EPSG:6294

ITRF91 to ITRF2008 (1)

Attributes

Geodetic CRS: ITRF91

Datum: International Terrestrial Reference Frame 1991

Ellipsoid: GRS 1980

Prime meridian: Greenwich

Data source: EPSG

Information source: International Earth Rotation Service (IERS) Technical Note 36, Conventions(2010). Also http://itrf.ensg.ign.fr

Revision date: 2019-05-17

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)

Area of use: World.

Description: (0,)

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Definition: PROJ.4

+proj=helmert +x=-0.0248 +y=-0.0186 +z=0.0472 +rx=0 +ry=0 +rz=-6e-05 +s=-0.00361 +dx=-0.0001 +dy=0.0005 +dz=0.0032 +drx=0 +dry=0 +drz=-2e-05 +ds=-9e-05 +t_epoch=2000 +convention=position_vector

Definition: JavaScript (Proj4js) 

proj4.defs("EPSG:6294","+proj=helmert +x=-0.0248 +y=-0.0186 +z=0.0472 +rx=0 +ry=0 +rz=-6e-05 +s=-0.00361 +dx=-0.0001 +dy=0.0005 +dz=0.0032 +drx=0 +dry=0 +drz=-2e-05 +ds=-9e-05 +t_epoch=2000 +convention=position_vector");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.4/projjson.schema.json",
    "type": "Transformation",
    "name": "ITRF91 to ITRF2008 (1)",
    "source_crs": {
        "type": "GeodeticCRS",
        "name": "ITRF91",
        "datum": {
            "type": "DynamicGeodeticReferenceFrame",
            "name": "International Terrestrial Reference Frame 1991",
            "frame_reference_epoch": 1988,
            "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": 4913
        }
    },
    "target_crs": {
        "type": "GeodeticCRS",
        "name": "ITRF2008",
        "datum": {
            "type": "DynamicGeodeticReferenceFrame",
            "name": "International Terrestrial Reference Frame 2008",
            "frame_reference_epoch": 2005,
            "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": 5332
        }
    },
    "method": {
        "name": "Time-dependent Position Vector tfm (geocentric)",
        "id": {
            "authority": "EPSG",
            "code": 1053
        }
    },
    "parameters": [
        {
            "name": "X-axis translation",
            "value": -24.8,
            "unit": {
                "type": "LinearUnit",
                "name": "millimetre",
                "conversion_factor": 0.001
            },
            "id": {
                "authority": "EPSG",
                "code": 8605
            }
        },
        {
            "name": "Y-axis translation",
            "value": -18.6,
            "unit": {
                "type": "LinearUnit",
                "name": "millimetre",
                "conversion_factor": 0.001
            },
            "id": {
                "authority": "EPSG",
                "code": 8606
            }
        },
        {
            "name": "Z-axis translation",
            "value": 47.2,
            "unit": {
                "type": "LinearUnit",
                "name": "millimetre",
                "conversion_factor": 0.001
            },
            "id": {
                "authority": "EPSG",
                "code": 8607
            }
        },
        {
            "name": "X-axis rotation",
            "value": 0,
            "unit": {
                "type": "AngularUnit",
                "name": "milliarc-second",
                "conversion_factor": 4.84813681109536e-09
            },
            "id": {
                "authority": "EPSG",
                "code": 8608
            }
        },
        {
            "name": "Y-axis rotation",
            "value": 0,
            "unit": {
                "type": "AngularUnit",
                "name": "milliarc-second",
                "conversion_factor": 4.84813681109536e-09
            },
            "id": {
                "authority": "EPSG",
                "code": 8609
            }
        },
        {
            "name": "Z-axis rotation",
            "value": -0.06,
            "unit": {
                "type": "AngularUnit",
                "name": "milliarc-second",
                "conversion_factor": 4.84813681109536e-09
            },
            "id": {
                "authority": "EPSG",
                "code": 8610
            }
        },
        {
            "name": "Scale difference",
            "value": -3.61,
            "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": 0.5,
            "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": 3.2,
            "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,
            "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,
            "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": -0.02,
            "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": -0.09,
            "unit": {
                "type": "ScaleUnit",
                "name": "parts per billion per year",
                "conversion_factor": 3.16887651727315e-17
            },
            "id": {
                "authority": "EPSG",
                "code": 1046
            }
        },
        {
            "name": "Parameter reference epoch",
            "value": 2000,
            "unit": {
                "type": "TimeUnit",
                "name": "year",
                "conversion_factor": 31556925.445
            },
            "id": {
                "authority": "EPSG",
                "code": 1047
            }
        }
    ],
    "accuracy": "0.01",
    "scope": "Geodesy.",
    "area": "World.",
    "bbox": {
        "south_latitude": -90,
        "west_longitude": -180,
        "north_latitude": 90,
        "east_longitude": 180
    },
    "id": {
        "authority": "EPSG",
        "code": 6294
    },
    "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=-0.0248"
	"y=-0.0186"
	"z=0.0472"
	"rx=0"
	"ry=0"
	"rz=-6e-05"
	"s=-0.00361"
	"dx=-0.0001"
	"dy=0.0005"
	"dz=0.0032"
	"drx=0"
	"dry=0"
	"drz=-2e-05"
	"ds=-9e-05"
	"t_epoch=2000"
	"convention=position_vector"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=helmert +x=-0.0248 +y=-0.0186 +z=0.0472 +rx=0 +ry=0 +rz=-6e-05 +s=-0.00361 +dx=-0.0001 +dy=0.0005 +dz=0.0032 +drx=0 +dry=0 +drz=-2e-05 +ds=-9e-05 +t_epoch=2000 +convention=position_vector">
	<Layer srs="+proj=helmert +x=-0.0248 +y=-0.0186 +z=0.0472 +rx=0 +ry=0 +rz=-6e-05 +s=-0.00361 +dx=-0.0001 +dy=0.0005 +dz=0.0032 +drx=0 +dry=0 +drz=-2e-05 +ds=-9e-05 +t_epoch=2000 +convention=position_vector">
	</Layer>
</Map>

