EPSG:4409

NAD27 / BLM 9N (ftUS)

Selected transformation

Grid Files: conus.las conus.los

Remarks: For use with legacy data - see CT code 9104 for alternative for new areas. Note that steps 1 and 2 are documented in the geog2D domain, steps 3 and 4 in the geocentric domain. Steps 3 and 4 may be implemented in one operation using CT code 8970.

Information source: IOGP

Revision date: 2019-06-13

Attributes

Unit: US survey foot

Geodetic CRS: NAD27

Datum: North American Datum 1927

Ellipsoid: Clarke 1866

Prime meridian: Greenwich

Data source: EPSG

Information source: OGP

Revision date: 2010-02-20

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Definition: OGC Well Known Text 2 (2019)

BOUNDCRS[
    SOURCECRS[
        BOUNDCRS[
            SOURCECRS[
                BOUNDCRS[
                    SOURCECRS[
                        BOUNDCRS[
                            SOURCECRS[
                                PROJCRS["NAD27 / BLM 9N (ftUS)",
                                    BASEGEOGCRS["NAD27",
                                        DATUM["North American Datum 1927",
                                            ELLIPSOID["Clarke 1866",6378206.4,294.978698213898,
                                                LENGTHUNIT["metre",1]]],
                                        PRIMEM["Greenwich",0,
                                            ANGLEUNIT["degree",0.0174532925199433]],
                                        ID["EPSG",4267]],
                                    CONVERSION["BLM zone 9N (US survey feet)",
                                        METHOD["Transverse Mercator",
                                            ID["EPSG",9807]],
                                        PARAMETER["Latitude of natural origin",0,
                                            ANGLEUNIT["degree",0.0174532925199433],
                                            ID["EPSG",8801]],
                                        PARAMETER["Longitude of natural origin",-129,
                                            ANGLEUNIT["degree",0.0174532925199433],
                                            ID["EPSG",8802]],
                                        PARAMETER["Scale factor at natural origin",0.9996,
                                            SCALEUNIT["unity",1],
                                            ID["EPSG",8805]],
                                        PARAMETER["False easting",1640416.67,
                                            LENGTHUNIT["US survey foot",0.304800609601219],
                                            ID["EPSG",8806]],
                                        PARAMETER["False northing",0,
                                            LENGTHUNIT["US survey foot",0.304800609601219],
                                            ID["EPSG",8807]]],
                                    CS[Cartesian,2],
                                        AXIS["easting (X)",east,
                                            ORDER[1],
                                            LENGTHUNIT["US survey foot",0.304800609601219]],
                                        AXIS["northing (Y)",north,
                                            ORDER[2],
                                            LENGTHUNIT["US survey foot",0.304800609601219]],
                                    ID["EPSG",4409]]],
                            TARGETCRS[
                                GEOGCRS["NAD83",
                                    DATUM["North American Datum 1983",
                                        ELLIPSOID["GRS 1980",6378137,298.257222101,
                                            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",4269]]],
                            ABRIDGEDTRANSFORMATION["NAD27 to NAD83 (1)",
                                METHOD["NADCON",
                                    ID["EPSG",9613]],
                                PARAMETERFILE["Latitude difference file","conus.las"],
                                PARAMETERFILE["Longitude difference file","conus.los"],
