Convert coordinates from RGNC91-93 (lon-lat) (EPSG:10307) to RGNC15 (lon-lat) (EPSG:10312) — official EPSG transformation parameters, accuracy and area of use, with a free in-browser converter.
The EPSG Geodetic Parameter Dataset defines 2 transformations between RGNC91-93 (lon-lat) (EPSG:10307) and RGNC15 (lon-lat) (EPSG:10312). Each applies to a specific area — pick the one whose area of use covers your data.
Grid file: gr3dncl08.tac
Derived at 67 GNSS stations. General accuracy 1 to 1.5cm in planimetry and 2cm in height at epoch 2015.0.
| Parameter | Value | Unit |
|---|---|---|
| X-axis translation(tx) | -0.584 | metre |
| Y-axis translation(ty) | -1.117 | metre |
| Z-axis translation(tz) | 1.125 | metre |
See RGNC91-93 to RGNC15 (2) (transformation code 10322) for authoritative transformation between these CRSs. This transformation is used only as the standard transformation T0 within that transformation.
The same transformation with common GIS tools and libraries:
from pyproj import Transformer
transformer = Transformer.from_crs("EPSG:10307", "EPSG:10312", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)geographic system using latitude and longitude on an ellipsoid · Area of use: New Caledonia
+proj=longlat +ellps=GRS80 +no_defs +type=crsMore about EPSG:10307 →
geographic system using latitude and longitude on an ellipsoid · Area of use: New Caledonia
+proj=longlat +ellps=GRS80 +no_defs +type=crsMore about EPSG:10312 →