Skip to content
transform

Convert Malongo 1987 to WGS 84

Convert coordinates from Malongo 1987 (EPSG:4259) to WGS 84 (EPSG:4326) — official EPSG transformation parameters, accuracy and area of use, with a free in-browser converter.

Direct link to this transformation: epsgtransform.com/transform/epsg-4259-to-epsg-4326

Official EPSG transformations from Malongo 1987 to WGS 84

The EPSG Geodetic Parameter Dataset defines 3 transformations between Malongo 1987 (EPSG:4259) and WGS 84 (EPSG:4326). Each applies to a specific area — pick the one whose area of use covers your data.

Malongo 1987 to WGS 84 (2)

EPSG:1557±5 mBest accuracy
Method:
Geocentric translations (geog2D domain)
Area of use:
Africa - Angola (Cabinda) and DR Congo (Zaire) - offshore
Scope:
Oil and gas exploration and production.
ParameterValueUnit
X-axis translation(tx)-254.1metre
Y-axis translation(ty)-5.36metre
Z-axis translation(tz)-100.29metre

Derived at station Y in July 1990 through Transit single point positioning using 187 passes by Geodetic Survey Ltd. Replaces Malongo 1987 to WGS 84 (1) (trf code 1330).

Malongo 1987 to WGS 84 (1)

EPSG:1330±10 m
Method:
Geocentric translations (geog2D domain)
Area of use:
Africa - Angola (Cabinda) and DR Congo (Zaire) - offshore
Scope:
Oil and gas exploration and production.
ParameterValueUnit
X-axis translation(tx)-252.95metre
Y-axis translation(ty)-4.11metre
Z-axis translation(tz)-96.38metre

Derived at Station Y in April 1989 using 572 transit satellite passes. Computed value for dZ was -96.42 but -96.38 has been utilised. Replaced Malongo 1987 to WGS 84 (3) (code 15791) in 1989. Replaced by Malongo 1987 to WGS 84 (2) (code 1557) in 1990.

Malongo 1987 to WGS 84 (3)

EPSG:15791±10 m
Method:
Geocentric translations (geog2D domain)
Area of use:
Africa - Angola (Cabinda) and DR Congo (Zaire) - offshore
Scope:
Oil and gas exploration and production.
ParameterValueUnit
X-axis translation(tx)-259.99metre
Y-axis translation(ty)-5.28metre
Z-axis translation(tz)-97.09metre

Derived via WGS 72BE by Geodetic for Chevron in 1987 by single point Transit translocation at 1 station (Malongo Y). Replaced in 1989 by Malongo 1987 to WGS 84 (1) (code 1330).

Convert EPSG:4259 to EPSG:4326 in code

The same transformation with common GIS tools and libraries:

from pyproj import Transformer

transformer = Transformer.from_crs("EPSG:4259", "EPSG:4326", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)

Source: EPSG:4259 — Malongo 1987

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

+proj=longlat +ellps=intl +towgs84=-254.1,-5.36,-100.29,0,0,0,0 +no_defs +type=crs
More about EPSG:4259 →

Target: EPSG:4326 — WGS 84

geographic system using latitude and longitude on an ellipsoid · Area of use: World (by country)

+proj=longlat +datum=WGS84 +no_defs +type=crs
More about EPSG:4326 →

Frequently asked questions

How accurate is converting Malongo 1987 to WGS 84?
The most accurate official EPSG transformation between these systems is accurate to about ±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:4326 to EPSG:4259 →