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Geodetic CRS: ITRF93
Datum: International Terrestrial Reference Frame 1993
Ellipsoid: GRS 1980
Prime meridian: Greenwich
Data source: EPSG
Information source: International Earth Rotation Service (IERS) Technical Note 21, Conventions (1996).
Revision date: 2022-07-21
Scope: Geodesy.
Remarks: Scale difference in ppb and scale difference rate in ppb/yr where 1/billion = 1E-9 or nm/m. Superseded by parameter values derived from transformations to ITRF2020 (change in scale difference), see EPSG:10143.
Method: Time-dependent Position Vector tfm (geocentric)
Area of use: World.
Description: (0,)
Definition: OGC Well Known Text 2 (2019)
COORDINATEOPERATION["ITRF93 to ITRF94 (1)", VERSION["IERS-Wld"], SOURCECRS[ GEODCRS["ITRF93", DYNAMIC[ FRAMEEPOCH[1993]], DATUM["International Terrestrial Reference Frame 1993", 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",4915]]], TARGETCRS[ GEODCRS["ITRF94", DYNAMIC[ FRAMEEPOCH[1993]], DATUM["International Terrestrial Reference Frame 1994", 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",4916]]], METHOD["Time-dependent Position Vector tfm (geocentric)", ID["EPSG",1053]], PARAMETER["X-axis translation",-0.6, LENGTHUNIT["centimetre",0.01], ID["EPSG",8605]], PARAMETER["Y-axis translation",0.5, LENGTHUNIT["centimetre",0.01], ID["EPSG",8606]], PARAMETER["Z-axis translation",1.5, LENGTHUNIT["centimetre",0.01], ID["EPSG",8607]], PARAMETER["X-axis rotation",0.39, ANGLEUNIT["milliarc-second",4.84813681109536E-09], ID["EPSG",8608]], PARAMETER["Y-axis rotation",-0.8, ANGLEUNIT["milliarc-second",4.84813681109536E-09], ID["EPSG",8609]], PARAMETER["Z-axis rotation",0.96, ANGLEUNIT["milliarc-second",4.84813681109536E-09], ID["EPSG",8610]], PARAMETER["Scale difference",-0.4, SCALEUNIT["parts per billion",1E-09], ID["EPSG",8611]], PARAMETER["Rate of change of X-axis translation",0.29, LENGTHUNIT["centimetres per year",3.16887651727315E-10], ID["EPSG",1040]], PARAMETER["Rate of change of Y-axis translation",-0.04, LENGTHUNIT["centimetres per year",3.16887651727315E-10], ID["EPSG",1041]], PARAMETER["Rate of change of Z-axis translation",-0.08, LENGTHUNIT["centimetres per year",3.16887651727315E-10], ID["EPSG",1042]], PARAMETER["Rate of change of X-axis rotation",0.11, ANGLEUNIT["milliarc-seconds per year",1.53631468932076E-16], ID["EPSG",1043]], PARAMETER["Rate of change of Y-axis rotation",0.19, ANGLEUNIT["milliarc-seconds per year",1.53631468932076E-16], ID["EPSG",1044]], PARAMETER["Rate of change of Z-axis rotation",-0.05, 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",1988, TIMEUNIT["year",31556925.445], ID["EPSG",1047]], OPERATIONACCURACY[0.01], USAGE[ SCOPE["Geodesy."], AREA["World."], BBOX[-90,-180,90,180]], ID["EPSG",9025], REMARK["Scale difference in ppb and scale difference rate in ppb/yr where 1/billion = 1E-9 or nm/m. Superseded by parameter values derived from transformations to ITRF2020 (change in scale difference), see EPSG:10143."]]
