ITRF2005 to ITRF2008 (2)
EPSG:6389±0.01 m- Method:
- Time-dependent Position Vector tfm (geocentric)
- Area of use:
- World
- Scope:
- Geodesy.
| Parameter | Value | Unit |
|---|---|---|
| X-axis translation(tx) | 2 | millimetre |
| Y-axis translation(ty) | 0.9 | millimetre |
| Z-axis translation(tz) | 4.7 | 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) | -0.94 | parts per billion |
| rate tx | -0.3 | millimetres per year |
| rate ty | 0 | millimetres per year |
| rate tz | 0 | 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 | 2000 | year |
Scale difference in ppb and scale difference rate in ppb/yr where 1/billion = 1E-9 or nm/m. IERS also publish parameter values for epoch 2005.0; because most rates are zero all values as above except tX=0.5mm. Estimated using 171 stations at 131 sites.