EPSG:8581

PSD93 to WGS 84 (2)

Attributes

Geodetic CRS: PSD93

Datum: PDO Survey Datum 1993

Ellipsoid: Clarke 1880 (RGS)

Prime meridian: Greenwich

Data source: EPSG

Information source: Petroleum Development Oman

Revision date: 2020-03-14

Steps of transformation: 1616 1237

Scope: Oil and gas exploration and production.

Remarks: Replaced by PSD93 to WGS 84 (1) (code 1439) in 1997. Can be implemented as a position vector tfm with parameter values dX= -182.046 dY= -225.604 dZ=+173.384m rX= -0.616 rY= -1.655 rZ=+8.378" dS=16.8673ppm.

Area of use: Oman - onshore. Includes Musandam and the Kuria Muria (Al Hallaniyah) islands.

Description: (0,)

MapTiler banner

Definition: OGC Well Known Text 2 (2019)

CONCATENATEDOPERATION["PSD93 to WGS 84 (2)",
    VERSION["PDO-Omn 93"],
    SOURCECRS[
        GEOGCRS["PSD93",
            DATUM["PDO Survey Datum 1993",
                ELLIPSOID["Clarke 1880 (RGS)",6378249.145,293.465,
                    LENGTHUNIT["metre",1]]],
            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]],
            ID["EPSG",4134]]],
    TARGETCRS[
        GEOGCRS["WGS 84",
            ENSEMBLE["World Geodetic System 1984 ensemble",
                MEMBER["World Geodetic System 1984 (Transit)"],
                MEMBER["World Geodetic System 1984 (G730)"],
                MEMBER["World Geodetic System 1984 (G873)"],
                MEMBER["World Geodetic System 1984 (G1150)"],
                MEMBER["World Geodetic System 1984 (G1674)"],
                MEMBER["World Geodetic System 1984 (G1762)"],
                MEMBER["World Geodetic System 1984 (G2139)"],
                ELLIPSOID["WGS 84",6378137,298.257223563,
                    LENGTHUNIT["metre",1]],
                ENSEMBLEACCURACY[2.0]],
            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]],
            ID["EPSG",4326]]],
    STEP[
        COORDINATEOPERATION["PSD93 to WGS 72 (1)",
            VERSION["PDO-Omn 93"],
            SOURCECRS[
                GEOGCRS["PSD93",
                    DATUM["PDO Survey Datum 1993",
                        ELLIPSOID["Clarke 1880 (RGS)",6378249.145,293.465,
                            LENGTHUNIT["metre",1]]],
                    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]],
                    ID["EPSG",4134]]],
            TARGETCRS[
                GEOGCRS["WGS 72",
                    DYNAMIC[
                        FRAMEEPOCH[1972]],
                    DATUM["World Geodetic System 1972",
                        ELLIPSOID["WGS 72",6378135,298.26,
                            LENGTHUNIT["metre",1]]],
                    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]],
                    ID["EPSG",4322]]],
            METHOD["Position Vector transformation (geog2D domain)",
                ID["EPSG",9606]],
            PARAMETER["X-axis translation",-182.046,
                LENGTHUNIT["metre",1],
                ID["EPSG",8605]],
            PARAMETER["Y-axis translation",-225.604,
                LENGTHUNIT["metre",1],
                ID["EPSG",8606]],
            PARAMETER["Z-axis translation",168.884,
                LENGTHUNIT["metre",1],
                ID["EPSG",8607]],
            PARAMETER["X-axis rotation",-0.616,
                ANGLEUNIT["arc-second",4.84813681109536E-06],
                ID["EPSG",8608]],
            PARAMETER["Y-axis rotation",-1.655,
                ANGLEUNIT["arc-second",4.84813681109536E-06],
