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Convert ITRF88 to ITRF2020

Convert coordinates from ITRF88 (EPSG:4910) to ITRF2020 (EPSG:9988) — official EPSG transformation parameters, accuracy and area of use, with a free in-browser converter.

Direct link to this transformation: epsgtransform.com/transform/epsg-4910-to-epsg-9988

Official EPSG transformation from ITRF88 to ITRF2020

The EPSG Geodetic Parameter Dataset defines 1 transformation between ITRF88 (EPSG:4910) and ITRF2020 (EPSG:9988). Its parameters, accuracy and area of use are listed below.

ITRF88 to ITRF2020 (1)

EPSG:10105±0.01 m
Method:
Time-dependent Position Vector tfm (geocentric)
Area of use:
World
Scope:
Geodesy.
ParameterValueUnit
X-axis translation(tx)-24.5millimetre
Y-axis translation(ty)3.9millimetre
Z-axis translation(tz)169.9millimetre
X-axis rotation(rx)-0.1milliarc-second
Y-axis rotation(ry)0milliarc-second
Z-axis rotation(rz)-0.36milliarc-second
Scale difference(ds)-11.47parts per billion
rate tx-0.1millimetres per year
rate ty0.6millimetres per year
rate tz3.1millimetres per year
rate rx0milliarc-seconds per year
rate ry0milliarc-seconds per year
rate rz-0.02milliarc-seconds per year
rate ds-0.12parts per billion per year
epoch2015year

IERS describes CT in opposite direction. Parameter values derived from the those between ITRF2020, ITRF2014 and ITRF2008 and those published between earlier realizations. Scale difference in ppb and scale difference rate in ppb/yr where 1/billion = 1E-9.

Convert EPSG:4910 to EPSG:9988 in code

The same transformation with common GIS tools and libraries:

from pyproj import Transformer

transformer = Transformer.from_crs("EPSG:4910", "EPSG:9988", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)

Source: EPSG:4910ITRF88

geocentric Cartesian system (Earth-centred Earth-fixed) · Area of use: World

+proj=geocent +ellps=GRS80 +units=m +no_defs +type=crs
More about EPSG:4910

Target: EPSG:9988ITRF2020

geocentric Cartesian system (Earth-centred Earth-fixed) · Area of use: World

+proj=geocent +ellps=GRS80 +units=m +no_defs +type=crs
More about EPSG:9988

Frequently asked questions

How accurate is converting ITRF88 to ITRF2020?
The most accurate official EPSG transformation between these systems is accurate to about ±0.01 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:9988 to EPSG:4910