ATS77 to NAD83(CSRS)v6 (4)
EPSG:9106±0.06 m- Method:
- NTv2
- Area of use:
- Canada - Nova Scotia
- Scope:
- Geodesy.
Grid file: NS778302.gsb
Derived through NAD83(CSRS)v6. Replaces ATS77 to NAD83(CSRS)v3 (3) (transformation code 9235).
Convert ATS77 to NAD83(CSRS)v6
Convert coordinates from ATS77 (EPSG:4122) to NAD83(CSRS)v6 (EPSG:8252) — official EPSG transformation parameters, accuracy and area of use, with a free in-browser converter.
Official EPSG transformation from ATS77 to NAD83(CSRS)v6
The EPSG Geodetic Parameter Dataset defines 1 transformation between ATS77 (EPSG:4122) and NAD83(CSRS)v6 (EPSG:8252). Its parameters, accuracy and area of use are listed below.
Convert EPSG:4122 to EPSG:8252 in code
The same transformation with common GIS tools and libraries:
from pyproj import Transformer
transformer = Transformer.from_crs("EPSG:4122", "EPSG:8252", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)Source: EPSG:4122 — ATS77
geographic system using latitude and longitude on an ellipsoid · Area of use: Canada - Maritime Provinces
+proj=longlat +a=6378135 +rf=298.257 +no_defs +type=crsMore about EPSG:4122 →
Target: EPSG:8252 — NAD83(CSRS)v6
geographic system using latitude and longitude on an ellipsoid · Area of use: Canada
+proj=longlat +ellps=GRS80 +no_defs +type=crsMore about EPSG:8252 →
Frequently asked questions
- How accurate is converting ATS77 to NAD83(CSRS)v6?
- The most accurate official EPSG transformation between these systems is accurate to about ±0.06 m within its stated area of use. Browser-based converters approximate datum shifts with Helmert parameters; for surveying-grade work apply the official transformation (including the grid-shift files listed below) in a desktop GIS.
- Does my data leave the browser when I use this converter?
- No. All coordinate transformations are computed locally in your browser using proj4js. The coordinates you enter are never transmitted to any server.