Definition: JavaScript (Proj4js)
proj4.defs("EPSG:9025","+proj=helmert +x=-0.006 +y=0.005 +z=0.015 +rx=0.00039 +ry=-0.0008 +rz=0.00096 +s=-0.0004 +dx=0.0029 +dy=-0.0004 +dz=-0.0008 +drx=0.00011 +dry=0.00019 +drz=-5e-05 +ds=0 +t_epoch=1988 +convention=position_vector");
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "Transformation", "name": "ITRF93 to ITRF94 (1)", "source_crs": { "type": "GeodeticCRS", "name": "ITRF93", "datum": { "type": "DynamicGeodeticReferenceFrame", "name": "International Terrestrial Reference Frame 1993", "frame_reference_epoch": 1993, "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": 4915 } }, "target_crs": { "type": "GeodeticCRS", "name": "ITRF94", "datum": { "type": "DynamicGeodeticReferenceFrame", "name": "International Terrestrial Reference Frame 1994", "frame_reference_epoch": 1993, "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": 4916 } }, "method": { "name": "Time-dependent Position Vector tfm (geocentric)", "id": { "authority": "EPSG", "code": 1053 } }, "parameters": [ { "name": "X-axis translation", "value": -0.6, "unit": { "type": "LinearUnit", "name": "centimetre", "conversion_factor": 0.01 }, "id": { "authority": "EPSG", "code": 8605 } }, { "name": "Y-axis translation", "value": 0.5, "unit": { "type": "LinearUnit", "name": "centimetre", "conversion_factor": 0.01 }, "id": { "authority": "EPSG", "code": 8606 } }, { "name": "Z-axis translation", "value": 1.5, "unit": { "type": "LinearUnit", "name": "centimetre", "conversion_factor": 0.01 }, "id": { "authority": "EPSG", "code": 8607 } }, { "name": "X-axis rotation", "value": 0.39, "unit": { "type": "AngularUnit", "name": "milliarc-second", "conversion_factor": 4.84813681109536e-09 }, "id": { "authority": "EPSG", "code": 8608 } }, { "name": "Y-axis rotation", "value": -0.8, "unit": { "type": "AngularUnit", "name": "milliarc-second", "conversion_factor": 4.84813681109536e-09 }, "id": { "authority": "EPSG", "code": 8609 } }, { "name": "Z-axis rotation", "value": 0.96, "unit": { "type": "AngularUnit", "name": "milliarc-second", "conversion_factor": 4.84813681109536e-09 }, "id": { "authority": "EPSG", "code": 8610 } }, { "name": "Scale difference", "value": -0.4, "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": 0.29, "unit": { "type": "LinearUnit", "name": "centimetres per year", "conversion_factor": 3.16887651727315e-10 }, "id": { "authority": "EPSG", "code": 1040 } }, { "name": "Rate of change of Y-axis translation", "value": -0.04, "unit": { "type": "LinearUnit", "name": "centimetres per year", "conversion_factor": 3.16887651727315e-10 }, "id": { "authority": "EPSG", "code": 1041 } }, { "name": "Rate of change of Z-axis translation", "value": -0.08, "unit": { "type": "LinearUnit", "name": "centimetres per year", "conversion_factor": 3.16887651727315e-10 }, "id": { "authority": "EPSG", "code": 1042 } }, { "name": "Rate of change of X-axis rotation", "value": 0.11, "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": 0.19, "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": -0.05, "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": 1988, "unit": { "type": "TimeUnit", "name": "year", "conversion_factor": 31556925.445 }, "id": { "authority": "EPSG", "code": 1047 } } ], "accuracy": "0.01", "scope": "Geodesy.", "area": "World.", "bbox": { "south_latitude": -90, "west_longitude": -180, "north_latitude": 90, "east_longitude": 180 }, "id": { "authority": "EPSG", "code": 9025 }, "remarks": "Scale difference in ppb and scale difference rate in ppb/yr where 1/billion = 1E-9 or nm/m. Superseded by parameter values derived from transformations to ITRF2020 (change in scale difference), see EPSG:10143." }
Definition: MapServer - MAPfile
PROJECTION "proj=helmert" "x=-0.006" "y=0.005" "z=0.015" "rx=0.00039" "ry=-0.0008" "rz=0.00096" "s=-0.0004" "dx=0.0029" "dy=-0.0004" "dz=-0.0008" "drx=0.00011" "dry=0.00019" "drz=-5e-05" "ds=0" "t_epoch=1988" "convention=position_vector" END
Definition: Mapnik
<?xml version="1.0" encoding="utf-8"?> <Map srs="+proj=helmert +x=-0.006 +y=0.005 +z=0.015 +rx=0.00039 +ry=-0.0008 +rz=0.00096 +s=-0.0004 +dx=0.0029 +dy=-0.0004 +dz=-0.0008 +drx=0.00011 +dry=0.00019 +drz=-5e-05 +ds=0 +t_epoch=1988 +convention=position_vector"> <Layer srs="+proj=helmert +x=-0.006 +y=0.005 +z=0.015 +rx=0.00039 +ry=-0.0008 +rz=0.00096 +s=-0.0004 +dx=0.0029 +dy=-0.0004 +dz=-0.0008 +drx=0.00011 +dry=0.00019 +drz=-5e-05 +ds=0 +t_epoch=1988 +convention=position_vector"> </Layer> </Map>
Definition: SQL (PostGIS)
INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 9025, 'EPSG', 9025, '+proj=helmert +x=-0.006 +y=0.005 +z=0.015 +rx=0.00039 +ry=-0.0008 +rz=0.00096 +s=-0.0004 +dx=0.0029 +dy=-0.0004 +dz=-0.0008 +drx=0.00011 +dry=0.00019 +drz=-5e-05 +ds=0 +t_epoch=1988 +convention=position_vector', 'None');
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