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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: 2026-07-21
Definition: OGC Well Known Text 2 (2019)
CONCATENATEDOPERATION["ITRF2020 to ETRS89-CHE [CHTRS95] (1)", VERSION["IOGP-Che 1995"], 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-CHE [CHTRS95]", DATUM["Swiss Terrestrial Reference System 1995", ELLIPSOID["GRS 1980",6378137,298.257222101, LENGTHUNIT["metre",1]], ANCHOREPOCH[1993]], 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",4932]]], 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 ETRS89-CHE [CHTRS95] to ETRF2000 (1) (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["ETRS89-CHE [CHTRS95]", DATUM["Swiss Terrestrial Reference System 1995", ELLIPSOID["GRS 1980",6378137,298.257222101, LENGTHUNIT["metre",1]], ANCHOREPOCH[1993]], 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",4932]]], METHOD["Time-dependent Position Vector tfm (geocentric)", ID["EPSG",1053]], PARAMETER["X-axis translation",-0.0571, LENGTHUNIT["metre",1], ID["EPSG",8605]], PARAMETER["Y-axis translation",0.0061, LENGTHUNIT["metre",1], ID["EPSG",8606]], PARAMETER["Z-axis translation",-0.0011, LENGTHUNIT["metre",1], ID["EPSG",8607]], PARAMETER["X-axis rotation",-0.001321, ANGLEUNIT["arc-second",4.84813681109536E-06], ID["EPSG",8608]], PARAMETER["Y-axis rotation",-0.00375, ANGLEUNIT["arc-second",4.84813681109536E-06], ID["EPSG",8609]], PARAMETER["Z-axis rotation",0.005732, ANGLEUNIT["arc-second",4.84813681109536E-06], ID["EPSG",8610]], PARAMETER["Scale difference",0.00207, SCALEUNIT["parts per million",1E-06], ID["EPSG",8611]], PARAMETER["Rate of change of X-axis translation",-0.0029, LENGTHUNIT["metres per year",3.16887651727315E-08], ID["EPSG",1040]], PARAMETER["Rate of change of Y-axis translation",-0.0002, LENGTHUNIT["metres per year",3.16887651727315E-08], ID["EPSG",1041]], PARAMETER["Rate of change of Z-axis translation",-0.0006, LENGTHUNIT["metres per year",3.16887651727315E-08], ID["EPSG",1042]], PARAMETER["Rate of change of X-axis rotation",0.000129, ANGLEUNIT["arc-seconds per year",1.53631468932076E-13], ID["EPSG",1043]], PARAMETER["Rate of change of Y-axis rotation",0.0001, ANGLEUNIT["arc-seconds per year",1.53631468932076E-13], ID["EPSG",1044]], PARAMETER["Rate of change of Z-axis rotation",0.000192, 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",1993, TIMEUNIT["year",31556925.445], ID["EPSG",1047]], OPERATIONACCURACY[0.01], ID["INVERSE(EPSG)",12173]]], OPERATIONACCURACY[0.1], USAGE[ SCOPE["Spatial referencing."], AREA["Liechtenstein; Switzerland."], BBOX[45.81,5.95,47.81,10.5]], ID["EPSG",12172]]
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=0.0571 +y=-0.0061 +z=0.0011 +rx=0.001321 +ry=0.00375 +rz=-0.005732 +s=-0.00207 +dx=0.0029 +dy=0.0002 +dz=0.0006 +drx=-0.000129 +dry=-0.0001 +drz=-0.000192 +ds=-1e-05 +t_epoch=1993 +convention=position_vector
Definition: JavaScript (Proj4js)
proj4.defs("EPSG:12172","+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=0.0571 +y=-0.0061 +z=0.0011 +rx=0.001321 +ry=0.00375 +rz=-0.005732 +s=-0.00207 +dx=0.0029 +dy=0.0002 +dz=0.0006 +drx=-0.000129 +dry=-0.0001 +drz=-0.000192 +ds=-1e-05 +t_epoch=1993 +convention=position_vector");
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "ConcatenatedOperation", "name": "ITRF2020 to ETRS89-CHE [CHTRS95] (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). Updated through ITRF2020-u2023 from December 2024 and through ITRF2020-u2024 from October 2025. Users referencing updates should include this information in their metadata." }, "target_crs": { "type": "GeodeticCRS", "name": "ETRS89-CHE [CHTRS95]", "datum": { "type": "GeodeticReferenceFrame", "name": "Swiss Terrestrial Reference System 1995", "anchor_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": 4932 }, "remarks": "Referenced to ETRF93 at epoch 1993.0. First realized through CHTRF95 and subsequently CHTRF98, with an aim to re-measure every 6 years. CHTRF98, CHTRF2004, CHTRF2010 and CHTRF2016 are all within 2cm of CHTRF95 and used for scientific applications, but for most practical purposes differences are considered insignificant. For CRS used for topographic and cadastral purposes see CH1903+ (CRS code 4150)." }, "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). Updated through ITRF2020-u2023 from December 2024 and through ITRF2020-u2024 from October 2025. Users referencing updates should include this information in their metadata." }, "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 ETRS89-CHE [CHTRS95] to ETRF2000 (1)", "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": "ETRS89-CHE [CHTRS95]", "datum": { "type": "GeodeticReferenceFrame", "name": "Swiss Terrestrial Reference System 1995", "anchor_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": 4932 }, "remarks": "Referenced to ETRF93 at epoch 1993.0. First realized through CHTRF95 and subsequently CHTRF98, with an aim to re-measure every 6 years. CHTRF98, CHTRF2004, CHTRF2010 and CHTRF2016 are all within 2cm of CHTRF95 and used for scientific applications, but for most practical purposes differences are considered insignificant. For CRS used for topographic and cadastral purposes see CH1903+ (CRS code 4150)." }, "method": { "name": "Inverse of Time-dependent Position Vector tfm (geocentric)", "id": { "authority": "INVERSE(EPSG)", "code": 1053 } }, "parameters": [ { "name": "X-axis translation", "value": 57.1, "unit": { "type": "LinearUnit", "name": "millimetre", "conversion_factor": 0.001 }, "id": { "authority": "EPSG", "code": 8605 } }, { "name": "Y-axis translation", "value": -6.1, "unit": { "type": "LinearUnit", "name": "millimetre", "conversion_factor": 0.001 }, "id": { "authority": "EPSG", "code": 8606 } }, { "name": "Z-axis translation", "value": 1.1, "unit": { "type": "LinearUnit", "name": "millimetre", "conversion_factor": 0.001 }, "id": { "authority": "EPSG", "code": 8607 } }, { "name": "X-axis rotation", "value": 1.321, "unit": { "type": "AngularUnit", "name": "milliarc-second", "conversion_factor": 4.84813681109536e-09 }, "id": { "authority": "EPSG", "code": 8608 } }, { "name": "Y-axis rotation", "value": 3.75, "unit": { "type": "AngularUnit", "name": "milliarc-second", "conversion_factor": 4.84813681109536e-09 }, "id": { "authority": "EPSG", "code": 8609 } }, { "name": "Z-axis rotation", "value": -5.732, "unit": { "type": "AngularUnit", "name": "milliarc-second", "conversion_factor": 4.84813681109536e-09 }, "id": { "authority": "EPSG", "code": 8610 } }, { "name": "Scale difference", "value": -2.07, "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": 2.9, "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": 0.2, "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": 0.6, "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": -0.129, "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": -0.1, "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": -0.192, "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": 1993, "unit": { "type": "TimeUnit", "name": "year", "conversion_factor": 31556925.445 }, "id": { "authority": "EPSG", "code": 1047 } } ], "accuracy": "0.01", "id": { "authority": "INVERSE(EPSG)", "code": 12173 }, "remarks": "Derived from concatenation of ETRS89-CHE [CHTRS95] to ETRF93 (1) (CT code 12171) with ETRF93 to ETRF2000 (CT code 10935) reduced to epoch 1993.0. Scale difference in ppb and scale difference rate in ppb/yr where 1/billion = 1E-9 or nm/m. Accuracy is approximately 1cm at the ETRS89-CHE [CHTRS95] anchor epoch of 1993.0, but deteriorates with time due to tectonic deformation and/or glacial isostatic adjustment." } ], "accuracy": "0.1", "scope": "Spatial referencing.", "area": "Liechtenstein; Switzerland.", "bbox": { "south_latitude": 45.81, "west_longitude": 5.95, "north_latitude": 47.81, "east_longitude": 10.5 }, "id": { "authority": "EPSG", "code": 12172 } }
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=0.0571" "y=-0.0061" "z=0.0011" "rx=0.001321" "ry=0.00375" "rz=-0.005732" "s=-0.00207" "dx=0.0029" "dy=0.0002" "dz=0.0006" "drx=-0.000129" "dry=-0.0001" "drz=-0.000192" "ds=-1e-05" "t_epoch=1993" "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=0.0571 +y=-0.0061 +z=0.0011 +rx=0.001321 +ry=0.00375 +rz=-0.005732 +s=-0.00207 +dx=0.0029 +dy=0.0002 +dz=0.0006 +drx=-0.000129 +dry=-0.0001 +drz=-0.000192 +ds=-1e-05 +t_epoch=1993 +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=0.0571 +y=-0.0061 +z=0.0011 +rx=0.001321 +ry=0.00375 +rz=-0.005732 +s=-0.00207 +dx=0.0029 +dy=0.0002 +dz=0.0006 +drx=-0.000129 +dry=-0.0001 +drz=-0.000192 +ds=-1e-05 +t_epoch=1993 +convention=position_vector"> </Layer> </Map>
Definition: SQL (PostGIS)
INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 12172, 'EPSG', 12172, '+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=0.0571 +y=-0.0061 +z=0.0011 +rx=0.001321 +ry=0.00375 +rz=-0.005732 +s=-0.00207 +dx=0.0029 +dy=0.0002 +dz=0.0006 +drx=-0.000129 +dry=-0.0001 +drz=-0.000192 +ds=-1e-05 +t_epoch=1993 +convention=position_vector', 'None');
Find a coordinate system and get position on a map. Powered by EPSG database 13.102
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&stroke=red&width=2&path=45.81,5.95|47.81,5.95|47.81,10.5|45.81,10.5|45.81,5.95)