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Geodetic CRS: GDA94
Datum: Geocentric Datum of Australia 1994
Ellipsoid: GRS 1980
Prime meridian: Greenwich
Data source: EPSG
Information source: GDA2020 Technical Manual, ANZLIC Intergovernmental Committee on Surveying and Mapping (ICSM) (http://www.icsm.gov.au).
Revision date: 2021-01-18
Scope: Transformation of GDA94 coordinates when localised distortion needs to be taken into account, e.g. if GDA94 coordinates were derived from survey control monuments.
Remarks: See GDA94 to WGS 84 (G1762) (1) (CT code 9686) for conformal-only alternative (i.e. without distortion modelling).
Description: (0,)
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Definition: OGC Well Known Text 2 (2019)
CONCATENATEDOPERATION["GDA94 to WGS 84 (G1762) (2)", VERSION["ICSM-Aus Conf+Dist"], SOURCECRS[ GEOGCRS["GDA94", DATUM["Geocentric Datum of Australia 1994", 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]], ID["EPSG",4283]]], TARGETCRS[ GEOGCRS["WGS 84 (G1762)", DYNAMIC[ FRAMEEPOCH[2005]], DATUM["World Geodetic System 1984 (G1762)", 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]], ID["EPSG",9057]]], STEP[ COORDINATEOPERATION["GDA94 to GDA2020 (2)", VERSION["ICSM-Aus Conf and Dist"], SOURCECRS[ GEOGCRS["GDA94", DATUM["Geocentric Datum of Australia 1994", 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]], ID["EPSG",4283]]], TARGETCRS[ GEOGCRS["GDA2020", DATUM["Geocentric Datum of Australia 2020", 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]], ID["EPSG",7844]]], METHOD["NTv2", ID["EPSG",9615]], PARAMETERFILE["Latitude and longitude difference file","GDA94_GDA2020_conformal_and_distortion.gsb"], OPERATIONACCURACY[0.05], ID["EPSG",8447], REMARK["See GDA94 to GDA2020 (1) or (3) (codes 8048 and 8446) for alternative conformal-only transformation without local distortion modelling. GDA2020 Technical Manual and fact sheet T1 give guidance on which to use."]]], STEP[ CONVERSION["Conversion from GDA2020 (geog2D) to GDA2020 (geocentric)", METHOD["Geographic/geocentric conversions", ID["EPSG",9602]]]], STEP[ COORDINATEOPERATION["GDA2020 to WGS 84 (G1762) (1)", VERSION["GA-Aus 0.2m"], SOURCECRS[ GEODCRS["GDA2020", DATUM["Geocentric Datum of Australia 2020", ELLIPSOID["GRS 1980",6378137,298.257222101, LENGTHUNIT["metre",1]]], PRIMEM["Greenwich",0, ANGLEUNIT["degree",0.0174532925199433]], CS[Cartesian,3], AXIS["(X)",geocentricX, ORDER[1], LENGTHUNIT["metre",1]], AXIS["(Y)",geocentricY, ORDER[2], LENGTHUNIT["metre",1]], AXIS["(Z)",geocentricZ, ORDER[3], LENGTHUNIT["metre",1]], ID["EPSG",7842]]], TARGETCRS[ GEODCRS["WGS 84 (G1762)", DYNAMIC[ FRAMEEPOCH[2005]], DATUM["World Geodetic System 1984 (G1762)", ELLIPSOID["WGS 