ITRF93 to ITRF2020 (1)
EPSG:9998±0.01 m- Method:
- Time-dependent Position Vector tfm (geocentric)
- Area of use:
- World
- Scope:
- Geodesy.
| Parameter | Value | Unit |
|---|---|---|
| X-axis translation(tx) | 65.8 | millimetre |
| Y-axis translation(ty) | -1.9 | millimetre |
| Z-axis translation(tz) | 71.3 | millimetre |
| X-axis rotation(rx) | 3.36 | milliarc-second |
| Y-axis rotation(ry) | 4.33 | milliarc-second |
| Z-axis rotation(rz) | -0.75 | milliarc-second |
| Scale difference(ds) | -4.47 | parts per billion |
| rate tx | 2.8 | millimetres per year |
| rate ty | 0.2 | millimetres per year |
| rate tz | 2.3 | millimetres per year |
| rate rx | 0.11 | milliarc-seconds per year |
| rate ry | 0.19 | milliarc-seconds per year |
| rate rz | -0.07 | milliarc-seconds per year |
| rate ds | -0.12 | parts per billion per year |
| epoch | 2015 | year |
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.