Geodetic CRS: ITRF91
Datum: International Terrestrial Reference Frame 1991
Ellipsoid: GRS 1980
Prime meridian: Greenwich
Data source: EPSG
Information source: EUREF Technical Note 1: Relationship and Transformation between the International and European Terrestrial Reference Systems, November 16, 2017.
Revision date: 2018-02-10
Scope: Geodesy.
Remarks: Scale difference in ppb and scale difference rate in ppb/yr where 1/billion = 1E-9 or nm/m.
Method: Time-dependent Position Vector tfm (geocentric)
Description: (0,)
Definition: JavaScript (Proj4js)
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Definition: JSON
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Andorra; Austria; Belgium; Bosnia and Herzegovina; Bulgaria; Croatia; Cyprus; Czechia; Denmark; Estonia; Faroe Islands; Finland; France; Germany; Gibraltar; Greece; Hungary; Ireland; Italy; Kosovo; Latvia; Liechtenstein; Lithuania; Luxembourg; Malta; Moldova; Monaco; Montenegro; Netherlands; North Macedonia; Norway including Svalbard and Jan Mayen; Poland; Portugal; Romania; San Marino; Serbia; Slovakia; Slovenia; Spain; Sweden; Switzerland; United Kingdom (UK) including Channel Islands and Isle of Man; Vatican City State.", "bbox": { "south_latitude": 32.88, "west_longitude": -16.1, "north_latitude": 84.73, "east_longitude": 40.18 }, "id": { "authority": "EPSG", "code": 8417 }, "remarks": "Scale difference in ppb and scale difference rate in ppb/yr where 1/billion = 1E-9 or nm/m." }
Definition: MapServer - MAPfile
PROJECTION "proj=helmert" "x=-0.0274" "y=-0.0155" "z=0.0768" "rx=0.001785" "ry=0.011151" "rz=-0.01643" "s=-0.00449" "dx=-0.0001" "dy=0.0005" "dz=0.0033" "drx=8.5e-05" "dry=0.000531" "drz=-0.00079" "ds=-0.00012" "t_epoch=2010" "convention=position_vector" END
Definition: Mapnik
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Definition: SQL (PostGIS)
INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 8417, 'EPSG', 8417, '+proj=helmert +x=-0.0274 +y=-0.0155 +z=0.0768 +rx=0.001785 +ry=0.011151 +rz=-0.01643 +s=-0.00449 +dx=-0.0001 +dy=0.0005 +dz=0.0033 +drx=8.5e-05 +dry=0.000531 +drz=-0.00079 +ds=-0.00012 +t_epoch=2010 +convention=position_vector', 'None');
Definition: OGC WKT 2 (2019)
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