                ID["EPSG",8609]],
            PARAMETER["Z-axis rotation",7.824,
                ANGLEUNIT["arc-second",4.84813681109536E-06],
                ID["EPSG",8610]],
            PARAMETER["Scale difference",16.641,
                SCALEUNIT["parts per million",1E-06],
                ID["EPSG",8611]],
            OPERATIONACCURACY[1.2],
            ID["EPSG",1616],
            REMARK["Residuals 1.2m at 67% probability level."]]],
    STEP[
        COORDINATEOPERATION["WGS 72 to WGS 84 (1)",
            VERSION["DMA1"],
            SOURCECRS[
                GEOGCRS["WGS 72",
                    DYNAMIC[
                        FRAMEEPOCH[1972]],
                    DATUM["World Geodetic System 1972",
                        ELLIPSOID["WGS 72",6378135,298.26,
                            LENGTHUNIT["metre",1]]],
                    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]],
                    ID["EPSG",4322]]],
            TARGETCRS[
                GEOGCRS["WGS 84",
                    ENSEMBLE["World Geodetic System 1984 ensemble",
                        MEMBER["World Geodetic System 1984 (Transit)"],
                        MEMBER["World Geodetic System 1984 (G730)"],
                        MEMBER["World Geodetic System 1984 (G873)"],
                        MEMBER["World Geodetic System 1984 (G1150)"],
                        MEMBER["World Geodetic System 1984 (G1674)"],
                        MEMBER["World Geodetic System 1984 (G1762)"],
                        MEMBER["World Geodetic System 1984 (G2139)"],
                        ELLIPSOID["WGS 84",6378137,298.257223563,
                            LENGTHUNIT["metre",1]],
                        ENSEMBLEACCURACY[2.0]],
                    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]],
                    ID["EPSG",4326]]],
            METHOD["Position Vector transformation (geog2D domain)",
                ID["EPSG",9606]],
            PARAMETER["X-axis translation",0,
                LENGTHUNIT["metre",1],
                ID["EPSG",8605]],
            PARAMETER["Y-axis translation",0,
                LENGTHUNIT["metre",1],
                ID["EPSG",8606]],
            PARAMETER["Z-axis translation",4.5,
                LENGTHUNIT["metre",1],
                ID["EPSG",8607]],
            PARAMETER["X-axis rotation",0,
                ANGLEUNIT["arc-second",4.84813681109536E-06],
                ID["EPSG",8608]],
            PARAMETER["Y-axis rotation",0,
                ANGLEUNIT["arc-second",4.84813681109536E-06],
                ID["EPSG",8609]],
            PARAMETER["Z-axis rotation",0.554,
                ANGLEUNIT["arc-second",4.84813681109536E-06],
                ID["EPSG",8610]],
            PARAMETER["Scale difference",0.2263,
                SCALEUNIT["parts per million",1E-06],
                ID["EPSG",8611]],
            OPERATIONACCURACY[2.0],
            ID["EPSG",1237]]],
    OPERATIONACCURACY[2.5],
    USAGE[
        SCOPE["Oil and gas exploration and production."],
        AREA["Oman - onshore. Includes Musandam and the Kuria Muria (Al Hallaniyah) islands."],
        BBOX[16.59,51.99,26.58,59.91]],
    ID["EPSG",8581],
    REMARK["Replaced by PSD93 to WGS 84 (1) (code 1439) in 1997. Can be implemented as a position vector tfm with parameter values dX= -182.046 dY= -225.604 dZ=+173.384m rX= -0.616 rY= -1.655 rZ=+8.378"" dS=16.8673ppm."]]

