EPSG:26706

NAD27 / UTM zone 6N

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: metre

Geodetic CRS: NAD27

Datum: North American Datum 1927

Ellipsoid: Clarke 1866

Prime meridian: Greenwich

Data source: EPSG

Revision date: 1995-06-02

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Definition: OGC Well Known Text 2 (2019)

BOUNDCRS[
    SOURCECRS[
        BOUNDCRS[
            SOURCECRS[
                BOUNDCRS[
                    SOURCECRS[
                        BOUNDCRS[
                            SOURCECRS[
                                PROJCRS["NAD27 / UTM zone 6N",
                                    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["UTM zone 6N",
                                        METHOD["Transverse Mercator",
                                            ID["EPSG",9807]],
                                        PARAMETER["Latitude of natural origin",0,
                                            ANGLEUNIT["degree",0.0174532925199433],
                                            ID["EPSG",8801]],
                                        PARAMETER["Longitude of natural origin",-147,
                                            ANGLEUNIT["degree",0.0174532925199433],
                                            ID["EPSG",8802]],
                                        PARAMETER["Scale factor at natural origin",0.9996,
                                            SCALEUNIT["unity",1],
                                            ID["EPSG",8805]],
                                        PARAMETER["False easting",500000,
                                            LENGTHUNIT["metre",1],
                                            ID["EPSG",8806]],
                                        PARAMETER["False northing",0,
                                            LENGTHUNIT["metre",1],
                                            ID["EPSG",8807]]],
                                    CS[Cartesian,2],
                                        AXIS["(E)",east,
                                            ORDER[1],
                                            LENGTHUNIT["metre",1]],
                                        AXIS["(N)",north,
                                            ORDER[2],
                                            LENGTHUNIT["metre",1]],
                                    ID["EPSG",26706]]],
                            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[
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                            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[
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                    DYNAMIC[
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                    DATUM["International Terrestrial Reference Frame 2008",
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                            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",
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                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."],
                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=utm +zone=6 +datum=NAD27 +units=m +no_defs +type=crs

Definition: JavaScript (Proj4js)

proj4.defs("EPSG:26706","+proj=utm +zone=6 +datum=NAD27 +units=m +no_defs +type=crs");

Definition: JSON

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    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "BoundCRS",
    "source_crs": {
        "type": "BoundCRS",
        "source_crs": {
            "type": "BoundCRS",
            "source_crs": {
                "type": "BoundCRS",
                "source_crs": {
                    "type": "ProjectedCRS",
                    "name": "NAD27 / UTM zone 6N",
                    "base_crs": {
                        "name": "NAD27",
                        "datum": {
                            "type": "GeodeticReferenceFrame",
                            "name": "North American Datum 1927",
                            "ellipsoid": {
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                                "semi_major_axis": 6378206.4,
                                "semi_minor_axis": 6356583.8
                            }
                        },
                        "coordinate_system": {
                            "subtype": "ellipsoidal",
                            "axis": [
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                                    "name": "Geodetic latitude",
                                    "abbreviation": "Lat",
                                    "direction": "north",
                                    "unit": "degree"
                                },
                                {
                                    "name": "Geodetic longitude",
                                    "abbreviation": "Lon",
                                    "direction": "east",
                                    "unit": "degree"
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                            ]
                        },
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                            "id": {
                                "authority": "EPSG",
                                "code": 9807
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                        },
                        "parameters": [
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                                "name": "Latitude of natural origin",
                                "value": 0,
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                            },
                            {
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                                "unit": "metre"
                            }
                        ]
                    },
                    "id": {
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                "target_crs": {
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                    "name": "NAD83",
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                "transformation": {
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                        "name": "NADCON",
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                    },
                    "parameters": [
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                            "name": "Latitude difference file",
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                            "id": {
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                                "code": 8657
                            }
                        },
                        {
                            "name": "Longitude difference file",
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                                "code": 8658
                            }
                        }
                    ],
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                }
            },
            "target_crs": {
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            },
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                            },
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                                "unit": "degree"
                            }
                        ]
                    },
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                    }
                },
                "parameters": [
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                    },
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                        "name": "Z-axis translation",
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                    }
                ],
                "id": {
                    "authority": "EPSG",
                    "code": 8971
                }
            }
        },
        "target_crs": {
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            "name": "ITRF2008",
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            },
            "coordinate_system": {
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                        "direction": "geocentricX",
                        "unit": "metre"
                    },
                    {
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                        "abbreviation": "Y",
                        "direction": "geocentricY",
                        "unit": "metre"
                    },
                    {
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                        "abbreviation": "Z",
                        "direction": "geocentricZ",
                        "unit": "metre"
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                ]
            },
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        },
        "transformation": {
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                            "unit": "metre"
                        },
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                            "unit": "metre"
                        }
                    ]
                },
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            },
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                },
                {
                    "name": "Z-axis translation",
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                },
                {
                    "name": "X-axis rotation",
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                        "name": "milliarc-second",
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                    },
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                    }
                },
                {
                    "name": "Y-axis rotation",
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                        "name": "milliarc-second",
                        "conversion_factor": 4.84813681109536e-09
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                },
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                },
                {
                    "name": "Scale difference",
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                    "unit": {
                        "type": "ScaleUnit",
                        "name": "parts per billion",
                        "conversion_factor": 1e-09
                    },
                    "id": {
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                        "code": 8611
                    }
                },
                {
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                        "type": "LinearUnit",
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                        "conversion_factor": 3.16887651727315e-08
                    },
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                        "code": 1040
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                },
                {
                    "name": "Rate of change of Y-axis translation",
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                        "type": "LinearUnit",
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                        "conversion_factor": 3.16887651727315e-08
                    },
                    "id": {
                        "authority": "EPSG",
                        "code": 1041
                    }
                },
                {
                    "name": "Rate of change of Z-axis translation",
                    "value": -0.00134,
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                        "type": "LinearUnit",
                        "name": "metres per year",
                        "conversion_factor": 3.16887651727315e-08
                    },
                    "id": {
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                    }
                },
                {
                    "name": "Rate of change of X-axis rotation",
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                        "name": "milliarc-seconds per year",
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                    },
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                },
                {
                    "name": "Rate of change of Y-axis rotation",
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                    "name": "Rate of change of Z-axis rotation",
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                    },
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                },
                {
                    "name": "Rate of change of Scale difference",
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}

Definition: MapServer - MAPfile

PROJECTION
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	"datum=NAD27"
	"units=m"
	"no_defs"
	"type=crs"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=utm +zone=6 +datum=NAD27 +units=m +no_defs +type=crs">
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