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Geodetic CRS: ITRF2000
Datum: International Terrestrial Reference Frame 2000
Ellipsoid: GRS 1980
Prime meridian: Greenwich
Data source: EPSG
Information source: Soler and Snay "Transforming Positions and Velocities between the International Terrestrial Reference Frame of 2000 and the North American Datum of 1983", Journal of Survey Engineering, May 2004.
Revision date: 2023-07-17
Scope: Geodesy. Defines NAD83(CSRS)v4.
Remarks: Concatenation of joint Canada-US NAD83>ITRF96 tfm (code 8259) with IGS value of ITRF96>ITRF97 and IERS tfm ITRF97>ITRF2000. Scale difference in ppb and scale difference rate in ppb/yr where 1/billion = 1E-9 or nm/m. See tfm code 6866 for US equivalent.
Method: Time-dependent Position Vector tfm (geocentric)
Description: (0,)
Definition: OGC Well Known Text 2 (2019)
COORDINATEOPERATION["ITRF2000 to NAD83(CSRS)v4 (1)", VERSION["NRC-Can CSRSv4"], SOURCECRS[ GEODCRS["ITRF2000", DYNAMIC[ FRAMEEPOCH[1997]], DATUM["International 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",4919]]], TARGETCRS[ GEODCRS["NAD83(CSRS)v4", DATUM["North American Datum of 1983 (CSRS) version 4", 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",8242]]], METHOD["Time-dependent Position Vector tfm (geocentric)", ID["EPSG",1053]], PARAMETER["X-axis translation",0.9956, LENGTHUNIT["metre",1], ID["EPSG",8605]], PARAMETER["Y-axis translation",-1.9013, LENGTHUNIT["metre",1], ID["EPSG",8606]], PARAMETER["Z-axis translation",-0.5214, LENGTHUNIT["metre",1], ID["EPSG",8607]], PARAMETER["X-axis rotation",-25.915, ANGLEUNIT["milliarc-second",4.84813681109536E-09], ID["EPSG",8608]], PARAMETER["Y-axis rotation",-9.426, ANGLEUNIT["milliarc-second",4.84813681109536E-09], ID["EPSG",8609]], PARAMETER["Z-axis rotation",-11.599, ANGLEUNIT["milliarc-second",4.84813681109536E-09], ID["EPSG",8610]], PARAMETER["Scale difference",0.615, SCALEUNIT["parts per billion",1E-09], ID["EPSG",8611]], PARAMETER["Rate of change of X-axis translation",0.0007, LENGTHUNIT["metres per year",3.16887651727315E-08], ID["EPSG",1040]], PARAMETER["Rate of change of Y-axis translation",-0.0007, LENGTHUNIT["metres per year",3.16887651727315E-08], ID["EPSG",1041]], PARAMETER["Rate of change of Z-axis translation",0.0005, LENGTHUNIT["metres per year",3.16887651727315E-08], ID["EPSG",1042]], PARAMETER["Rate of change of X-axis rotation",-0.067, ANGLEUNIT["milliarc-seconds per year",1.53631468932076E-16], ID["EPSG",1043]], PARAMETER["Rate of change of Y-axis rotation",0.757, ANGLEUNIT["milliarc-seconds per year",1.53631468932076E-16], ID["EPSG",1044]], PARAMETER["Rate of change of Z-axis rotation",0.051, ANGLEUNIT["milliarc-seconds per year",1.53631468932076E-16], ID["EPSG",1045]], PARAMETER["Rate of change of Scale difference",-0.182, SCALEUNIT["parts per billion per year",3.16887651727315E-17], ID["EPSG",1046]], PARAMETER["Parameter reference epoch",1997, TIMEUNIT["year",31556925.445], ID["EPSG",1047]], OPERATIONACCURACY[0.0], USAGE[ SCOPE["Geodesy. Defines NAD83(CSRS)v4."], AREA["Canada - onshore and offshore - Alberta; British Columbia; Manitoba; New Brunswick; Newfoundland and Labrador; Northwest Territories; Nova Scotia; Nunavut; Ontario; Prince Edward Island; Quebec; Saskatchewan; Yukon."], BBOX[38.21,-141.01,86.46,-40.73]], ID["EPSG",8261], REMARK["Concatenation of joint Canada-US NAD83>ITRF96 tfm (code 8259) with IGS value of ITRF96>ITRF97 and IERS tfm ITRF97>ITRF2000. Scale difference in ppb and scale difference rate in ppb/yr where 1/billion = 1E-9 or nm/m. See tfm code 6866 for US equivalent."]]
