EPSG:3800

NAD27 / Alberta 3TM ref merid 120 W

Available transformations
to EPSG:4326

Selected transformation

Grid Files: NTv2_0.gsb

Remarks:

Information source: Various oil industry sources.

Revision date: 2020-03-14

Attributes

Unit: metre

Geodetic CRS: NAD27

Datum: North American Datum 1927

Ellipsoid: Clarke 1866

Prime meridian: Greenwich

Data source: EPSG

Information source: Alberta SRD Lands Branch, Geodetic Fact Sheets 2, 6 and 10. http://www.srd.gov.ab.ca/lands

Revision date: 2008-06-24

Scope: Cadastre, survey control and engineering survey in urban areas, typically in all municipalities that previously comprised the 73 Municipal Integrated Surveying and Mapping (MISAM) areas, also known as urban cadastral map areas. For rural areas use UTM.

Remarks: If used for rural area control markers, area of use is amended to west of 118°W; however use of NAD27 / UTM zone 11N (CRS code 26711) encouraged in these rural areas.

Area of use: Canada - Alberta - west of 118°30' W.

Coordinate system: Cartesian 2D CS. Axes: easting, northing (E,N). Orientations: east, north. UoM: m.

Center coordinates
inf inf

Projected bounds:
3589453.94 5978237.96
4834289.95 6960544.12

WGS84 bounds:
-67.75 40.0
-43.99 64.21

Canada - offshore Newfoundland and Labrador, New Brunswick and Nova Scotia - west of 44°W and north of 40°N.
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Definition: OGC Well Known Text 2 (2019)

BOUNDCRS[
    SOURCECRS[
        BOUNDCRS[
            SOURCECRS[
                BOUNDCRS[
                    SOURCECRS[
                        PROJCRS["NAD27 / Alberta 3TM ref merid 120 W",
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                                DATUM["North American Datum 1927",
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                                PRIMEM["Greenwich",0,
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                            CONVERSION["Alberta 3-degree TM reference meridian 120 W",
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                                    ID["EPSG",9807]],
                                PARAMETER["Latitude of natural origin",0,
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                                PARAMETER["Longitude of natural origin",-120,
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                                PARAMETER["False northing",0,
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                                AXIS["(E)",east,
                                    ORDER[1],
                                    LENGTHUNIT["metre",1]],
                                AXIS["(N)",north,
                                    ORDER[2],
                                    LENGTHUNIT["metre",1]],
                            ID["EPSG",3800]]],
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                        PARAMETERFILE["Latitude and longitude difference file","NTv2_0.gsb"],
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                PARAMETER["X-axis translation",0,
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                PARAMETER["Z-axis translation",0,
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                MEMBER["World Geodetic System 1984 (G1150)"],
                MEMBER["World Geodetic System 1984 (G1674)"],
                MEMBER["World Geodetic System 1984 (G1762)"],
                MEMBER["World Geodetic System 1984 (G2139)"],
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        PARAMETER["X-axis translation",-0.991,
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        PARAMETER["Scale difference",1,
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        USAGE[
            SCOPE["Approximation for medium and low accuracy applications ignoring static/dynamic CRS differences."],
            AREA["Canada - onshore and offshore - Alberta; British Columbia; Manitoba; New Brunswick; Newfoundland and Labrador; Northwest Territories; Nova Scotia; Nunavut; Ontario; Prince Edward Island; Quebec; Saskatchewan; Yukon."],
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        ID["EPSG",1946],
        REMARK["Approximation derived from tfm code 6864 ignoring time-dependent parameters and assuming ITRF96(1997.0) and WGS 84 can be considered the same within the accuracy of the transformation."]]]

Definition: PROJ.4

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Definition: JavaScript (Proj4js)

proj4.defs("EPSG:3800","+proj=tmerc +lat_0=0 +lon_0=-120 +k=0.9999 +x_0=0 +y_0=0 +ellps=clrk66 +towgs84=-0.991,1.9072,0.5129,0.0257899075194932,0.0096500989602704,0.0116599432323421,0 +units=m +no_defs +type=crs");

Definition: JSON

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                "name": "NAD27 / Alberta 3TM ref merid 120 W",
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                        "name": "North American Datum 1927",
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                    "coordinate_system": {
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}

Definition: MapServer - MAPfile

PROJECTION
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	"lat_0=0"
	"lon_0=-120"
	"k=0.9999"
	"x_0=0"
	"y_0=0"
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	"towgs84=-0.991,1.9072,0.5129,0.0257899075194932,0.0096500989602704,0.0116599432323421,0"
	"units=m"
	"no_defs"
	"type=crs"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=tmerc +lat_0=0 +lon_0=-120 +k=0.9999 +x_0=0 +y_0=0 +ellps=clrk66 +towgs84=-0.991,1.9072,0.5129,0.0257899075194932,0.0096500989602704,0.0116599432323421,0 +units=m +no_defs +type=crs">
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