84",6378137,298.257223563, LENGTHUNIT["metre",1]]], PRIMEM["Greenwich",0, ANGLEUNIT["degree",0.0174532925199433]], CS[Cartesian,3], AXIS["(X)",geocentricX, ORDER[1], LENGTHUNIT["metre",1]], AXIS["(Y)",geocentricY, ORDER[2], LENGTHUNIT["metre",1]], AXIS["(Z)",geocentricZ, ORDER[3], LENGTHUNIT["metre",1]], ID["EPSG",7664]]], METHOD["Time-dependent Coordinate Frame rotation (geocen)", ID["EPSG",1056]], PARAMETER["X-axis translation",0, LENGTHUNIT["millimetre",0.001], ID["EPSG",8605]], PARAMETER["Y-axis translation",0, LENGTHUNIT["millimetre",0.001], ID["EPSG",8606]], PARAMETER["Z-axis translation",0, LENGTHUNIT["millimetre",0.001], ID["EPSG",8607]], PARAMETER["X-axis rotation",0, ANGLEUNIT["milliarc-second",4.84813681109536E-09], ID["EPSG",8608]], PARAMETER["Y-axis rotation",0, ANGLEUNIT["milliarc-second",4.84813681109536E-09], ID["EPSG",8609]], PARAMETER["Z-axis rotation",0, ANGLEUNIT["milliarc-second",4.84813681109536E-09], ID["EPSG",8610]], PARAMETER["Scale difference",0, SCALEUNIT["parts per billion",1E-09], ID["EPSG",8611]], PARAMETER["Rate of change of X-axis translation",0, LENGTHUNIT["millimetres per year",3.16887651727315E-11], ID["EPSG",1040]], PARAMETER["Rate of change of Y-axis translation",0, LENGTHUNIT["millimetres per year",3.16887651727315E-11], ID["EPSG",1041]], PARAMETER["Rate of change of Z-axis translation",0, LENGTHUNIT["millimetres per year",3.16887651727315E-11], ID["EPSG",1042]], PARAMETER["Rate of change of X-axis rotation",-1.50379, ANGLEUNIT["milliarc-seconds per year",1.53631468932076E-16], ID["EPSG",1043]], PARAMETER["Rate of change of Y-axis rotation",-1.18346, ANGLEUNIT["milliarc-seconds per year",1.53631468932076E-16], ID["EPSG",1044]], PARAMETER["Rate of change of Z-axis rotation",-1.20716, ANGLEUNIT["milliarc-seconds per year",1.53631468932076E-16], ID["EPSG",1045]], PARAMETER["Rate of change of Scale difference",0, SCALEUNIT["parts per billion per year",3.16887651727315E-17], ID["EPSG",1046]], PARAMETER["Parameter reference epoch",2020, TIMEUNIT["year",31556925.445], ID["EPSG",1047]], OPERATIONACCURACY[0.2], ID["EPSG",8448], REMARK["Scale difference in ppb and scale difference rate in ppb/yr where 1/billion = 1E-9 or nm/m. Parameter values taken from ITRF2014 to GDA2020 (1) (code 8049), assuming WGS 84 (G1762) is equivalent to ITRF2014 within the accuracy of the transformation."]]], STEP[ CONVERSION["Conversion from WGS 84 (G1762) (geocentric) to WGS 84 (G1762) (geog2D)", METHOD["Geographic/geocentric conversions", ID["EPSG",9602]]]], OPERATIONACCURACY[0.25], USAGE[ SCOPE["Transformation of GDA94 coordinates when localised distortion needs to be taken into account, e.g. if GDA94 coordinates were derived from survey control monuments."], AREA["Australia - Australian Capital Territory; New South Wales; Northern Territory; Queensland; South Australia; Tasmania; Western Australia; Victoria."], BBOX[-43.7,112.85,-9.86,153.69]], ID["EPSG",9687], REMARK["See GDA94 to WGS 84 (G1762) (1) (CT code 9686) for conformal-only alternative (i.e. without distortion modelling)."]]