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 6294, 'EPSG', 6294, '+proj=helmert +x=-0.0248 +y=-0.0186 +z=0.0472 +rx=0 +ry=0 +rz=-6e-05 +s=-0.00361 +dx=-0.0001 +dy=0.0005 +dz=0.0032 +drx=0 +dry=0 +drz=-2e-05 +ds=-9e-05 +t_epoch=2000 +convention=position_vector', 'None');

Definition: OGC WKT 2 (2019)

COORDINATEOPERATION["ITRF91 to ITRF2008 (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["ITRF2008",DYNAMIC[FRAMEEPOCH[2005]],DATUM["International Terrestrial Reference Frame 2008",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",5332]]],METHOD["Time-dependent Position Vector tfm (geocentric)",ID["EPSG",1053]],PARAMETER["X-axis translation",-24.8,LENGTHUNIT["millimetre",0.001],ID["EPSG",8605]],PARAMETER["Y-axis translation",-18.6,LENGTHUNIT["millimetre",0.001],ID["EPSG",8606]],PARAMETER["Z-axis translation",47.2,LENGTHUNIT["millimetre",0.001],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",-0.06,ANGLEUNIT["milliarc-second",4.84813681109536E-09],ID["EPSG",8610]],PARAMETER["Scale difference",-3.61,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",0.5,LENGTHUNIT["millimetres per year",3.16887651727315E-11],ID["EPSG",1041]],PARAMETER["Rate of change of Z-axis translation",3.2,LENGTHUNIT["millimetres per year",3.16887651727315E-11],ID["EPSG",1042]],PARAMETER["Rate of change of X-axis rotation",0,ANGLEUNIT["milliarc-seconds per year",1.53631468932076E-16],ID["EPSG",1043]],PARAMETER["Rate of change of Y-axis rotation",0,ANGLEUNIT["milliarc-seconds per year",1.53631468932076E-16],ID["EPSG",1044]],PARAMETER["Rate of change of Z-axis rotation",-0.02,ANGLEUNIT["milliarc-seconds per year",1.53631468932076E-16],ID["EPSG",1045]],PARAMETER["Rate of change of Scale difference",-0.09,SCALEUNIT["parts per billion per year",3.16887651727315E-17],ID["EPSG",1046]],PARAMETER["Parameter reference epoch",2000,TIMEUNIT["year",31556925.445],ID["EPSG",1047]],OPERATIONACCURACY[0.01],USAGE[SCOPE["Geodesy."],AREA["World."],BBOX[-90,-180,90,180]],ID["EPSG",6294],REMARK["Scale difference in ppb and scale difference rate in ppb/yr where 1/billion = 1E-9 or nm/m."]]