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Geodetic CRS: NKG_ETRF14
Datum: Nordic Geodetic Commission ETRF14
Ellipsoid: GRS 1980
Prime meridian: Greenwich
Data source: EPSG
Information source: Häkli et al., "NKG2020 transformation: An updated transformation between dynamic and static reference frames in the Nordic and Baltic countries"; Journal of Geodetic Science 2023; 13: 20220155, https://doi.org/10.1515/jogs-2022-0155.
Revision date: 2025-08-24
Scope: Geodesy.
Remarks: Nordic Geodetic Commission (NKG) 2020 transformation. Replaces NKG2008 transformation. Because the difference in coordinates between NKG_ETRF14 and LKS94 is small (under a decimetre), although the interpolation CRS is given as NKG_ETRF14, any realization of ETRS89 (including ETRF2014 and LKS94) may be used as the interpolation CRS. Scale difference in ppb where 1/billion = 1E-9.
Method: Position Vector (geocen) & Geocen translations NEU velocities (gtg)
Area of use: Lithuania - onshore and offshore.
Description: (0,)
Definition: OGC Well Known Text 2 (2019)
COORDINATEOPERATION["NKG_ETRF14 to LKS94 (1)", VERSION["NKG2020"], SOURCECRS[ GEODCRS["NKG_ETRF14", DATUM["Nordic Geodetic Commission ETRF14", ELLIPSOID["GRS 1980",6378137,298.257222101, LENGTHUNIT["metre",1]], ANCHOREPOCH[2000]], 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",10805]]], TARGETCRS[ GEODCRS["LKS94", DATUM["Lithuania 1994 (ETRS89)", 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",4950]]], METHOD["Position Vector (geocen) & Geocen translations NEU velocities (gtg)", ID["EPSG",1143]], PARAMETER["X-axis translation",0.36749, LENGTHUNIT["metre",1], ID["EPSG",8605]], PARAMETER["Y-axis translation",0.14351, LENGTHUNIT["metre",1], ID["EPSG",8606]], PARAMETER["Z-axis translation",-0.18472, LENGTHUNIT["metre",1], ID["EPSG",8607]], PARAMETER["X-axis rotation",4.7914, ANGLEUNIT["milliarc-second",4.84813681109536E-09], ID["EPSG",8608]], PARAMETER["Y-axis rotation",-10.27566, ANGLEUNIT["milliarc-second",4.84813681109536E-09], ID["EPSG",8609]], PARAMETER["Z-axis rotation",2.76102, ANGLEUNIT["milliarc-second",4.84813681109536E-09], ID["EPSG",8610]], PARAMETER["Scale difference",-3.684, SCALEUNIT["parts per billion",1E-09], ID["EPSG",8611]], PARAMETER["Source epoch",2000, TIMEUNIT["year",31556925.445], ID["EPSG",1068]], PARAMETER["Target epoch",2003.75, TIMEUNIT["year",31556925.445], ID["EPSG",1069]], PARAMETERFILE["Point motion velocity grid file","NKG_RF17vel.tif"], INTERPOLATIONCRS[ GEOGCRS["NKG_ETRF14", DATUM["Nordic Geodetic Commission ETRF14", ELLIPSOID["GRS 1980",6378137,298.257222101, LENGTHUNIT["metre",1]], ANCHOREPOCH[2000]], PRIMEM["Greenwich",0, ANGLEUNIT["degree",0.0174532925199433]], CS[ellipsoidal,2], AXIS["geodetic latitude (Lat)",north, ORDER[1], ANGLEUNIT["degree",0.0174532925199433]], AXIS["geodetic longitude (Lon)",east, ORDER[2], ANGLEUNIT["degree",0.0174532925199433]]]], OPERATIONACCURACY[0.008], USAGE[ SCOPE["Geodesy."], AREA["Lithuania - onshore and offshore."], BBOX[53.89,19.02,56.45,26.82]], ID["EPSG",10812], REMARK["Nordic Geodetic Commission (NKG) 2020 transformation. Replaces NKG2008 transformation. Because the difference in coordinates between NKG_ETRF14 and LKS94 is small (under a decimetre), although the interpolation CRS is given as NKG_ETRF14, any realization of ETRS89 (including ETRF2014 and LKS94) may be used as the interpolation CRS. Scale difference in ppb where 1/billion = 1E-9."]]
