EPSG:11477

COORDINATEOPERATION["SIRGAS-Chile 2025 to IGS20 (1)",
    VERSION["IOGP-Chl"],
    SOURCECRS[
        GEODCRS["SIRGAS-Chile 2025",
            DATUM["SIRGAS-Chile 2025",
                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",11471]]],
    TARGETCRS[
        GEODCRS["IGS20",
            DYNAMIC[
                FRAMEEPOCH[2015]],
            DATUM["IGS20",
                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",10176]]],
    METHOD["Time-specific Position Vector transform (geocen)",
        ID["EPSG",1065]],
    PARAMETER["X-axis translation",0,
        LENGTHUNIT["millimetre",0.001],
        ID["EPSG",8605]],
    PARAMETER["Y-axis translation",0,
        LENGTHUNIT["millimetre",0.001],
        ID["EPSG",8606]],
    PARAMETER["Z-axis translation",0,
        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,
        ANGLEUNIT["milliarc-second",4.84813681109536E-09],
        ID["EPSG",8610]],
    PARAMETER["Scale difference",0,
        SCALEUNIT["parts per million",1E-06],
        ID["EPSG",8611]],
    PARAMETER["Transformation reference epoch",2025,
        TIMEUNIT["year",31556925.445],
        ID["EPSG",1049]],
    OPERATIONACCURACY[0.1],
    USAGE[
        SCOPE["Geodesy."],
        AREA["Chile - onshore and offshore. Includes Easter Island, Juan Fernandez Islands, San Felix, and Sala y Gomez."],
        BBOX[-59.87,-113.21,-17.5,-65.72]],
    ID["EPSG",11477],
    REMARK["Transformation is exact at epoch 2025.00 but accuracy then decreasing with time."]]

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "Transformation",
    "name": "SIRGAS-Chile 2025 to IGS20 (1)",
    "source_crs": {
        "type": "GeodeticCRS",
        "name": "SIRGAS-Chile 2025",
        "datum": {
            "type": "GeodeticReferenceFrame",
            "name": "SIRGAS-Chile 2025",
            "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": 11471
        },
        "remarks": "Densification of SIRGAS-CON within Chile at epoch 2025.00. Replaces SIRGAS-Chile 2021 (CRS code 20039) due to significant tectonic deformation."
    },
    "target_crs": {
        "type": "GeodeticCRS",
        "name": "IGS20",
        "datum": {
            "type": "DynamicGeodeticReferenceFrame",
            "name": "IGS20",
            "frame_reference_epoch": 2015,
            "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": 10176
        },
        "remarks": "For most practical purposes IGS20 is equivalent to ITRF2020. Replaces IGb14 (code 9378). Used for products from the International GNSS Service (IGS) from 2022-11-27: IGS20 used from 2022-11-27 to 2025-02-01 (GPS weeks 2238 through 2351); IGb20 (extract from ITRF2020-u2023) used from 2025-02-02 to 2026-01-10 (GPS weeks 2352 through 2400); IGc20 used from 2026-01-11 (GPS week 2401). Users referencing updates should include this information in their metadata."
    },
    "method": {
        "name": "Time-specific Position Vector transform (geocen)",
        "id": {
            "authority": "EPSG",
            "code": 1065
        }
    },
    "parameters": [
        {
            "name": "X-axis translation",
            "value": 0,
            "unit": {
                "type": "LinearUnit",
                "name": "millimetre",
                "conversion_factor": 0.001
            },
            "id": {
                "authority": "EPSG",
                "code": 8605
            }
        },
        {
            "name": "Y-axis translation",
            "value": 0,
            "unit": {
                "type": "LinearUnit",
                "name": "millimetre",
                "conversion_factor": 0.001
            },
            "id": {
                "authority": "EPSG",
                "code": 8606
            }
        },
        {
            "name": "Z-axis translation",
            "value": 0,
            "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,
            "unit": {
                "type": "AngularUnit",
                "name": "milliarc-second",
                "conversion_factor": 4.84813681109536e-09
            },
            "id": {
                "authority": "EPSG",
                "code": 8610
            }
        },
        {
            "name": "Scale difference",
            "value": 0,
            "unit": {
                "type": "ScaleUnit",
                "name": "parts per million",
                "conversion_factor": 1e-06
            },
            "id": {
                "authority": "EPSG",
                "code": 8611
            }
        },
        {
            "name": "Transformation reference epoch",
            "value": 2025,
            "unit": {
                "type": "TimeUnit",
                "name": "year",
                "conversion_factor": 31556925.445
            },
            "id": {
                "authority": "EPSG",
                "code": 1049
            }
        }
    ],
    "accuracy": "0.1",
    "scope": "Geodesy.",
    "area": "Chile - onshore and offshore. Includes Easter Island, Juan Fernandez Islands, San Felix, and Sala y Gomez.",
    "bbox": {
        "south_latitude": -59.87,
        "west_longitude": -113.21,
        "north_latitude": -17.5,
        "east_longitude": -65.72
    },
    "id": {
        "authority": "EPSG",
        "code": 11477
    },
    "remarks": "Transformation is exact at epoch 2025.00 but accuracy then decreasing with time."
}

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 11477, 'EPSG', 11477, 'None', 'None');