                                ID["EPSG",1241]]]],
                    TARGETCRS[
                        GEOGCRS["NAD83(2011)",
                            DATUM["NAD83 (National Spatial Reference System 2011)",
                                ELLIPSOID["GRS 1980",6378137,298.257222101,
                                    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",6318]]],
                    ABRIDGEDTRANSFORMATION["NAD83 to NAD83(2011) (1)",
                        METHOD["Geocentric translations (geog2D domain)",
                            ID["EPSG",9603]],
                        PARAMETER["X-axis translation",0,
                            ID["EPSG",8605]],
                        PARAMETER["Y-axis translation",0,
                            ID["EPSG",8606]],
                        PARAMETER["Z-axis translation",0,
                            ID["EPSG",8607]],
                        ID["EPSG",8971]]]],
            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]]],
            ABRIDGEDTRANSFORMATION["Inverse of ITRF2008 to NAD83(2011) (1)",
                METHOD["Inverse of Time-dependent Coordinate Frame rotation (geocen)",
                    ID["INVERSE(EPSG)",1056]],
                PARAMETER["X-axis translation",0.99343,
                    ID["EPSG",8605]],
                PARAMETER["Y-axis translation",-1.90331,
                    ID["EPSG",8606]],
                PARAMETER["Z-axis translation",-0.52655,
                    ID["EPSG",8607]],
                PARAMETER["X-axis rotation",0.02591467,
                    ID["EPSG",8608]],
                PARAMETER["Y-axis rotation",0.00942645,
                    ID["EPSG",8609]],
                PARAMETER["Z-axis rotation",0.01159935,
                    ID["EPSG",8610]],
                PARAMETER["Scale difference",1.71504,
                    ID["EPSG",8611]],
                PARAMETER["Rate of change of X-axis translation",2.50341244864579E-11,
                    ID["EPSG",1040]],
                PARAMETER["Rate of change of Y-axis translation",-1.90132591036389E-11,
                    ID["EPSG",1041]],
                PARAMETER["Rate of change of Z-axis translation",-4.24629453314602E-11,
                    ID["EPSG",1042]],
                PARAMETER["Rate of change of X-axis rotation",2.11268997406601E-12,
                    ID["EPSG",1043]],
                PARAMETER["Rate of change of Y-axis rotation",-2.40023382924337E-11,
                    ID["EPSG",1044]],
                PARAMETER["Rate of change of Z-axis rotation",-1.62658431631631E-12,
                    ID["EPSG",1045]],
                PARAMETER["Rate of change of Scale difference",-0.10201,
                    ID["EPSG",1046]],
                PARAMETER["Parameter reference epoch",1997,
                    ID["EPSG",1047]],
                ID["INVERSE(EPSG)",7807]]]],
    TARGETCRS[
        GEODCRS["ITRF2014",
            DYNAMIC[
                FRAMEEPOCH[2010]],
            DATUM["International Terrestrial Reference Frame 2014",
                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]],
            USAGE[
                SCOPE["Geodesy."],
                AREA["World: Afghanistan, Albania, Algeria, American Samoa, Andorra, Angola, Anguilla, Antarctica, Antigua and Barbuda, Argentina, Armenia, Aruba, Australia, Austria, Azerbaijan, Bahamas, Bahrain, Bangladesh, Barbados, Belgium, Belgium, Belize, Benin, Bermuda, Bhutan, Bolivia, Bonaire, Saint Eustasius and Saba, Bosnia and Herzegovina, Botswana, Bouvet Island, Brazil, British Indian Ocean Territory, British Virgin Islands, Brunei Darussalam, Bulgaria, Burkina Faso, Burundi, Cambodia, Cameroon, Canada, Cape Verde, Cayman Islands, Central African Republic, Chad, Chile, China, Christmas Island, Cocos (Keeling) Islands, Comoros, Congo, Cook Islands, Costa Rica, Côte d'Ivoire (Ivory Coast), Croatia, Cuba, Curacao, Cyprus, Czechia, Denmark, Djibouti, Dominica, Dominican Republic, East Timor, Ecuador, Egypt, El Salvador, Equatorial Guinea, Eritrea, Estonia, Eswatini (Swaziland), Ethiopia, Falkland Islands (Malvinas), Faroe Islands, Fiji, Finland, France, French Guiana, French Polynesia, French Southern Territories, Gabon, Gambia, Georgia, Germany, Ghana, Gibraltar, Greece, Greenland, Grenada, Guadeloupe, Guam, Guatemala, Guinea, Guinea-Bissau, Guyana, Haiti, Heard Island and McDonald Islands, Holy See (Vatican City State), Honduras, China - Hong Kong, Hungary, Iceland, India, Indonesia, Islamic Republic of Iran, Iraq, Ireland, Israel, Italy, Jamaica, Japan, Jordan, Kazakhstan, Kenya, Kiribati, Democratic People's Republic of Korea (North Korea), Republic of Korea (South Korea), Kosovo, Kuwait, Kyrgyzstan, Lao People's Democratic Republic (Laos), Latvia, Lebanon, Lesotho, Liberia, Libyan Arab Jamahiriya, Liechtenstein, Lithuania, Luxembourg, China - Macao, Madagascar, Malawi, Malaysia, Maldives, Mali, Malta, Marshall Islands, Martinique, Mauritania, Mauritius, Mayotte, Mexico, Federated States of Micronesia, Monaco, Mongolia, Montenegro, Montserrat, Morocco, Mozambique, Myanmar (Burma), Namibia, Nauru, Nepal, Netherlands, New Caledonia, New Zealand, Nicaragua, Niger, Nigeria, Niue, Norfolk Island, North Macedonia, Northern Mariana Islands, Norway, Oman, Pakistan, Palau, Panama, Papua New Guinea (PNG), Paraguay, Peru, Philippines, Pitcairn, Poland, Portugal, Puerto Rico, Qatar, Reunion, Romania, Russian Federation, Rwanda, St Barthelemy, St Kitts and Nevis, St Helena, Ascension and Tristan da Cunha, St Lucia, St Martin, St Pierre and Miquelon, Saint Vincent and the Grenadines, Samoa, San Marino, Sao Tome and Principe, Saudi Arabia, Senegal, Serbia, Seychelles, Sierra Leone, Singapore, Slovakia (Slovak Republic), Slovenia, St Maarten, Solomon Islands, Somalia, South Africa, South Georgia and the South Sandwich Islands, South Sudan, Spain, Sri Lanka, Sudan, Suriname, Svalbard and Jan Mayen, Sweden, Switzerland, Syrian Arab Republic, Taiwan, Tajikistan, United Republic of Tanzania, Thailand, The Democratic Republic of the Congo (Zaire), Togo, Tokelau, Tonga, Trinidad and Tobago, Tunisia, Turkey, Turkmenistan, Turks and Caicos Islands, Tuvalu, Uganda, Ukraine, United Arab Emirates (UAE), United Kingdom (UK), United States (USA), United States Minor Outlying Islands, Uruguay, Uzbekistan, Vanuatu, Venezuela, Vietnam, US Virgin Islands, Wallis and Futuna, Western Sahara, Yemen, Zambia, Zimbabwe."],
                BBOX[-90,-180,90,180]],
            ID["EPSG",7789]]],
    ABRIDGEDTRANSFORMATION["ITRF2008 to ITRF2014 (1)",
        METHOD["Time-dependent Position Vector tfm (geocentric)",
            ID["EPSG",1053]],
        PARAMETER["X-axis translation",-0.0016,
            ID["EPSG",8605]],
        PARAMETER["Y-axis translation",-0.0019,
            ID["EPSG",8606]],
        PARAMETER["Z-axis translation",-0.0024,
            ID["EPSG",8607]],
        PARAMETER["X-axis rotation",0,
            ID["EPSG",8608]],
        PARAMETER["Y-axis rotation",0,
            ID["EPSG",8609]],
        PARAMETER["Z-axis rotation",0,
            ID["EPSG",8610]],
        PARAMETER["Scale difference",0.02,
            ID["EPSG",8611]],
        PARAMETER["Rate of change of X-axis translation",0,
            ID["EPSG",1040]],
        PARAMETER["Rate of change of Y-axis translation",0,
            ID["EPSG",1041]],
        PARAMETER["Rate of change of Z-axis translation",3.16887651727315E-12,
            ID["EPSG",1042]],
        PARAMETER["Rate of change of X-axis rotation",0,
            ID["EPSG",1043]],
        PARAMETER["Rate of change of Y-axis rotation",0,
            ID["EPSG",1044]],
        PARAMETER["Rate of change of Z-axis rotation",0,
            ID["EPSG",1045]],
        PARAMETER["Rate of change of Scale difference",-0.03,
            ID["EPSG",1046]],
        PARAMETER["Parameter reference epoch",2010,
            ID["EPSG",1047]],
        USAGE[
            SCOPE["Geodesy."],
            AREA["World."],
            BBOX[-90,-180,90,180]],
        ID["EPSG",7790],
        REMARK["Scale difference in ppb and scale difference rate in ppb/yr where 1/billion = 1E-9 or nm/m. Estimated using 127 stations at 125 sites."]]]