Definition: PROJ.4

+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +inv +proj=longlat +a=6378249.145 +rf=293.465 +step +proj=push +v_3 +step +proj=cart +a=6378249.145 +rf=293.465 +step +proj=helmert +x=-182.046 +y=-225.604 +z=168.884 +rx=-0.616 +ry=-1.655 +rz=7.824 +s=16.641 +convention=position_vector +step +proj=helmert +x=0 +y=0 +z=4.5 +rx=0 +ry=0 +rz=0.554 +s=0.2263 +convention=position_vector +step +inv +proj=cart +ellps=WGS84 +step +proj=pop +v_3 +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1

Definition: JavaScript (Proj4js)

proj4.defs("EPSG:8581","+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +inv +proj=longlat +a=6378249.145 +rf=293.465 +step +proj=push +v_3 +step +proj=cart +a=6378249.145 +rf=293.465 +step +proj=helmert +x=-182.046 +y=-225.604 +z=168.884 +rx=-0.616 +ry=-1.655 +rz=7.824 +s=16.641 +convention=position_vector +step +proj=helmert +x=0 +y=0 +z=4.5 +rx=0 +ry=0 +rz=0.554 +s=0.2263 +convention=position_vector +step +inv +proj=cart +ellps=WGS84 +step +proj=pop +v_3 +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "ConcatenatedOperation",
    "name": "PSD93 to WGS 84 (2)",
    "source_crs": {
        "type": "GeographicCRS",
        "name": "PSD93",
        "datum": {
            "type": "GeodeticReferenceFrame",
            "name": "PDO Survey Datum 1993",
            "ellipsoid": {
                "name": "Clarke 1880 (RGS)",
                "semi_major_axis": 6378249.145,
                "inverse_flattening": 293.465
            }
        },
        "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": 4134
        }
    },
    "target_crs": {
        "type": "GeographicCRS",
        "name": "WGS 84",
        "datum_ensemble": {
            "name": "World Geodetic System 1984 ensemble",
            "members": [
                {
                    "name": "World Geodetic System 1984 (Transit)",
                    "id": {
                        "authority": "EPSG",
                        "code": 1166
                    }
                },
                {
                    "name": "World Geodetic System 1984 (G730)",
                    "id": {
                        "authority": "EPSG",
                        "code": 1152
                    }
                },
                {
                    "name": "World Geodetic System 1984 (G873)",
                    "id": {
                        "authority": "EPSG",
                        "code": 1153
                    }
                },
                {
                    "name": "World Geodetic System 1984 (G1150)",
                    "id": {
                        "authority": "EPSG",
                        "code": 1154
                    }
                },
                {
                    "name": "World Geodetic System 1984 (G1674)",
                    "id": {
                        "authority": "EPSG",
                        "code": 1155
                    }
                },
                {
                    "name": "World Geodetic System 1984 (G1762)",
                    "id": {
                        "authority": "EPSG",
                        "code": 1156
                    }
                },
                {
                    "name": "World Geodetic System 1984 (G2139)",
                    "id": {
                        "authority": "EPSG",
                        "code": 1309
                    }
                }
            ],
            "ellipsoid": {
                "name": "WGS 84",
                "semi_major_axis": 6378137,
                "inverse_flattening": 298.257223563
            },
            "accuracy": "2.0",
            "id": {
                "authority": "EPSG",
                "code": 6326
            }
        },
        "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": 4326
        }
    },
    "steps": [
        {
            "type": "Transformation",
            "name": "PSD93 to WGS 72 (1)",
            "source_crs": {
                "type": "GeographicCRS",
                "name": "PSD93",
                "datum": {
                    "type": "GeodeticReferenceFrame",
                    "name": "PDO Survey Datum 1993",
                    "ellipsoid": {
                        "name": "Clarke 1880 (RGS)",
                        "semi_major_axis": 6378249.145,
                        "inverse_flattening": 293.465
                    }
                },
                "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": 4134
                }
            },
            "target_crs": {
                "type": "GeographicCRS",
                "name": "WGS 72",
                "datum": {
                    "type": "DynamicGeodeticReferenceFrame",
                    "name": "World Geodetic System 1972",
                    "frame_reference_epoch": 1972,
                    "ellipsoid": {
                        "name": "WGS 72",
                        "semi_major_axis": 6378135,
                        "inverse_flattening": 298.26
                    }
                },
                "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": 4322
                }
            },
            "method": {
                "name": "Position Vector transformation (geog2D domain)",
                "id": {
                    "authority": "EPSG",
                    "code": 9606
                }
            },
            "parameters": [
                {
                    "name": "X-axis translation",
                    "value": -182.046,
                    "unit": "metre",
                    "id": {
                        "authority": "EPSG",
                        "code": 8605
                    }
                },
                {
                    "name": "Y-axis translation",
                    "value": -225.604,
                    "unit": "metre",
                    "id": {
                        "authority": "EPSG",
                        "code": 8606
                    }
                },
                {
                    "name": "Z-axis translation",
                    "value": 168.884,
                    "unit": "metre",
                    "id": {
                        "authority": "EPSG",
                        "code": 8607
                    }
                },
                {
                    "name": "X-axis rotation",
                    "value": -0.616,
                    "unit": {
                        "type": "AngularUnit",
                        "name": "arc-second",
                        "conversion_factor": 4.84813681109536e-06
                    },
                    "id": {
                        "authority": "EPSG",
                        "code": 8608
                    }
                },
                {
                    "name": "Y-axis rotation",
                    "value": -1.655,
                    "unit": {
                        "type": "AngularUnit",
                        "name": "arc-second",
                        "conversion_factor": 4.84813681109536e-06
                    },
                    "id": {
                        "authority": "EPSG",
                        "code": 8609
                    }
                },
                {
                    "name": "Z-axis rotation",
                    "value": 7.824,
                    "unit": {
                        "type": "AngularUnit",
                        "name": "arc-second",
                        "conversion_factor": 4.84813681109536e-06
                    },
                    "id": {
                        "authority": "EPSG",
                        "code": 8610
                    }
                },
                {
                    "name": "Scale difference",
