ITRF2014 to ITRF2020 (1)
EPSG:9991±0.001 m- Method:
- Time-dependent Position Vector tfm (geocentric)
- Area of use:
- World
- Scope:
- Geodesy.
| Parameter | Value | Unit |
|---|---|---|
| X-axis translation(tx) | 1.4 | millimetre |
| Y-axis translation(ty) | 0.9 | millimetre |
| Z-axis translation(tz) | -1.4 | millimetre |
| X-axis rotation(rx) | 0 | milliarc-second |
| Y-axis rotation(ry) | 0 | milliarc-second |
| Z-axis rotation(rz) | 0 | milliarc-second |
| Scale difference(ds) | 0.42 | parts per billion |
| rate tx | 0 | millimetres per year |
| rate ty | 0.1 | millimetres per year |
| rate tz | -0.2 | millimetres per year |
| rate rx | 0 | milliarc-seconds per year |
| rate ry | 0 | milliarc-seconds per year |
| rate rz | 0 | milliarc-seconds per year |
| rate ds | 0 | parts per billion per year |
| epoch | 2015 | year |
IERS describes CT in opposite direction. Estimated using core network of 131 stations at 105 sites. Scale difference in ppb and scale difference rate in ppb/yr where 1/billion = 1E-9 or nm/m.