Definition: PROJ.4

+proj=tmerc +lat_0=0 +lon_0=-129 +k=0.9996 +x_0=500000.001016002 +y_0=0 +datum=NAD27 +units=us-ft +no_defs +type=crs

Definition: JavaScript (Proj4js)

proj4.defs("EPSG:4409","+proj=tmerc +lat_0=0 +lon_0=-129 +k=0.9996 +x_0=500000.001016002 +y_0=0 +datum=NAD27 +units=us-ft +no_defs +type=crs");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.5/projjson.schema.json",
    "type": "BoundCRS",
    "source_crs": {
        "type": "BoundCRS",
        "source_crs": {
            "type": "BoundCRS",
            "source_crs": {
                "type": "BoundCRS",
                "source_crs": {
                    "type": "ProjectedCRS",
                    "name": "NAD27 / BLM 9N (ftUS)",
                    "base_crs": {
                        "name": "NAD27",
                        "datum": {
                            "type": "GeodeticReferenceFrame",
                            "name": "North American Datum 1927",
                            "ellipsoid": {
                                "name": "Clarke 1866",
                                "semi_major_axis": 6378206.4,
                                "semi_minor_axis": 6356583.8
                            }
                        },
                        "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": 4267
                        }
                    },
                    "conversion": {
                        "name": "BLM zone 9N (US survey feet)",
                        "method": {
                            "name": "Transverse Mercator",
                            "id": {
                                "authority": "EPSG",
                                "code": 9807
                            }
                        },
                        "parameters": [
                            {
                                "name": "Latitude of natural origin",
                                "value": 0,
                                "unit": "degree",
                                "id": {
                                    "authority": "EPSG",
                                    "code": 8801
                                }
                            },
                            {
                                "name": "Longitude of natural origin",
                                "value": -129,
                                "unit": "degree",
                                "id": {
                                    "authority": "EPSG",
                                    "code": 8802
                                }
                            },
                            {
                                "name": "Scale factor at natural origin",
                                "value": 0.9996,
                                "unit": "unity",
                                "id": {
                                    "authority": "EPSG",
                                    "code": 8805
                                }
                            },
                            {
                                "name": "False easting",
                                "value": 1640416.67,
                                "unit": {
                                    "type": "LinearUnit",
                                    "name": "US survey foot",
                                    "conversion_factor": 0.304800609601219
                                },
                                "id": {
                                    "authority": "EPSG",
                                    "code": 8806
                                }
                            },
                            {
                                "name": "False northing",
                                "value": 0,
                                "unit": {
                                    "type": "LinearUnit",
                                    "name": "US survey foot",
                                    "conversion_factor": 0.304800609601219
                                },
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                                    "code": 8807
                                }
                            }
                        ]
                    },
                    "coordinate_system": {
                        "subtype": "Cartesian",
                        "axis": [
                            {
                                "name": "Easting",
                                "abbreviation": "X",
                                "direction": "east",
                                "unit": {
                                    "type": "LinearUnit",
                                    "name": "US survey foot",
                                    "conversion_factor": 0.304800609601219
                                }
                            },
                            {
                                "name": "Northing",
                                "abbreviation": "Y",
                                "direction": "north",
                                "unit": {
                                    "type": "LinearUnit",
                                    "name": "US survey foot",
                                    "conversion_factor": 0.304800609601219
                                }
                            }
                        ]
                    },
                    "id": {
                        "authority": "EPSG",
                        "code": 4409
                    }
                },
                "target_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83",
                    "datum": {
                        "type": "GeodeticReferenceFrame",
                        "name": "North American Datum 1983",
                        "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": 4269
                    }
                },
                "transformation": {
                    "name": "NAD27 to NAD83 (1)",
                    "method": {
                        "name": "NADCON",