Definition: JavaScript (Proj4js)
proj4.defs("EPSG:8261","+proj=helmert +x=0.9956 +y=-1.9013 +z=-0.5214 +rx=-0.025915 +ry=-0.009426 +rz=-0.011599 +s=0.000615 +dx=0.0007 +dy=-0.0007 +dz=0.0005 +drx=-6.7e-05 +dry=0.000757 +drz=5.1e-05 +ds=-0.000182 +t_epoch=1997 +convention=position_vector");
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "Transformation", "name": "ITRF2000 to NAD83(CSRS)v4 (1)", "source_crs": { "type": "GeodeticCRS", "name": "ITRF2000", "datum": { "type": "DynamicGeodeticReferenceFrame", "name": "International Terrestrial Reference Frame 2000", "frame_reference_epoch": 1997, "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": 4919 } }, "target_crs": { "type": "GeodeticCRS", "name": "NAD83(CSRS)v4", "datum": { "type": "GeodeticReferenceFrame", "name": "North American Datum of 1983 (CSRS) version 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": 8242 } }, "method": { "name": "Time-dependent Position Vector tfm (geocentric)", "id": { "authority": "EPSG", "code": 1053 } }, "parameters": [ { "name": "X-axis translation", "value": 0.9956, "unit": "metre", "id": { "authority": "EPSG", "code": 8605 } }, { "name": "Y-axis translation", "value": -1.9013, "unit": "metre", "id": { "authority": "EPSG", "code": 8606 } }, { "name": "Z-axis translation", "value": -0.5214, "unit": "metre", "id": { "authority": "EPSG", "code": 8607 } }, { "name": "X-axis rotation", "value": -25.915, "unit": { "type": "AngularUnit", "name": "milliarc-second", "conversion_factor": 4.84813681109536e-09 }, "id": { "authority": "EPSG", "code": 8608 } }, { "name": "Y-axis rotation", "value": -9.426, "unit": { "type": "AngularUnit", "name": "milliarc-second", "conversion_factor": 4.84813681109536e-09 }, "id": { "authority": "EPSG", "code": 8609 } }, { "name": "Z-axis rotation", "value": -11.599, "unit": { "type": "AngularUnit", "name": "milliarc-second", "conversion_factor": 4.84813681109536e-09 }, "id": { "authority": "EPSG", "code": 8610 } }, { "name": "Scale difference", "value": 0.615, "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": 0.0007, "unit": { "type": "LinearUnit", "name": "metres per year", "conversion_factor": 3.16887651727315e-08 }, "id": { "authority": "EPSG", "code": 1040 } }, { "name": "Rate of change of Y-axis translation", "value": -0.0007, "unit": { "type": "LinearUnit", "name": "metres per year", "conversion_factor": 3.16887651727315e-08 }, "id": { "authority": "EPSG", "code": 1041 } }, { "name": "Rate of change of Z-axis translation", "value": 0.0005, "unit": { "type": "LinearUnit", "name": "metres per year", "conversion_factor": 3.16887651727315e-08 }, "id": { "authority": "EPSG", "code": 1042 } }, { "name": "Rate of change of X-axis rotation", "value": -0.067, "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": 0.757, "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": 0.051, "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": -0.182, "unit": { "type": "ScaleUnit", "name": "parts per billion per year", "conversion_factor": 3.16887651727315e-17 }, "id": { "authority": "EPSG", "code": 1046 } }, { "name": "Parameter reference epoch", "value": 1997, "unit": { "type": "TimeUnit", "name": "year", "conversion_factor": 31556925.445 }, "id": { "authority": "EPSG", "code": 1047 } } ], "accuracy": "0.0", "scope": "Geodesy. Defines NAD83(CSRS)v4.", "area": "Canada - onshore and offshore - Alberta; British Columbia; Manitoba; New Brunswick; Newfoundland and Labrador; Northwest Territories; Nova Scotia; Nunavut; Ontario; Prince Edward Island; Quebec; Saskatchewan; Yukon.", "bbox": { "south_latitude": 38.21, "west_longitude": -141.01, "north_latitude": 86.46, "east_longitude": -40.73 }, "id": { "authority": "EPSG", "code": 8261 }, "remarks": "Concatenation of joint Canada-US NAD83>ITRF96 tfm (code 8259) with IGS value of ITRF96>ITRF97 and IERS tfm ITRF97>ITRF2000. Scale difference in ppb and scale difference rate in ppb/yr where 1/billion = 1E-9 or nm/m. See tfm code 6866 for US equivalent." }
Definition: MapServer - MAPfile
PROJECTION "proj=helmert" "x=0.9956" "y=-1.9013" "z=-0.5214" "rx=-0.025915" "ry=-0.009426" "rz=-0.011599" "s=0.000615" "dx=0.0007" "dy=-0.0007" "dz=0.0005" "drx=-6.7e-05" "dry=0.000757" "drz=5.1e-05" "ds=-0.000182" "t_epoch=1997" "convention=position_vector" END
Definition: Mapnik
<?xml version="1.0" encoding="utf-8"?> <Map srs="+proj=helmert +x=0.9956 +y=-1.9013 +z=-0.5214 +rx=-0.025915 +ry=-0.009426 +rz=-0.011599 +s=0.000615 +dx=0.0007 +dy=-0.0007 +dz=0.0005 +drx=-6.7e-05 +dry=0.000757 +drz=5.1e-05 +ds=-0.000182 +t_epoch=1997 +convention=position_vector"> <Layer srs="+proj=helmert +x=0.9956 +y=-1.9013 +z=-0.5214 +rx=-0.025915 +ry=-0.009426 +rz=-0.011599 +s=0.000615 +dx=0.0007 +dy=-0.0007 +dz=0.0005 +drx=-6.7e-05 +dry=0.000757 +drz=5.1e-05 +ds=-0.000182 +t_epoch=1997 +convention=position_vector"> </Layer> </Map>
Definition: SQL (PostGIS)
INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 8261, 'EPSG', 8261, '+proj=helmert +x=0.9956 +y=-1.9013 +z=-0.5214 +rx=-0.025915 +ry=-0.009426 +rz=-0.011599 +s=0.000615 +dx=0.0007 +dy=-0.0007 +dz=0.0005 +drx=-6.7e-05 +dry=0.000757 +drz=5.1e-05 +ds=-0.000182 +t_epoch=1997 +convention=position_vector', 'None');
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