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Geodetic CRS: ITRF2020
Datum: International Terrestrial Reference Frame 2020
Ellipsoid: GRS 1980
Prime meridian: Greenwich
Data source: EPSG
Information source: IOGP
Revision date: 2025-10-28
Scope: Spatial referencing.
Remarks: Accuracy is approximately 1cm at the ETRS89-MDA [MOLDREF99] anchor epoch of 1997.4 but deteriorates with time due to tectonic deformation and/or glacial isostatic adjustment.
Area of use: Moldova.
Description: (0,)
Definition: OGC Well Known Text 2 (2019)
CONCATENATEDOPERATION["ITRF2020 to ETRS89-MDA [MOLDREF99] (1)", VERSION["IOGP-Mda 1999"], SOURCECRS[ GEODCRS["ITRF2020", DYNAMIC[ FRAMEEPOCH[2015]], DATUM["International Terrestrial Reference Frame 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",9988]]], TARGETCRS[ GEODCRS["ETRS89-MDA [MOLDREF99]", DATUM["MOLDREF99", ELLIPSOID["GRS 1980",6378137,298.257222101, LENGTHUNIT["metre",1]], ANCHOREPOCH[1997.4]], 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",4000]]], STEP[ COORDINATEOPERATION["ITRF2020 to ETRF2000 (1)", VERSION["EUREF-Eur 2024"], SOURCECRS[ GEODCRS["ITRF2020", DYNAMIC[ FRAMEEPOCH[2015]], DATUM["International Terrestrial Reference Frame 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",9988]]], TARGETCRS[ GEODCRS["ETRF2000", DYNAMIC[ FRAMEEPOCH[1989]], DATUM["European Terrestrial Reference Frame 2000", 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",7930]]], METHOD["Time-dependent Position Vector tfm (geocentric)", ID["EPSG",1053]], PARAMETER["X-axis translation",53.8, LENGTHUNIT["millimetre",0.001], ID["EPSG",8605]], PARAMETER["Y-axis translation",51.8, LENGTHUNIT["millimetre",0.001], ID["EPSG",8606]], PARAMETER["Z-axis translation",-82.2, LENGTHUNIT["millimetre",0.001], ID["EPSG",8607]], PARAMETER["X-axis rotation",2.106, ANGLEUNIT["milliarc-second",4.84813681109536E-09], ID["EPSG",8608]], PARAMETER["Y-axis rotation",12.74, ANGLEUNIT["milliarc-second",4.84813681109536E-09], ID["EPSG",8609]], PARAMETER["Z-axis rotation",-20.592, ANGLEUNIT["milliarc-second",4.84813681109536E-09], ID["EPSG",8610]], PARAMETER["Scale difference",2.25, SCALEUNIT["parts per billion",1E-09], ID["EPSG",8611]], PARAMETER["Rate of change of X-axis translation",0.1, 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",-1.7, LENGTHUNIT["millimetres per year",3.16887651727315E-11], ID["EPSG",1042]], PARAMETER["Rate of change of X-axis rotation",0.081, ANGLEUNIT["milliarc-seconds per year",1.53631468932076E-16], ID["EPSG",1043]], PARAMETER["Rate of change of Y-axis rotation",0.49, ANGLEUNIT["milliarc-seconds per year",1.53631468932076E-16], ID["EPSG",1044]], PARAMETER["Rate of change of Z-axis rotation",-0.792, ANGLEUNIT["milliarc-seconds per year",1.53631468932076E-16], ID["EPSG",1045]], PARAMETER["Rate of change of Scale difference",0.11, SCALEUNIT["parts per billion per year",3.16887651727315E-17], ID["EPSG",1046]], PARAMETER["Parameter reference epoch",2015, TIMEUNIT["year",31556925.445], ID["EPSG",1047]], OPERATIONACCURACY[0.01], ID["EPSG",10586]]], STEP[ COORDINATEOPERATION["Inverse of ETRF97 to ETRF2000 (2) (approx. inversion)", SOURCECRS[ GEODCRS["ETRF2000", DYNAMIC[ FRAMEEPOCH[1989]], DATUM["European Terrestrial Reference Frame 2000", 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",7930]]], TARGETCRS[ GEODCRS["ETRF97", DYNAMIC[ FRAMEEPOCH[1989]], DATUM["European Terrestrial Reference Frame 1997", 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",7928]]], METHOD["Time-dependent Position Vector tfm (geocentric)", ID["EPSG",1053]], PARAMETER["X-axis translation",-0.0063, LENGTHUNIT["metre",1], ID["EPSG",8605]], PARAMETER["Y-axis translation",-0.0057, LENGTHUNIT["metre",1], ID["EPSG",8606]], PARAMETER["Z-axis translation",-0.0237, LENGTHUNIT["metre",1], ID["EPSG",8607]], PARAMETER["X-axis rotation",0.001309, ANGLEUNIT["arc-second",4.84813681109536E-06], ID["EPSG",8608]], PARAMETER["Y-axis rotation",0.00011, ANGLEUNIT["arc-second",4.84813681109536E-06], ID["EPSG",8609]], PARAMETER["Z-axis rotation",0.001622, ANGLEUNIT["arc-second",4.84813681109536E-06], ID["EPSG",8610]], PARAMETER["Scale difference",0.00158, SCALEUNIT["parts per million",1E-06], ID["EPSG",8611]], PARAMETER["Rate of change of X-axis translation",0, LENGTHUNIT["metres per year",3.16887651727315E-08], ID["EPSG",1040]], PARAMETER["Rate of change of Y-axis translation",-0.0006, LENGTHUNIT["metres per year",3.16887651727315E-08], ID["EPSG",1041]], PARAMETER["Rate of change of Z-axis translation",-0.0014, LENGTHUNIT["metres per year",3.16887651727315E-08], ID["EPSG",1042]], PARAMETER["Rate of change of X-axis rotation",0.000119, ANGLEUNIT["arc-seconds per year",1.53631468932076E-13], ID["EPSG",1043]], PARAMETER["Rate of change of Y-axis rotation",1E-05, ANGLEUNIT["arc-seconds per year",1.53631468932076E-13], ID["EPSG",1044]], PARAMETER["Rate of change of Z-axis rotation",0.000162, ANGLEUNIT["arc-seconds per year",1.53631468932076E-13], ID["EPSG",1045]], PARAMETER["Rate of change of Scale difference",1E-05, SCALEUNIT["parts per million per year",3.16887651727315E-14], ID["EPSG",1046]], PARAMETER["Parameter reference epoch",2000, TIMEUNIT["year",31556925.445], ID["EPSG",1047]], OPERATIONACCURACY[0.01], ID["INVERSE(EPSG)",11228]]], STEP[ COORDINATEOPERATION["Inverse of ETRS89-MDA [MOLDREF99] to ETRF97 (1)", SOURCECRS[ GEODCRS["ETRF97", DYNAMIC[ FRAMEEPOCH[1989]], DATUM["European Terrestrial Reference Frame 1997", 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",7928]]], TARGETCRS[ GEODCRS["ETRS89-MDA [MOLDREF99]", DATUM["MOLDREF99", ELLIPSOID["GRS 1980",6378137,298.257222101, LENGTHUNIT["metre",1]], ANCHOREPOCH[1997.4]], 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",4000]]], METHOD["Geocentric translations (geocentric domain)", ID["EPSG",1031]], 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",0, LENGTHUNIT["metre",1], ID["EPSG",8607]], OPERATIONACCURACY[0.1], ID["INVERSE(EPSG)",11205]]], OPERATIONACCURACY[0.1], USAGE[ SCOPE["Spatial referencing."], AREA["Moldova."], BBOX[45.44,26.63,48.47,30.13]], ID["EPSG",11285], REMARK["Accuracy is approximately 1cm at the ETRS89-MDA [MOLDREF99] anchor epoch of 1997.4 but deteriorates with time due to tectonic deformation and/or glacial isostatic adjustment."]]