                    "value": 16.641,
                    "unit": {
                        "type": "ScaleUnit",
                        "name": "parts per million",
                        "conversion_factor": 1e-06
                    },
                    "id": {
                        "authority": "EPSG",
                        "code": 8611
                    }
                }
            ],
            "accuracy": "1.2",
            "id": {
                "authority": "EPSG",
                "code": 1616
            },
            "remarks": "Residuals 1.2m at 67% probability level."
        },
        {
            "type": "Transformation",
            "name": "WGS 72 to WGS 84 (1)",
            "source_crs": {
                "type": "GeographicCRS",
                "name": "WGS 72",
                "datum": {
                    "type": "DynamicGeodeticReferenceFrame",
                    "name": "World Geodetic System 1972",
                    "frame_reference_epoch": 1972,
                    "ellipsoid": {
                        "name": "WGS 72",
                        "semi_major_axis": 6378135,
                        "inverse_flattening": 298.26
                    }
                },
                "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": 4322
                }
            },
            "target_crs": {
                "type": "GeographicCRS",
                "name": "WGS 84",
                "datum_ensemble": {
                    "name": "World Geodetic System 1984 ensemble",
                    "members": [
                        {
                            "name": "World Geodetic System 1984 (Transit)",
                            "id": {
                                "authority": "EPSG",
                                "code": 1166
                            }
                        },
                        {
                            "name": "World Geodetic System 1984 (G730)",
                            "id": {
                                "authority": "EPSG",
                                "code": 1152
                            }
                        },
                        {
                            "name": "World Geodetic System 1984 (G873)",
                            "id": {
                                "authority": "EPSG",
                                "code": 1153
                            }
                        },
                        {
                            "name": "World Geodetic System 1984 (G1150)",
                            "id": {
                                "authority": "EPSG",
                                "code": 1154
                            }
                        },
                        {
                            "name": "World Geodetic System 1984 (G1674)",
                            "id": {
                                "authority": "EPSG",
                                "code": 1155
                            }
                        },
                        {
                            "name": "World Geodetic System 1984 (G1762)",
                            "id": {
                                "authority": "EPSG",
                                "code": 1156
                            }
                        },
                        {
                            "name": "World Geodetic System 1984 (G2139)",
                            "id": {
                                "authority": "EPSG",
                                "code": 1309
                            }
                        }
                    ],
                    "ellipsoid": {
                        "name": "WGS 84",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257223563
                    },
                    "accuracy": "2.0",
                    "id": {
                        "authority": "EPSG",
                        "code": 6326
                    }
                },
                "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": 4326
                }
            },
            "method": {
                "name": "Position Vector transformation (geog2D domain)",
                "id": {
                    "authority": "EPSG",
                    "code": 9606
                }
            },
            "parameters": [
                {
                    "name": "X-axis translation",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                        "authority": "EPSG",
                        "code": 8605
                    }
                },
                {
                    "name": "Y-axis translation",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                        "authority": "EPSG",
                        "code": 8606
                    }
                },
                {
                    "name": "Z-axis translation",
                    "value": 4.5,
                    "unit": "metre",
                    "id": {
                        "authority": "EPSG",
                        "code": 8607
                    }
                },
                {
                    "name": "X-axis rotation",
                    "value": 0,
                    "unit": {
                        "type": "AngularUnit",
                        "name": "arc-second",
                        "conversion_factor": 4.84813681109536e-06
                    },
                    "id": {
                        "authority": "EPSG",
                        "code": 8608
                    }
                },
                {
                    "name": "Y-axis rotation",
                    "value": 0,
                    "unit": {
                        "type": "AngularUnit",
                        "name": "arc-second",
                        "conversion_factor": 4.84813681109536e-06
                    },
                    "id": {
                        "authority": "EPSG",
                        "code": 8609
                    }
                },
                {
                    "name": "Z-axis rotation",
                    "value": 0.554,
                    "unit": {
                        "type": "AngularUnit",
                        "name": "arc-second",
                        "conversion_factor": 4.84813681109536e-06
                    },
                    "id": {
                        "authority": "EPSG",
                        "code": 8610
                    }
                },
                {
                    "name": "Scale difference",
                    "value": 0.2263,
                    "unit": {
                        "type": "ScaleUnit",
                        "name": "parts per million",
                        "conversion_factor": 1e-06
                    },
                    "id": {
                        "authority": "EPSG",
                        "code": 8611
                    }
                }
            ],
            "accuracy": "2.0",
            "id": {
                "authority": "EPSG",
                "code": 1237
            }
        }
    ],
    "accuracy": "2.5",
    "scope": "Oil and gas exploration and production.",
    "area": "Oman - onshore. Includes Musandam and the Kuria Muria (Al Hallaniyah) islands.",
    "bbox": {
        "south_latitude": 16.59,
        "west_longitude": 51.99,
        "north_latitude": 26.58,
        "east_longitude": 59.91
    },
    "id": {
        "authority": "EPSG",
        "code": 8581
    },
    "remarks": "Replaced by PSD93 to WGS 84 (1) (code 1439) in 1997. Can be implemented as a position vector tfm with parameter values dX= -182.046 dY= -225.604 dZ=+173.384m rX= -0.616 rY= -1.655 rZ=+8.378\" dS=16.8673ppm."
}

