Convert coordinates from ONGD17 (EPSG:9292) to WGS 84 (EPSG:4978) — official EPSG transformation parameters, accuracy and area of use, with a free in-browser converter.
The EPSG Geodetic Parameter Dataset defines 1 transformation between ONGD17 (EPSG:9292) and WGS 84 (EPSG:4978). Its parameters, accuracy and area of use are listed below.
| Parameter | Value | Unit |
|---|---|---|
| X-axis translation(tx) | 1.16835 | metre |
| Y-axis translation(ty) | -1.42001 | metre |
| Z-axis translation(tz) | -2.24431 | metre |
| X-axis rotation(rx) | 0.00822 | arc-second |
| Y-axis rotation(ry) | 0.05508 | arc-second |
| Z-axis rotation(rz) | -0.01818 | arc-second |
| Scale difference(ds) | 0.23388 | parts per million |
The same transformation with common GIS tools and libraries:
from pyproj import Transformer
transformer = Transformer.from_crs("EPSG:9292", "EPSG:4978", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)geocentric Cartesian system (Earth-centred Earth-fixed) · Area of use: Oman
+proj=geocent +ellps=GRS80 +towgs84=1.16835,-1.42001,-2.24431,-0.00822,-0.05508,0.01818,0.23388 +units=m +no_defs +type=crsMore about EPSG:9292 →
geocentric Cartesian system (Earth-centred Earth-fixed) · Area of use: World
+proj=geocent +datum=WGS84 +units=m +no_defs +type=crsMore about EPSG:4978 →