                        "id": {
                            "authority": "EPSG",
                            "code": 9613
                        }
                    },
                    "parameters": [
                        {
                            "name": "Latitude difference file",
                            "value": "conus.las",
                            "id": {
                                "authority": "EPSG",
                                "code": 8657
                            }
                        },
                        {
                            "name": "Longitude difference file",
                            "value": "conus.los",
                            "id": {
                                "authority": "EPSG",
                                "code": 8658
                            }
                        }
                    ],
                    "id": {
                        "authority": "EPSG",
                        "code": 1241
                    }
                }
            },
            "target_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                    "type": "GeodeticReferenceFrame",
                    "name": "NAD83 (National Spatial Reference System 2011)",
                    "ellipsoid": {
                        "name": "GRS 1980",
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                        "inverse_flattening": 298.257222101
                    }
                },
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                            "name": "Geodetic latitude",
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                            "direction": "north",
                            "unit": "degree"
                        },
                        {
                            "name": "Geodetic longitude",
                            "abbreviation": "Lon",
                            "direction": "east",
                            "unit": "degree"
                        }
                    ]
                },
                "id": {
                    "authority": "EPSG",
                    "code": 6318
                }
            },
            "transformation": {
                "name": "NAD83 to NAD83(2011) (1)",
                "method": {
                    "name": "Geocentric translations (geog2D domain)",
                    "id": {
                        "authority": "EPSG",
                        "code": 9603
                    }
                },
                "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": 0,
                        "unit": "metre",
                        "id": {
                            "authority": "EPSG",
                            "code": 8607
                        }
                    }
                ],
                "id": {
                    "authority": "EPSG",
                    "code": 8971
                }
            }
        },
        "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
            }
        },
        "transformation": {
            "name": "Inverse of ITRF2008 to NAD83(2011) (1)",
            "method": {
                "name": "Inverse of Time-dependent Coordinate Frame rotation (geocen)",
                "id": {
                    "authority": "INVERSE(EPSG)",
                    "code": 1056
                }
            },
            "parameters": [
                {
                    "name": "X-axis translation",
                    "value": 0.99343,
                    "unit": "metre",
                    "id": {
                        "authority": "EPSG",
                        "code": 8605
                    }
                },
                {
                    "name": "Y-axis translation",
                    "value": -1.90331,
                    "unit": "metre",
                    "id": {
                        "authority": "EPSG",
                        "code": 8606
                    }
                },
                {
                    "name": "Z-axis translation",
                    "value": -0.52655,
                    "unit": "metre",
                    "id": {
                        "authority": "EPSG",
                        "code": 8607
                    }
                },
                {
                    "name": "X-axis rotation",
                    "value": 25.91467,
                    "unit": {
                        "type": "AngularUnit",
                        "name": "milliarc-second",
                        "conversion_factor": 4.84813681109536e-09
                    },
                    "id": {
                        "authority": "EPSG",
                        "code": 8608
                    }
                },
                {
                    "name": "Y-axis rotation",
                    "value": 9.42645,
                    "unit": {
                        "type": "AngularUnit",
                        "name": "milliarc-second",
                        "conversion_factor": 4.84813681109536e-09
                    },
                    "id": {
                        "authority": "EPSG",
                        "code": 8609
                    }
                },
                {
                    "name": "Z-axis rotation",
                    "value": 11.59935,
                    "unit": {
                        "type": "AngularUnit",
                        "name": "milliarc-second",
                        "conversion_factor": 4.84813681109536e-09
                    },
                    "id": {
                        "authority": "EPSG",
                        "code": 8610
                    }
                },
                {
                    "name": "Scale difference",
                    "value": 1.71504,
                    "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": 0.00079,
                    "unit": {
                        "type": "LinearUnit",
                        "name": "metres per year",
