Convert Katanga 1955 to RGRDC 2005

Convert coordinates from Katanga 1955 (EPSG:4695) to RGRDC 2005 (EPSG:4046) — official EPSG transformation parameters, accuracy and area of use, with a free in-browser converter.

From

Input (lon, lat (decimal degrees))

Output (lon, lat (decimal degrees))

Direct link to this transformation: epsgtransform.com/transform/epsg-4695-to-epsg-4046

Official EPSG transformations from Katanga 1955 to RGRDC 2005

The EPSG Geodetic Parameter Dataset defines 2 transformations between Katanga 1955 (EPSG:4695) and RGRDC 2005 (EPSG:4046). Each applies to a specific area — pick the one whose area of use covers your data.

Katanga 1955 to RGRDC 2005 (2)

EPSG:4067±0.5 mBest accuracy

Method:: Molodensky-Badekas (CF geog2D domain)
Area of use:: Congo DR (Zaire) - Katanga - Lubumbashi area
Scope:: Transformation of coordinates at 0.5m level of accuracy.

Parameter	Value	Unit
X-axis translation(tx)	-102.283	metre
Y-axis translation(ty)	-10.277	metre
Z-axis translation(tz)	-257.396	metre
X-axis rotation(rx)	-3.976	arc-second
Y-axis rotation(ry)	-0.002	arc-second
Z-axis rotation(rz)	-6.203	arc-second
Scale difference(ds)	12.315	parts per million
Pivot X(px)	5580868.818	metre
Pivot Y(py)	2826402.46	metre
Pivot Z(pz)	-1243557.996	metre

Derived at 5 stations across Lubumbashi-Likasi region. Used as transformation Katanga 1955 to WGS 84 - see code 4068.

Katanga 1955 to RGRDC 2005 (1)

EPSG:4065±1.5 m

Method:: Geocentric translations (geog2D domain)
Area of use:: Congo DR (Zaire) - Katanga - Lubumbashi area
Scope:: Transformation of coordinates at 1m to 2m level of accuracy.

Parameter	Value	Unit
X-axis translation(tx)	-103.746	metre
Y-axis translation(ty)	-9.614	metre
Z-axis translation(tz)	-255.95	metre

Derived at 4 stations in Lubumbashi area. May be taken as approximate transformation Katanga 1955 to WGS 84 - see code 4066.

Convert EPSG:4695 to EPSG:4046 in code

The same transformation with common GIS tools and libraries:

from pyproj import Transformer

transformer = Transformer.from_crs("EPSG:4695", "EPSG:4046", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)

Source: EPSG:4695 — Katanga 1955

geographic system using latitude and longitude on an ellipsoid · Area of use: Congo DR (Zaire) - Katanga

+proj=longlat +ellps=clrk66 +no_defs +type=crs

More about EPSG:4695 →

Target: EPSG:4046 — RGRDC 2005

geographic system using latitude and longitude on an ellipsoid · Area of use: Congo DR (Zaire) - south

+proj=longlat +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +no_defs +type=crs

More about EPSG:4046 →

Frequently asked questions

How accurate is converting Katanga 1955 to RGRDC 2005?: The most accurate official EPSG transformation between these systems is accurate to about ±0.5 m within its stated area of use. Browser-based converters approximate datum shifts with Helmert parameters; for surveying-grade work apply the official transformation 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.

Need the reverse? Convert EPSG:4046 to EPSG:4695 →