Definition: JavaScript (Proj4js)
proj4.defs("EPSG:10812","+proj=pipeline +step +proj=helmert +x=0.36749 +y=0.14351 +z=-0.18472 +rx=0.0047914 +ry=-0.01027566 +rz=0.00276102 +s=-0.003684 +convention=position_vector +step +proj=deformation +dt=3.75 +grids=eur_nkg_nkgrf17vel.tif +ellps=GRS80");
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "Transformation", "name": "NKG_ETRF14 to LKS94 (1)", "source_crs": { "type": "GeodeticCRS", "name": "NKG_ETRF14", "datum": { "type": "GeodeticReferenceFrame", "name": "Nordic Geodetic Commission ETRF14", "anchor_epoch": 2000, "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": 10805 } }, "target_crs": { "type": "GeodeticCRS", "name": "LKS94", "datum": { "type": "GeodeticReferenceFrame", "name": "Lithuania 1994 (ETRS89)", "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": 4950 } }, "interpolation_crs": { "type": "GeographicCRS", "name": "NKG_ETRF14", "datum": { "type": "GeodeticReferenceFrame", "name": "Nordic Geodetic Commission ETRF14", "anchor_epoch": 2000, "ellipsoid": { "name": "GRS 1980", "semi_major_axis": 6378137, "inverse_flattening": 298.257222101 } }, "coordinate_system": { "subtype": "ellipsoidal", "axis": [ { "name": "Geodetic latitude", "abbreviation": "Lat", "direction": "north", "unit": "degree" }, { "name": "Geodetic longitude", "abbreviation": "Lon", "direction": "east", "unit": "degree" } ] }, "id": { "authority": "EPSG", "code": 10807 } }, "method": { "name": "Position Vector (geocen) & Geocen translations NEU velocities (gtg)", "id": { "authority": "EPSG", "code": 1143 } }, "parameters": [ { "name": "X-axis translation", "value": 0.36749, "unit": "metre", "id": { "authority": "EPSG", "code": 8605 } }, { "name": "Y-axis translation", "value": 0.14351, "unit": "metre", "id": { "authority": "EPSG", "code": 8606 } }, { "name": "Z-axis translation", "value": -0.18472, "unit": "metre", "id": { "authority": "EPSG", "code": 8607 } }, { "name": "X-axis rotation", "value": 4.7914, "unit": { "type": "AngularUnit", "name": "milliarc-second", "conversion_factor": 4.84813681109536e-09 }, "id": { "authority": "EPSG", "code": 8608 } }, { "name": "Y-axis rotation", "value": -10.27566, "unit": { "type": "AngularUnit", "name": "milliarc-second", "conversion_factor": 4.84813681109536e-09 }, "id": { "authority": "EPSG", "code": 8609 } }, { "name": "Z-axis rotation", "value": 2.76102, "unit": { "type": "AngularUnit", "name": "milliarc-second", "conversion_factor": 4.84813681109536e-09 }, "id": { "authority": "EPSG", "code": 8610 } }, { "name": "Scale difference", "value": -3.684, "unit": { "type": "ScaleUnit", "name": "parts per billion", "conversion_factor": 1e-09 }, "id": { "authority": "EPSG", "code": 8611 } }, { "name": "Source epoch", "value": 2000, "unit": { "type": "TimeUnit", "name": "year", "conversion_factor": 31556925.445 }, "id": { "authority": "EPSG", "code": 1068 } }, { "name": "Target epoch", "value": 2003.75, "unit": { "type": "TimeUnit", "name": "year", "conversion_factor": 31556925.445 }, "id": { "authority": "EPSG", "code": 1069 } }, { "name": "Point motion velocity grid file", "value": "NKG_RF17vel.tif", "id": { "authority": "EPSG", "code": 1050 } } ], "accuracy": "0.008", "scope": "Geodesy.", "area": "Lithuania - onshore and offshore.", "bbox": { "south_latitude": 53.89, "west_longitude": 19.02, "north_latitude": 56.45, "east_longitude": 26.82 }, "id": { "authority": "EPSG", "code": 10812 }, "remarks": "Nordic Geodetic Commission (NKG) 2020 transformation. Replaces NKG2008 transformation. Because the difference in coordinates between NKG_ETRF14 and LKS94 is small (under a decimetre), although the interpolation CRS is given as NKG_ETRF14, any realization of ETRS89 (including ETRF2014 and LKS94) may be used as the interpolation CRS. Scale difference in ppb where 1/billion = 1E-9." }
Definition: MapServer - MAPfile
PROJECTION "proj=pipeline" "step" "proj=helmert" "x=0.36749" "y=0.14351" "z=-0.18472" "rx=0.0047914" "ry=-0.01027566" "rz=0.00276102" "s=-0.003684" "convention=position_vector" "step" "proj=deformation" "dt=3.75" "grids=eur_nkg_nkgrf17vel.tif" "ellps=GRS80" END
Definition: Mapnik
<?xml version="1.0" encoding="utf-8"?> <Map srs="+proj=pipeline +step +proj=helmert +x=0.36749 +y=0.14351 +z=-0.18472 +rx=0.0047914 +ry=-0.01027566 +rz=0.00276102 +s=-0.003684 +convention=position_vector +step +proj=deformation +dt=3.75 +grids=eur_nkg_nkgrf17vel.tif +ellps=GRS80"> <Layer srs="+proj=pipeline +step +proj=helmert +x=0.36749 +y=0.14351 +z=-0.18472 +rx=0.0047914 +ry=-0.01027566 +rz=0.00276102 +s=-0.003684 +convention=position_vector +step +proj=deformation +dt=3.75 +grids=eur_nkg_nkgrf17vel.tif +ellps=GRS80"> </Layer> </Map>
Definition: SQL (PostGIS)
INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 10812, 'EPSG', 10812, '+proj=pipeline +step +proj=helmert +x=0.36749 +y=0.14351 +z=-0.18472 +rx=0.0047914 +ry=-0.01027566 +rz=0.00276102 +s=-0.003684 +convention=position_vector +step +proj=deformation +dt=3.75 +grids=eur_nkg_nkgrf17vel.tif +ellps=GRS80', 'None');
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