International Terrestrial Reference Frame 1991
EPSG
International Earth Rotation Service (IERS) Technical Note 15.
2022-07-21
Geodesy.
Scale difference in ppb and scale difference rate in ppb/yr where 1/billion = 1E-9 or nm/m. Superseded by parameter values derived from transformations to ITRF2020 (change in tX), see EPSG:10142.
Position Vector transformation (geocentric domain)
(0,)
Definition: OGC Well Known Text 2 (2019)
COORDINATEOPERATION["ITRF91 to ITRF92 (1)", VERSION["IERS-Wld"], SOURCECRS[ GEODCRS["ITRF91", DYNAMIC[ FRAMEEPOCH[1988]], DATUM["International Terrestrial Reference Frame 1991", 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",4913]]], TARGETCRS[ GEODCRS["ITRF92", DYNAMIC[ FRAMEEPOCH[1988]], DATUM["International Terrestrial Reference Frame 1992", 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",4914]]], METHOD["Position Vector transformation (geocentric domain)", ID["EPSG",1033]], PARAMETER["X-axis translation",-1.1, LENGTHUNIT["centimetre",0.01], ID["EPSG",8605]], PARAMETER["Y-axis translation",-1.4, LENGTHUNIT["centimetre",0.01], ID["EPSG",8606]], PARAMETER["Z-axis translation",0.6, LENGTHUNIT["centimetre",0.01], 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",-1.4, SCALEUNIT["parts per billion",1E-09], ID["EPSG",8611]], OPERATIONACCURACY[0.005], USAGE[ SCOPE["Geodesy."], AREA["World."], BBOX[-90,-180,90,180]], ID["EPSG",9023], REMARK["Scale difference in ppb and scale difference rate in ppb/yr where 1/billion = 1E-9 or nm/m. Superseded by parameter values derived from transformations to ITRF2020 (change in tX), see EPSG:10142."]]
Definition: JSON
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Definition: Mapnik
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