Definition: PROJ.4
+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +proj=hgridshift +grids=au_icsm_GDA94_GDA2020_conformal_and_distortion.tif +step +proj=cart +ellps=GRS80 +step +proj=helmert +x=0 +y=0 +z=0 +rx=0 +ry=0 +rz=0 +s=0 +dx=0 +dy=0 +dz=0 +drx=-0.00150379 +dry=-0.00118346 +drz=-0.00120716 +ds=0 +t_epoch=2020 +convention=coordinate_frame +step +inv +proj=cart +ellps=WGS84 +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1
Definition: JavaScript (Proj4js)
proj4.defs("EPSG:9687","+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +proj=hgridshift +grids=au_icsm_GDA94_GDA2020_conformal_and_distortion.tif +step +proj=cart +ellps=GRS80 +step +proj=helmert +x=0 +y=0 +z=0 +rx=0 +ry=0 +rz=0 +s=0 +dx=0 +dy=0 +dz=0 +drx=-0.00150379 +dry=-0.00118346 +drz=-0.00120716 +ds=0 +t_epoch=2020 +convention=coordinate_frame +step +inv +proj=cart +ellps=WGS84 +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": "GDA94 to WGS 84 (G1762) (2)", "source_crs": { "type": "GeographicCRS", "name": "GDA94", "datum": { "type": "GeodeticReferenceFrame", "name": "Geocentric Datum of Australia 1994", "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" } ] }, "id": { "authority": "EPSG", "code": 4283 } }, "target_crs": { "type": "GeographicCRS", "name": "WGS 84 (G1762)", "datum": { "type": "DynamicGeodeticReferenceFrame", "name": "World Geodetic System 1984 (G1762)", "frame_reference_epoch": 2005, "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" } ] }, "id": { "authority": "EPSG", "code": 9057 } }, "steps": [ { "type": "Transformation", "name": "GDA94 to GDA2020 (2)", "source_crs": { "type": "GeographicCRS", "name": "GDA94", "datum": { "type": "GeodeticReferenceFrame", "name": "Geocentric Datum of Australia 1994", "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" } ] }, "id": { "authority": "EPSG", "code": 4283 } }, "target_crs": { "type": "GeographicCRS", "name": "GDA2020", "datum": { "type": "GeodeticReferenceFrame", "name": "Geocentric Datum of Australia 2020", "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" } ] }, "id": { "authority": "EPSG", "code": 7844 } }, "method": { "name": "NTv2", "id": { "authority": "EPSG", "code": 9615 } }, "parameters": [ { "name": "Latitude and longitude difference file", "value": "GDA94_GDA2020_conformal_and_distortion.gsb", "id": { "authority": "EPSG", "code": 8656 } } ], "accuracy": "0.05", "id": { "authority": "EPSG", "code": 8447 }, "remarks": "See GDA94 to GDA2020 (1) or (3) (codes 8048 and 8446) for alternative conformal-only transformation without local distortion modelling. GDA2020 Technical Manual and fact sheet T1 give guidance on which to use." }, { "type": "Conversion", "name": "Conversion from GDA2020 (geog2D) to GDA2020 (geocentric)", "method": { "name": "Geographic/geocentric conversions", "id": { "authority": "EPSG", "code": 9602 } } }, { "type": "Transformation", "name": "GDA2020 to WGS 84 (G1762) (1)", "source_crs": { "type": "GeodeticCRS", "name": "GDA2020", "datum": { "type": "GeodeticReferenceFrame", "name": "Geocentric Datum of Australia 2020", "ellipsoid": { "name": "GRS 1980", "semi_major_axis": 6378137, "inverse_flattening": 298.257222101 } }, "coordinate_system": { "subtype": "Cartesian", "axis": [ { "name": "Geocentric X", "abbreviation": "X", "direction": "geocentricX", "unit": "metre" }, { "name": "Geocentric Y", "abbreviation": "Y", "direction": "geocentricY", "unit": "metre" }, { "name": "Geocentric