EPSG:4122

ATS77

Transform Get position on a map

Available transformations
to EPSG:4269
EPSG:4269 - NAD83

  • Canada - Nova Scotia onshore. , accuracy 0.5 m, code 9105 (default) [grid]

Selected transformation

Method: NTv2

Grid Files: GS7783.GSB

Remarks:

Information source: Nova Scotia Geomatics Centre via ISO Geodetic Register.

Revision date: 2019-05-29

Attributes

Unit: degree (supplier to define representation)

Geodetic CRS: ATS77

Datum: Average Terrestrial System 1977

Ellipsoid: Average Terrestrial System 1977

Prime meridian: Greenwich

Data source: EPSG

Information source: New Brunswick Geographic Information Corporation land and water information standards manual.

Revision date: 2019-09-17

Scope: Geodesy.

Remarks: In use from 1979. To be phased out in late 1990's.

Area of use: Canada - New Brunswick; Nova Scotia; Prince Edward Island.

Coordinate system: Ellipsoidal 2D CS. Axes: latitude, longitude. Orientations: north, east. UoM: degree

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SimpleMap

Center coordinates
-63.01 45.24

WGS84 bounds:
-66.28 43.41
-59.73 47.08

Canada - Nova Scotia onshore.
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Definition: OGC Well Known Text 2 (2019)

BOUNDCRS[
    SOURCECRS[
        GEOGCRS["ATS77",
            DATUM["Average Terrestrial System 1977",
                ELLIPSOID["Average Terrestrial System 1977",6378135,298.257,
                    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]],
            USAGE[
                SCOPE["Geodesy."],
                AREA["Canada - New Brunswick; Nova Scotia; Prince Edward Island."],
                BBOX[43.41,-69.05,48.07,-59.73]],
            ID["EPSG",4122]]],
    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]],
            USAGE[
                SCOPE["Geodesy."],
                AREA["North America - onshore and offshore: Canada - Alberta; British Columbia; Manitoba; New Brunswick; Newfoundland and Labrador; Northwest Territories; Nova Scotia; Nunavut; Ontario; Prince Edward Island; Quebec; Saskatchewan; Yukon. Puerto Rico. United States (USA) - Alabama; Alaska; Arizona; Arkansas; California; Colorado; Connecticut; Delaware; Florida; Georgia; Hawaii; Idaho; Illinois; Indiana; Iowa; Kansas; Kentucky; Louisiana; Maine; Maryland; Massachusetts; Michigan; Minnesota; Mississippi; Missouri; Montana; Nebraska; Nevada; New Hampshire; New Jersey; New Mexico; New York; North Carolina; North Dakota; Ohio; Oklahoma; Oregon; Pennsylvania; Rhode Island; South Carolina; South Dakota; Tennessee; Texas; Utah; Vermont; Virginia; Washington; West Virginia; Wisconsin; Wyoming. US Virgin Islands. British Virgin Islands."],
                BBOX[14.92,167.65,86.45,-40.73]],
            ID["EPSG",4269]]],
    ABRIDGEDTRANSFORMATION["ATS77 to NAD83 (1)",
        METHOD["NTv2",
            ID["EPSG",9615]],
        PARAMETERFILE["Latitude and longitude difference file","GS7783.GSB"],
        USAGE[
            SCOPE["Geodesy."],
            AREA["Canada - Nova Scotia onshore."],
            BBOX[43.41,-66.28,47.08,-59.73]],
        ID["EPSG",9105]]]

Definition: PROJ.4

+proj=longlat +a=6378135 +rf=298.257 +no_defs +type=crs

Definition: JavaScript (Proj4js) 

proj4.defs("EPSG:4122","+proj=longlat +a=6378135 +rf=298.257 +no_defs +type=crs");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "BoundCRS",
    "source_crs": {
        "type": "GeographicCRS",
        "name": "ATS77",
        "datum": {
            "type": "GeodeticReferenceFrame",
            "name": "Average Terrestrial System 1977",
            "ellipsoid": {
                "name": "Average Terrestrial System 1977",
                "semi_major_axis": 6378135,
                "inverse_flattening": 298.257
            }
        },
        "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": 4122
        }
    },
    "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": "ATS77 to NAD83 (1)",
        "method": {
            "name": "NTv2",
            "id": {
                "authority": "EPSG",
                "code": 9615
            }
        },
        "parameters": [
            {
                "name": "Latitude and longitude difference file",
                "value": "GS7783.GSB",
                "id": {
                    "authority": "EPSG",
                    "code": 8656
                }
            }
        ],
        "id": {
            "authority": "EPSG",
            "code": 9105
        }
    }
}

Definition: MapServer - MAPfile

PROJECTION
	"proj=longlat"
	"a=6378135"
	"rf=298.257"
	"no_defs"
	"type=crs"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=longlat +a=6378135 +rf=298.257 +no_defs +type=crs">
	<Layer srs="+proj=longlat +a=6378135 +rf=298.257 +no_defs +type=crs">
	</Layer>
</Map>