Definition: MapServer - MAPfile

PROJECTION
	"proj=pipeline"
	"step"
	"proj=axisswap"
	"order=2,1"
	"step"
	"proj=unitconvert"
	"xy_in=deg"
	"xy_out=rad"
	"step"
	"inv"
	"proj=longlat"
	"a=6378249.145"
	"rf=293.465"
	"step"
	"proj=push"
	"v_3"
	"step"
	"proj=cart"
	"a=6378249.145"
	"rf=293.465"
	"step"
	"proj=helmert"
	"x=-182.046"
	"y=-225.604"
	"z=168.884"
	"rx=-0.616"
	"ry=-1.655"
	"rz=7.824"
	"s=16.641"
	"convention=position_vector"
	"step"
	"proj=helmert"
	"x=0"
	"y=0"
	"z=4.5"
	"rx=0"
	"ry=0"
	"rz=0.554"
	"s=0.2263"
	"convention=position_vector"
	"step"
	"inv"
	"proj=cart"
	"ellps=WGS84"
	"step"
	"proj=pop"
	"v_3"
	"step"
	"proj=unitconvert"
	"xy_in=rad"
	"xy_out=deg"
	"step"
	"proj=axisswap"
	"order=2,1"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +inv +proj=longlat +a=6378249.145 +rf=293.465 +step +proj=push +v_3 +step +proj=cart +a=6378249.145 +rf=293.465 +step +proj=helmert +x=-182.046 +y=-225.604 +z=168.884 +rx=-0.616 +ry=-1.655 +rz=7.824 +s=16.641 +convention=position_vector +step +proj=helmert +x=0 +y=0 +z=4.5 +rx=0 +ry=0 +rz=0.554 +s=0.2263 +convention=position_vector +step +inv +proj=cart +ellps=WGS84 +step +proj=pop +v_3 +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1">
	<Layer srs="+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +inv +proj=longlat +a=6378249.145 +rf=293.465 +step +proj=push +v_3 +step +proj=cart +a=6378249.145 +rf=293.465 +step +proj=helmert +x=-182.046 +y=-225.604 +z=168.884 +rx=-0.616 +ry=-1.655 +rz=7.824 +s=16.641 +convention=position_vector +step +proj=helmert +x=0 +y=0 +z=4.5 +rx=0 +ry=0 +rz=0.554 +s=0.2263 +convention=position_vector +step +inv +proj=cart +ellps=WGS84 +step +proj=pop +v_3 +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1">
	</Layer>
</Map>

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 8581, 'EPSG', 8581, '+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +inv +proj=longlat +a=6378249.145 +rf=293.465 +step +proj=push +v_3 +step +proj=cart +a=6378249.145 +rf=293.465 +step +proj=helmert +x=-182.046 +y=-225.604 +z=168.884 +rx=-0.616 +ry=-1.655 +rz=7.824 +s=16.641 +convention=position_vector +step +proj=helmert +x=0 +y=0 +z=4.5 +rx=0 +ry=0 +rz=0.554 +s=0.2263 +convention=position_vector +step +inv +proj=cart +ellps=WGS84 +step +proj=pop +v_3 +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1', 'None');