Z", "abbreviation": "Z", "direction": "geocentricZ", "unit": "metre" } ] }, "id": { "authority": "EPSG", "code": 7842 } }, "target_crs": { "type": "GeodeticCRS", "name": "WGS 84 (G1762)", "datum": { "type": "DynamicGeodeticReferenceFrame", "name": "World Geodetic System 1984 (G1762)", "frame_reference_epoch": 2005, "ellipsoid": { "name": "WGS 84", "semi_major_axis": 6378137, "inverse_flattening": 298.257223563 } }, "coordinate_system": { "subtype": "Cartesian", "axis": [ { "name": "Geocentric X", "abbreviation": "X", "direction": "geocentricX", "unit": "metre" }, { "name": "Geocentric Y", "abbreviation": "Y", "direction": "geocentricY", "unit": "metre" }, { "name": "Geocentric Z", "abbreviation": "Z", "direction": "geocentricZ", "unit": "metre" } ] }, "id": { "authority": "EPSG", "code": 7664 } }, "method": { "name": "Time-dependent Coordinate Frame rotation (geocen)", "id": { "authority": "EPSG", "code": 1056 } }, "parameters": [ { "name": "X-axis translation", "value": 0, "unit": { "type": "LinearUnit", "name": "millimetre", "conversion_factor": 0.001 }, "id": { "authority": "EPSG", "code": 8605 } }, { "name": "Y-axis translation", "value": 0, "unit": { "type": "LinearUnit", "name": "millimetre", "conversion_factor": 0.001 }, "id": { "authority": "EPSG", "code": 8606 } }, { "name": "Z-axis translation", "value": 0, "unit": { "type": "LinearUnit", "name": "millimetre", "conversion_factor": 0.001 }, "id": { "authority": "EPSG", "code": 8607 } }, { "name": "X-axis rotation", "value": 0, "unit": { "type": "AngularUnit", "name": "milliarc-second", "conversion_factor": 4.84813681109536e-09 }, "id": { "authority": "EPSG", "code": 8608 } }, { "name": "Y-axis rotation", "value": 0, "unit": { "type": "AngularUnit", "name": "milliarc-second", "conversion_factor": 4.84813681109536e-09 }, "id": { "authority": "EPSG", "code": 8609 } }, { "name": "Z-axis rotation", "value": 0, "unit": { "type": "AngularUnit", "name": "milliarc-second", "conversion_factor": 4.84813681109536e-09 }, "id": { "authority": "EPSG", "code": 8610 } }, { "name": "Scale difference", "value": 0, "unit": { "type": "ScaleUnit", "name": "parts per billion", "conversion_factor": 1e-09 }, "id": { "authority": "EPSG", "code": 8611 } }, { "name": "Rate of change of X-axis translation", "value": 0, "unit": { "type": "LinearUnit", "name": "millimetres per year", "conversion_factor": 3.16887651727315e-11 }, "id": { "authority": "EPSG", "code": 1040 } }, { "name": "Rate of change of Y-axis translation", "value": 0, "unit": { "type": "LinearUnit", "name": "millimetres per year", "conversion_factor": 3.16887651727315e-11 }, "id": { "authority": "EPSG", "code": 1041 } }, { "name": "Rate of change of Z-axis translation", "value": 0, "unit": { "type": "LinearUnit", "name": "millimetres per year", "conversion_factor": 3.16887651727315e-11 }, "id": { "authority": "EPSG", "code": 1042 } }, { "name": "Rate of change of X-axis rotation", "value": -1.50379, "unit": { "type": "AngularUnit", "name": "milliarc-seconds per year", "conversion_factor": 1.53631468932076e-16 }, "id": { "authority": "EPSG", "code": 1043 } }, { "name": "Rate of change of Y-axis rotation", "value": -1.18346, "unit": { "type": "AngularUnit", "name": "milliarc-seconds per year", "conversion_factor": 1.53631468932076e-16 }, "id": { "authority": "EPSG", "code": 1044 } }, { "name": "Rate of change of Z-axis rotation", "value": -1.20716, "unit": { "type": "AngularUnit", "name": "milliarc-seconds per year", "conversion_factor": 