Definition: PROJ.4
+proj=pipeline +step +proj=helmert +x=0.0538 +y=0.0518 +z=-0.0822 +rx=0.002106 +ry=0.01274 +rz=-0.020592 +s=0.00225 +dx=0.0001 +dy=0 +dz=-0.0017 +drx=8.1e-05 +dry=0.00049 +drz=-0.000792 +ds=0.00011 +t_epoch=2015 +convention=position_vector +step +inv +proj=helmert +x=0.0063 +y=0.0057 +z=0.0237 +rx=-0.001309 +ry=-0.00011 +rz=-0.001622 +s=-0.00158 +dx=0 +dy=0.0006 +dz=0.0014 +drx=-0.000119 +dry=-1e-05 +drz=-0.000162 +ds=-1e-05 +t_epoch=2000 +convention=position_vector
Definition: JavaScript (Proj4js)
proj4.defs("EPSG:11285","+proj=pipeline +step +proj=helmert +x=0.0538 +y=0.0518 +z=-0.0822 +rx=0.002106 +ry=0.01274 +rz=-0.020592 +s=0.00225 +dx=0.0001 +dy=0 +dz=-0.0017 +drx=8.1e-05 +dry=0.00049 +drz=-0.000792 +ds=0.00011 +t_epoch=2015 +convention=position_vector +step +inv +proj=helmert +x=0.0063 +y=0.0057 +z=0.0237 +rx=-0.001309 +ry=-0.00011 +rz=-0.001622 +s=-0.00158 +dx=0 +dy=0.0006 +dz=0.0014 +drx=-0.000119 +dry=-1e-05 +drz=-0.000162 +ds=-1e-05 +t_epoch=2000 +convention=position_vector");
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "ConcatenatedOperation", "name": "ITRF2020 to ETRS89-MDA [MOLDREF99] (1)", "source_crs": { "type": "GeodeticCRS", "name": "ITRF2020", "datum": { "type": "DynamicGeodeticReferenceFrame", "name": "International Terrestrial Reference Frame 2020", "frame_reference_epoch": 2015, "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": 9988 }, "remarks": "Replaces ITRF2014 (CRS code 7789). Replaced by ITRF2020-u2023 (CRS code 10779)." }, "target_crs": { "type": "GeodeticCRS", "name": "ETRS89-MDA [MOLDREF99]", "datum": { "type": "GeodeticReferenceFrame", "name": "MOLDREF99", "anchor_epoch": 1997.4, "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": 4000 } }, "steps": [ { "type": "Transformation", "name": "ITRF2020 to ETRF2000 (1)", "source_crs": { "type": "GeodeticCRS", "name": "ITRF2020", "datum": { "type": "DynamicGeodeticReferenceFrame", "name": "International Terrestrial Reference Frame 2020", "frame_reference_epoch": 2015, "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": 9988 }, "remarks": "Replaces ITRF2014 (CRS code 7789). Replaced by ITRF2020-u2023 (CRS code 10779)." }, "target_crs": { "type": "GeodeticCRS", "name": "ETRF2000", "datum": { "type": "DynamicGeodeticReferenceFrame", "name": "European Terrestrial Reference Frame 2000", "frame_reference_epoch": 1989, "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": 7930 }, "remarks": "Replaces ETRF97 (code 7928). On the publication of ETRF2005 the EUREF Technical Working Group recommended ETRF2000 be the realization of ETRS89. ETRF2014 and ETRF2020 (codes 8401 and 10569) are technically superior to all earlier realizations of ETRS89." }, "method": { "name": "Time-dependent Position Vector tfm (geocentric)", "id": { "authority": "EPSG", "code": 1053 } }, "parameters": [ { "name": "X-axis translation", "value": 53.8, "unit": { "type": "LinearUnit", "name": "millimetre", "conversion_factor": 0.001 }, "id": { "authority": "EPSG", "code": 8605 } }, { "name": "Y-axis translation", "value": 51.8, "unit": { "type": "LinearUnit", "name": "millimetre", "conversion_factor": 0.001 }, "id": { "authority": "EPSG", "code": 8606 } }, { "name": "Z-axis translation", "value": -82.2, "unit": { "type": "LinearUnit", "name": "millimetre", "conversion_factor": 0.001 }, "id": { "authority": "EPSG", "code": 8607 } }, { "name": "X-axis rotation", "value": 2.106, "unit": { "type": "AngularUnit", "name": "milliarc-second", "conversion_factor": 4.84813681109536e-09 }, "id": { "authority": "EPSG", "code": 8608 } }, { "name": "Y-axis rotation", "value": 12.74, "unit": { "type": "AngularUnit", "name": "milliarc-second", "conversion_factor": 4.84813681109536e-09 }, "id": { "authority": "EPSG", "code": 8609 } }, { "name": "Z-axis rotation", "value": -20.592, "unit": { "type": "AngularUnit", "name": "milliarc-second", "conversion_factor": 4.84813681109536e-09 }, "id": { "authority": "EPSG", "code": 8610 } }, { "name": "Scale difference", "value": 2.25, "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": 