Convert coordinates from WGS 84 (Transit) (EPSG:7815) to ITRF90 (EPSG:4912) — official EPSG transformation parameters, accuracy and area of use, with a free in-browser converter.
The EPSG Geodetic Parameter Dataset defines 1 transformation between WGS 84 (Transit) (EPSG:7815) and ITRF90 (EPSG:4912). Its parameters, accuracy and area of use are listed below.
| Parameter | Value | Unit |
|---|---|---|
| X-axis translation(tx) | -0.06 | metre |
| Y-axis translation(ty) | 0.517 | metre |
| Z-axis translation(tz) | 0.223 | metre |
| X-axis rotation(rx) | -0.0183 | arc-second |
| Y-axis rotation(ry) | 0.0003 | arc-second |
| Z-axis rotation(rz) | -0.007 | arc-second |
| Scale difference(ds) | 0.011 | parts per million |
The same transformation with common GIS tools and libraries:
from pyproj import Transformer
transformer = Transformer.from_crs("EPSG:7815", "EPSG:4912", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)geocentric Cartesian system (Earth-centred Earth-fixed) · Area of use: World
+proj=geocent +ellps=WGS84 +units=m +no_defs +type=crsMore about EPSG:7815 →
geocentric Cartesian system (Earth-centred Earth-fixed) · Area of use: World
+proj=geocent +ellps=GRS80 +units=m +no_defs +type=crsMore about EPSG:4912 →