1.53631468932076e-16 }, "id": { "authority": "EPSG", "code": 1045 } }, { "name": "Rate of change of Scale difference", "value": 0, "unit": { "type": "ScaleUnit", "name": "parts per billion per year", "conversion_factor": 3.16887651727315e-17 }, "id": { "authority": "EPSG", "code": 1046 } }, { "name": "Parameter reference epoch", "value": 2020, "unit": { "type": "TimeUnit", "name": "year", "conversion_factor": 31556925.445 }, "id": { "authority": "EPSG", "code": 1047 } } ], "accuracy": "0.2", "id": { "authority": "EPSG", "code": 8448 }, "remarks": "Scale difference in ppb and scale difference rate in ppb/yr where 1/billion = 1E-9 or nm/m. Parameter values taken from ITRF2014 to GDA2020 (1) (code 8049), assuming WGS 84 (G1762) is equivalent to ITRF2014 within the accuracy of the transformation." }, { "type": "Conversion", "name": "Conversion from WGS 84 (G1762) (geocentric) to WGS 84 (G1762) (geog2D)", "method": { "name": "Geographic/geocentric conversions", "id": { "authority": "EPSG", "code": 9602 } } } ], "accuracy": "0.25", "scope": "Transformation of GDA94 coordinates when localised distortion needs to be taken into account, e.g. if GDA94 coordinates were derived from survey control monuments.", "area": "Australia - Australian Capital Territory; New South Wales; Northern Territory; Queensland; South Australia; Tasmania; Western Australia; Victoria.", "bbox": { "south_latitude": -43.7, "west_longitude": 112.85, "north_latitude": -9.86, "east_longitude": 153.69 }, "id": { "authority": "EPSG", "code": 9687 }, "remarks": "See GDA94 to WGS 84 (G1762) (1) (CT code 9686) for conformal-only alternative (i.e. without distortion modelling)." }
Definition: MapServer - MAPfile
PROJECTION "proj=pipeline" "step" "proj=axisswap" "order=2,1" "step" "proj=unitconvert" "xy_in=deg" "xy_out=rad" "step" "proj=hgridshift" "grids=au_icsm_GDA94_GDA2020_conformal_and_distortion.tif" "step" "proj=cart" "ellps=GRS80" "step" "proj=helmert" "x=0" "y=0" "z=0" "rx=0" "ry=0" "rz=0" "s=0" "dx=0" "dy=0" "dz=0" "drx=-0.00150379" "dry=-0.00118346" "drz=-0.00120716" "ds=0" "t_epoch=2020" "convention=coordinate_frame" "step" "inv" "proj=cart" "ellps=WGS84" "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 +proj=hgridshift +grids=au_icsm_GDA94_GDA2020_conformal_and_distortion.tif +step +proj=cart +ellps=GRS80 +step +proj=helmert +x=0 +y=0 +z=0 +rx=0 +ry=0 +rz=0 +s=0 +dx=0 +dy=0 +dz=0 +drx=-0.00150379 +dry=-0.00118346 +drz=-0.00120716 +ds=0 +t_epoch=2020 +convention=coordinate_frame +step +inv +proj=cart +ellps=WGS84 +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 +proj=hgridshift +grids=au_icsm_GDA94_GDA2020_conformal_and_distortion.tif +step +proj=cart +ellps=GRS80 +step +proj=helmert +x=0 +y=0 +z=0 +rx=0 +ry=0 +rz=0 +s=0 +dx=0 +dy=0 +dz=0 +drx=-0.00150379 +dry=-0.00118346 +drz=-0.00120716 +ds=0 +t_epoch=2020 +convention=coordinate_frame +step +inv +proj=cart +ellps=WGS84 +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 ( 9687, 'EPSG', 9687, '+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +proj=hgridshift +grids=au_icsm_GDA94_GDA2020_conformal_and_distortion.tif +step +proj=cart +ellps=GRS80 +step +proj=helmert +x=0 +y=0 +z=0 +rx=0 +ry=0 +rz=0 +s=0 +dx=0 +dy=0 +dz=0 +drx=-0.00150379 +dry=-0.00118346 +drz=-0.00120716 +ds=0 +t_epoch=2020 +convention=coordinate_frame +step +inv +proj=cart +ellps=WGS84 +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1', 'None');
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