0.1, "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": -1.7, "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": 0.081, "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": 0.49, "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": -0.792, "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": 0.11, "unit": { "type": "ScaleUnit", "name": "parts per billion per year", "conversion_factor": 3.16887651727315e-17 }, "id": { "authority": "EPSG", "code": 1046 } }, { "name": "Parameter reference epoch", "value": 2015, "unit": { "type": "TimeUnit", "name": "year", "conversion_factor": 31556925.445 }, "id": { "authority": "EPSG", "code": 1047 } } ], "accuracy": "0.01", "id": { "authority": "EPSG", "code": 10586 }, "remarks": "Scale difference in ppb and scale difference rate in ppb/yr where 1/billion = 1E-9 or nm/m. Equivalent to ITRF2020 to ITRF2000 (1) (CT code 9994) converted to epoch 2015.0 concatenated with ITRF2000 to ETRF2000 (1) (CT code 7941) converted to epoch 2015.0." }, { "type": "Transformation", "name": "Inverse of ETRF97 to ETRF2000 (2)", "source_crs": { "type": "GeodeticCRS", "name": "ETRF2000", "datum": { "type": "DynamicGeodeticReferenceFrame", "name": "European Terrestrial Reference Frame 2000", "frame_reference_epoch": 1989, "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": 7930 }, "remarks": "Replaces ETRF97 (code 7928). On the publication of ETRF2005 the EUREF Technical Working Group recommended ETRF2000 be the realization of ETRS89. ETRF2014 and ETRF2020 (codes 8401 and 10569) are technically superior to all earlier realizations of ETRS89." }, "target_crs": { "type": "GeodeticCRS", "name": "ETRF97", "datum": { "type": "DynamicGeodeticReferenceFrame", "name": "European Terrestrial Reference Frame 1997", "frame_reference_epoch": 1989, "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": 7928 }, "remarks": "Replaces ETRF96 (code 7926). Replaced by ETRF2000 (code 7930)." }, "method": { "name": "Inverse of Time-dependent Position Vector tfm (geocentric)", "id": { "authority": "INVERSE(EPSG)", "code": 1053 } }, "parameters": [ { "name": "X-axis translation", "value": 6.3, "unit": { "type": "LinearUnit", "name": "millimetre", "conversion_factor": 0.001 }, "id": { "authority": "EPSG", "code": 8605 } }, { "name": "Y-axis translation", "value": 5.7, "unit": { "type": "LinearUnit", "name": "millimetre", "conversion_factor": 0.001 }, "id": { "authority": "EPSG", "code": 8606 } }, { "name": "Z-axis translation", "value": 23.7, "unit": { "type": "LinearUnit", "name": "millimetre", "conversion_factor": 0.001 }, "id": { "authority": "EPSG", "code": 8607 } }, { "name": "X-axis rotation", "value": -1.309, "unit": { "type": "AngularUnit", "name": "milliarc-second", "conversion_factor": 4.84813681109536e-09 }, "id": { "authority": "EPSG", "code": 8608 } }, { "name": "Y-axis rotation", "value": -0.11, "unit": { "type": "AngularUnit", "name": "milliarc-second", "conversion_factor": 4.84813681109536e-09 }, "id": { "authority": "EPSG", "code": 8609 } }, { "name": "Z-axis rotation", "value": -1.622, "unit": { "type": "AngularUnit", "name": "milliarc-second", "conversion_factor": 4.84813681109536e-09 }, "id": { "authority": "EPSG", "code": 8610 } }, { "name": "Scale difference", "value": -1.58, "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": 0.6, "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": 1.4, "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": -0.119, "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": -0.01, "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": -0.162, "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": -0.01, "unit": { "type": "ScaleUnit", "name": "parts per billion per year", "conversion_factor": 3.16887651727315e-17 }, "id": { "authority": "EPSG", "code": 1046 } }, { "name": "Parameter reference epoch", "value": 2000, "unit": { "type": "TimeUnit", "name": "year", "conversion_factor": 31556925.445 }, "id": { "authority": "EPSG", "code": 1047 } } ], "accuracy": "0.01", "id": { "authority": "INVERSE(EPSG)", "code": 11228 }, "remarks": "Derived