EPSG systems

EPSG:2200 ATS77 / New Brunswick Stereographic (ATS77)

Projected system (Oblique Stereographic) in use: Canada - New Brunswick. The full definition below, and conversion in one click.

EPSG publishes no simple transformation to WGS 84 for this datum: conversion works on the ellipsoid alone and can be off by tens of metres.

System record
CodeEPSG:2200
NameATS77 / New Brunswick Stereographic (ATS77)
TypeProjected system — Oblique Stereographic
Area of use Canada - New Brunswick
Bounds W -69,05° · S 44,56° · E -63,70° · N 48,07°
Countries Canada
DatumAverage Terrestrial System 1977
Ellipsoid Average Terrestrial System 1977 a = 6378135 m · 1/f = 298.257
Base geographic system EPSG:4122 — ATS77
Unit metre (N north, E east)
Transformation to WGS 84 No simple transformation published (ellipsoid alone)
ScopeEngineering survey, topographic mapping.

Projection parameters

ParameterValueUnit
Latitude of natural origin46.5degree
Longitude of natural origin-66.5degree
Scale factor at natural origin0.999912unity
False easting300000metre
False northing800000metre

proj4 definition

+proj=sterea +lat_0=46.5 +lon_0=-66.5 +k=0.999912 +x_0=300000 +y_0=800000 +a=6378135 +rf=298.257 +units=m +no_defs

Paste it into QGIS, proj4js, PostGIS (spatial_ref_sys) or GDAL. +towgs84 carries the EPSG transformation to WGS 84; the official code stays EPSG:2200.

WKT (ESRI format, the .prj content)

PROJCS["ATS_1977_New_Brunswick_Stereographic",GEOGCS["GCS_ATS_1977",DATUM["D_ATS_1977",SPHEROID["ATS_1977",6378135.0,298.257]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Double_Stereographic"],PARAMETER["False_Easting",300000.0],PARAMETER["False_Northing",800000.0],PARAMETER["Central_Meridian",-66.5],PARAMETER["Scale_Factor",0.999912],PARAMETER["Latitude_Of_Origin",46.5],UNIT["Meter",1.0]]

All systems — Canada

Source: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.