                        "conversion_factor": 3.16887651727315e-08
                    },
                    "id": {
                        "authority": "EPSG",
                        "code": 1040
                    }
                },
                {
                    "name": "Rate of change of Y-axis translation",
                    "value": -0.0006,
                    "unit": {
                        "type": "LinearUnit",
                        "name": "metres per year",
                        "conversion_factor": 3.16887651727315e-08
                    },
                    "id": {
                        "authority": "EPSG",
                        "code": 1041
                    }
                },
                {
                    "name": "Rate of change of Z-axis translation",
                    "value": -0.00134,
                    "unit": {
                        "type": "LinearUnit",
                        "name": "metres per year",
                        "conversion_factor": 3.16887651727315e-08
                    },
                    "id": {
                        "authority": "EPSG",
                        "code": 1042
                    }
                },
                {
                    "name": "Rate of change of X-axis rotation",
                    "value": 0.06667,
                    "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": -0.75744,
                    "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": -0.05133,
                    "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": -0.10201,
                    "unit": {
                        "type": "ScaleUnit",
                        "name": "parts per billion per year",
                        "conversion_factor": 3.16887651727315e-17
                    },
                    "id": {
                        "authority": "EPSG",
                        "code": 1046
                    }
                },
                {
                    "name": "Parameter reference epoch",
                    "value": 1997,
                    "unit": {
                        "type": "TimeUnit",
                        "name": "year",
                        "conversion_factor": 31556925.445
                    },
                    "id": {
                        "authority": "EPSG",
                        "code": 1047
                    }
                }
            ],
            "id": {
                "authority": "INVERSE(EPSG)",
                "code": 7807
            }
        }
    },
    "target_crs": {
        "type": "GeodeticCRS",
        "name": "ITRF2014",
        "datum": {
            "type": "DynamicGeodeticReferenceFrame",
            "name": "International Terrestrial Reference Frame 2014",
            "frame_reference_epoch": 2010,
            "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": 7789
        }
    },
    "transformation": {
        "name": "ITRF2008 to ITRF2014 (1)",
        "method": {
            "name": "Time-dependent Position Vector tfm (geocentric)",
            "id": {
                "authority": "EPSG",
                "code": 1053
            }
        },
        "parameters": [
            {
                "name": "X-axis translation",
                "value": -1.6,
                "unit": {
                    "type": "LinearUnit",
                    "name": "millimetre",
                    "conversion_factor": 0.001
                },
                "id": {
                    "authority": "EPSG",
                    "code": 8605
                }
            },
            {
                "name": "Y-axis translation",
                "value": -1.9,
                "unit": {
                    "type": "LinearUnit",
                    "name": "millimetre",
                    "conversion_factor": 0.001
                },
                "id": {
                    "authority": "EPSG",
                    "code": 8606
                }
            },
            {
                "name": "Z-axis translation",
                "value": -2.4,
                "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": 0.02,
                "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,
                "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,
                "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": 0.1,
                "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,
                "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": -0.03,
                "unit": {
                    "type": "ScaleUnit",
                    "name": "parts per billion per year",
                    "conversion_factor": 3.16887651727315e-17
                },
                "id": {
                    "authority": "EPSG",
                    "code": 1046
                }
            },
            {
                "name": "Parameter reference epoch",
                "value": 2010,
                "unit": {
                    "type": "TimeUnit",
                    "name": "year",
                    "conversion_factor": 31556925.445
                },
                "id": {
                    "authority": "EPSG",
                    "code": 1047
                }
            }
        ],
        "id": {
            "authority": "EPSG",
            "code": 7790
        }
    }
}

Definition: MapServer - MAPfile

PROJECTION
	"proj=tmerc"
	"lat_0=0"
	"lon_0=-129"
	"k=0.9996"
	"x_0=500000.001016002"
	"y_0=0"
	"datum=NAD27"
	"units=us-ft"
	"no_defs"
	"type=crs"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=tmerc +lat_0=0 +lon_0=-129 +k=0.9996 +x_0=500000.001016002 +y_0=0 +datum=NAD27 +units=us-ft +no_defs +type=crs">
	<Layer srs="+proj=tmerc +lat_0=0 +lon_0=-129 +k=0.9996 +x_0=500000.001016002 +y_0=0 +datum=NAD27 +units=us-ft +no_defs +type=crs">
	</Layer>
</Map>

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 4409, 'EPSG', 4409, '+proj=tmerc +lat_0=0 +lon_0=-129 +k=0.9996 +x_0=500000.001016002 +y_0=0 +datum=NAD27 +units=us-ft +no_defs +type=crs', 'None');