6999","+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +inv +proj=longlat +a=6378249.145 +rf=293.465 +step +proj=push +v_3 +step +proj=cart +a=6378249.145 +rf=293.465 +step +proj=helmert +x=-253.4392 +y=-148.452 +z=386.5267 +rx=-0.15605 +ry=-0.43 +rz=0.1013 +s=-0.0424 +convention=coordinate_frame +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": "Transformation", "name": "Nahrwan 1967 to WGS 84 (12)", "source_crs": { "type": "GeographicCRS", "name": "Nahrwan 1967", "datum": { "type": "GeodeticReferenceFrame", "name": "Nahrwan 1967", "ellipsoid": { "name": "Clarke 1880 (RGS)", "semi_major_axis": 6378249.145, "inverse_flattening": 293.465 } }, "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": 4270 } }, "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": "Coordinate Frame rotation (geog2D domain)", "id": { "authority": "EPSG", "code": 9607 } }, "parameters": [ { "name": "X-axis translation", "value": -253.4392, "unit": "metre", "id": { "authority": "EPSG", "code": 8605 } }, { "name": "Y-axis translation", "value": -148.452, "unit": "metre", "id": { "authority": "EPSG", "code": 8606 } }, { "name": "Z-axis translation", "value": 386.5267, "unit": "metre", "id": { "authority": "EPSG", "code": 8607 } }, { "name": "X-axis rotation", "value": -0.15605, "unit": { "type": "AngularUnit", "name": "arc-second", "conversion_factor": 4.84813681109536e-06 }, "id": { "authority": "EPSG", "code": 8608 } }, { "name": "Y-axis rotation", "value": -0.43, "unit": { "type": "AngularUnit", "name": "arc-second", "conversion_factor": 4.84813681109536e-06 }, "id": { "authority": "EPSG", "code": 8609 } }, { "name": "Z-axis rotation", "value": 0.1013, "unit": { "type": "AngularUnit", "name": "arc-second", "conversion_factor": 4.84813681109536e-06 }, "id": { "authority": "EPSG", "code": 8610 } }, { "name": "Scale difference", "value": -0.0424, "unit": { "type": "ScaleUnit", "name": "parts per million", "conversion_factor": 1e-06 }, "id": { "authority": "EPSG", "code": 8611 } } ], "accuracy": "0.15", "scope": "Oil and gas exploration and production.", "area": "United Arab Emirates (UAE) - Abu Dhabi onshore.", "bbox": { "south_latitude": 22.63, "west_longitude": 51.56, "north_latitude": 24.95, "east_longitude": 56.03 }, "id": { "authority": "EPSG", "code": 6999 }, "remarks": "Derived in October 2013 at four control points of the ADCO CRF and evaluated at four others. Estimated horizontal accuracy of 0.14 m at the 95% confidence level." }
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=6378249.145" "rf=293.465" "step" "proj=push" "v_3" "step" "proj=cart" "a=6378249.145" "rf=293.465" "step" "proj=helmert" "x=-253.4392" "y=-148.452" "z=386.5267" "rx=-0.15605" "ry=-0.43" "rz=0.1013" "s=-0.0424" "convention=coordinate_frame" "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=6378249.145 +rf=293.465 +step +proj=push +v_3 +step +proj=cart +a=6378249.145 +rf=293.465 +step +proj=helmert +x=-253.4392 +y=-148.452 +z=386.5267 +rx=-0.15605 +ry=-0.43 +rz=0.1013 +s=-0.0424 +convention=coordinate_frame +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=6378249.145 +rf=293.465 +step +proj=push +v_3 +step +proj=cart +a=6378249.145 +rf=293.465 +step +proj=helmert +x=-253.4392 +y=-148.452 +z=386.5267 +rx=-0.15605 +ry=-0.43 +rz=0.1013 +s=-0.0424 +convention=coordinate_frame +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 ( 6999, 'EPSG', 6999, '+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +inv +proj=longlat +a=6378249.145 +rf=293.465 +step +proj=push +v_3 +step +proj=cart +a=6378249.145 +rf=293.465 +step +proj=helmert +x=-253.4392 +y=-148.452 +z=386.5267 +rx=-0.15605 +ry=-0.43 +rz=0.1013 +s=-0.0424 +convention=coordinate_frame +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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