from concatenation of ETRF97 to ITRF97 (CT code 7939, with direction reversed) reduced to epoch 2000.00 and ITRF97 to ETRF2000 (CT code 7949) reduced to epoch 2000.00. Scale difference in ppb and scale difference rate in ppb/yr where 1/billion = 1E-9 or nm/m." }, { "type": "Transformation", "name": "Inverse of ETRS89-MDA [MOLDREF99] to ETRF97 (1)", "source_crs": { "type": "GeodeticCRS", "name": "ETRF97", "datum": { "type": "DynamicGeodeticReferenceFrame", "name": "European Terrestrial Reference Frame 1997", "frame_reference_epoch": 1989, "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": 7928 }, "remarks": "Replaces ETRF96 (code 7926). Replaced by ETRF2000 (code 7930)." }, "target_crs": { "type": "GeodeticCRS", "name": "ETRS89-MDA [MOLDREF99]", "datum": { "type": "GeodeticReferenceFrame", "name": "MOLDREF99", "anchor_epoch": 1997.4, "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": 4000 } }, "method": { "name": "Geocentric translations (geocentric domain)", "id": { "authority": "EPSG", "code": 1031 } }, "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": 0, "unit": "metre", "id": { "authority": "EPSG", "code": 8607 } } ], "accuracy": "0.1", "id": { "authority": "INVERSE(EPSG)", "code": 11205 }, "remarks": "Accuracy is approximately 1cm at the ETRS89-MDA [MOLDREF99] anchor epoch of 1997.4 but deteriorates with time due to tectonic deformation and/or glacial isostatic adjustment." } ], "accuracy": "0.1", "scope": "Spatial referencing.", "area": "Moldova.", "bbox": { "south_latitude": 45.44, "west_longitude": 26.63, "north_latitude": 48.47, "east_longitude": 30.13 }, "id": { "authority": "EPSG", "code": 11285 }, "remarks": "Accuracy is approximately 1cm at the ETRS89-MDA [MOLDREF99] anchor epoch of 1997.4 but deteriorates with time due to tectonic deformation and/or glacial isostatic adjustment." }
Definition: MapServer - MAPfile
PROJECTION "proj=pipeline" "step" "proj=helmert" "x=0.0538" "y=0.0518" "z=-0.0822" "rx=0.002106" "ry=0.01274" "rz=-0.020592" "s=0.00225" "dx=0.0001" "dy=0" "dz=-0.0017" "drx=8.1e-05" "dry=0.00049" "drz=-0.000792" "ds=0.00011" "t_epoch=2015" "convention=position_vector" "step" "inv" "proj=helmert" "x=0.0063" "y=0.0057" "z=0.0237" "rx=-0.001309" "ry=-0.00011" "rz=-0.001622" "s=-0.00158" "dx=0" "dy=0.0006" "dz=0.0014" "drx=-0.000119" "dry=-1e-05" "drz=-0.000162" "ds=-1e-05" "t_epoch=2000" "convention=position_vector" END
Definition: Mapnik
<?xml version="1.0" encoding="utf-8"?> <Map srs="+proj=pipeline +step +proj=helmert +x=0.0538 +y=0.0518 +z=-0.0822 +rx=0.002106 +ry=0.01274 +rz=-0.020592 +s=0.00225 +dx=0.0001 +dy=0 +dz=-0.0017 +drx=8.1e-05 +dry=0.00049 +drz=-0.000792 +ds=0.00011 +t_epoch=2015 +convention=position_vector +step +inv +proj=helmert +x=0.0063 +y=0.0057 +z=0.0237 +rx=-0.001309 +ry=-0.00011 +rz=-0.001622 +s=-0.00158 +dx=0 +dy=0.0006 +dz=0.0014 +drx=-0.000119 +dry=-1e-05 +drz=-0.000162 +ds=-1e-05 +t_epoch=2000 +convention=position_vector"> <Layer srs="+proj=pipeline +step +proj=helmert +x=0.0538 +y=0.0518 +z=-0.0822 +rx=0.002106 +ry=0.01274 +rz=-0.020592 +s=0.00225 +dx=0.0001 +dy=0 +dz=-0.0017 +drx=8.1e-05 +dry=0.00049 +drz=-0.000792 +ds=0.00011 +t_epoch=2015 +convention=position_vector +step +inv +proj=helmert +x=0.0063 +y=0.0057 +z=0.0237 +rx=-0.001309 +ry=-0.00011 +rz=-0.001622 +s=-0.00158 +dx=0 +dy=0.0006 +dz=0.0014 +drx=-0.000119 +dry=-1e-05 +drz=-0.000162 +ds=-1e-05 +t_epoch=2000 +convention=position_vector"> </Layer> </Map>
Definition: SQL (PostGIS)
INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 11285, 'EPSG', 11285, '+proj=pipeline +step +proj=helmert +x=0.0538 +y=0.0518 +z=-0.0822 +rx=0.002106 +ry=0.01274 +rz=-0.020592 +s=0.00225 +dx=0.0001 +dy=0 +dz=-0.0017 +drx=8.1e-05 +dry=0.00049 +drz=-0.000792 +ds=0.00011 +t_epoch=2015 +convention=position_vector +step +inv +proj=helmert +x=0.0063 +y=0.0057 +z=0.0237 +rx=-0.001309 +ry=-0.00011 +rz=-0.001622 +s=-0.00158 +dx=0 +dy=0.0006 +dz=0.0014 +drx=-0.000119 +dry=-1e-05 +drz=-0.000162 +ds=-1e-05 +t_epoch=2000 +convention=position_vector', 'None');
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