EPSG:4122

ATS77

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Available transformations
to EPSG:4326
EPSG:4326 - WGS 84

Selected transformation

Method: NTv2

Grid Files: NB7783v2.gsb

Remarks: Parameter file is from ATS77 to NAD83(CSRS)v2 (1) (code 9237) assuming that NAD83(CSRS)v2 is equivalent to WGS 84 within the accuracy of the transformation.

Information source: OGP

Revision date: 2021-09-23

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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Center coordinates
-66.38 46.31

WGS84 bounds:
-69.05 44.56
-63.7 48.07

Canada - New Brunswick.
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Definition: OGC Well Known Text

GEOGCS["ATS77",
    DATUM["Average_Terrestrial_System_1977",
        SPHEROID["Average Terrestrial System 1977",6378135,298.257],
        EXTENSION["PROJ4_GRIDS","NB7783v2.gsb"]],
    PRIMEM["Greenwich",0,
        AUTHORITY["EPSG","8901"]],
    UNIT["degree",0.0174532925199433,
        AUTHORITY["EPSG","9122"]],
    AUTHORITY["EPSG","4122"]]

Definition: OGC Well Known Text 2 (2019)

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]]

Definition: ESRI Well Known Text

GEOGCS["GCS_ATS_1977",
    DATUM["D_ATS_1977",
        SPHEROID["ATS_1977",6378135.0,298.257],
        EXTENSION["PROJ4_GRIDS","NB7783v2.gsb"]],
    PRIMEM["Greenwich",0.0],
    UNIT["Degree",0.0174532925199433]]

Definition: PROJ.4

+proj=longlat +a=6378135 +rf=298.257 +nadgrids=NB7783v2.gsb +no_defs +type=crs

Definition: JavaScript (Proj4js) 

proj4.defs("EPSG:4122","+proj=longlat +a=6378135 +rf=298.257 +nadgrids=NB7783v2.gsb +no_defs +type=crs");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "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"
            }
        ]
    },
    "scope": "Geodesy.",
    "area": "Canada - New Brunswick; Nova Scotia; Prince Edward Island.",
    "bbox": {
        "south_latitude": 43.41,
        "west_longitude": -69.05,
        "north_latitude": 48.07,
        "east_longitude": -59.73
    },
    "id": {
        "authority": "EPSG",
        "code": 4122
    }
}

Definition: GeoServer

4122=GEOGCS["ATS77",DATUM["Average_Terrestrial_System_1977",SPHEROID["Average Terrestrial System 1977",6378135,298.257],EXTENSION["PROJ4_GRIDS","NB7783v2.gsb"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4122"]]

Definition: MapServer - MAPfile

PROJECTION
	"proj=longlat"
	"a=6378135"
	"rf=298.257"
	"nadgrids=NB7783v2.gsb"
	"no_defs"
	"type=crs"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=longlat +a=6378135 +rf=298.257 +nadgrids=NB7783v2.gsb +no_defs +type=crs">
	<Layer srs="+proj=longlat +a=6378135 +rf=298.257 +nadgrids=NB7783v2.gsb +no_defs +type=crs">
	</Layer>
</Map>

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 4122, 'EPSG', 4122, '+proj=longlat +a=6378135 +rf=298.257 +nadgrids=NB7783v2.gsb +no_defs +type=crs', 'GEOGCS["ATS77",DATUM["Average_Terrestrial_System_1977",SPHEROID["Average Terrestrial System 1977",6378135,298.257],EXTENSION["PROJ4_GRIDS","NB7783v2.gsb"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4122"]]');