ITRF91 to ITRF2014 (1)
EPSG:8072±0.01 m- Method:
- Time-dependent Position Vector tfm (geocentric)
- Area of use:
- World
- Scope:
- Geodesy.
| Parameter | Value | Unit |
|---|---|---|
| X-axis translation(tx) | -27.4 | millimetre |
| Y-axis translation(ty) | -15.5 | millimetre |
| Z-axis translation(tz) | 76.8 | millimetre |
| X-axis rotation(rx) | 0 | milliarc-second |
| Y-axis rotation(ry) | 0 | milliarc-second |
| Z-axis rotation(rz) | -0.26 | milliarc-second |
| Scale difference(ds) | -4.49 | parts per billion |
| rate tx | -0.1 | millimetres per year |
| rate ty | 0.5 | millimetres per year |
| rate tz | 3.3 | millimetres per year |
| rate rx | 0 | milliarc-seconds per year |
| rate ry | 0 | milliarc-seconds per year |
| rate rz | -0.02 | milliarc-seconds per year |
| rate ds | -0.12 | parts per billion per year |
| epoch | 2010 | year |
Scale difference in ppb and scale difference rate in ppb/yr where 1/billion = 1E-9 or nm/m. Derived by IERS from previously published information.