Data Provider Groups | Data Provider Elements
Transformation Matrices
Component matrices of the mean of J2000 to Earth-Fixed transformation.Available for these objects: Scenario
Type: Time-varying data.
Availability: Reports | Graphs | Dynamic Displays | Strip Charts
Data Provider Groups
| Name | Description |
|---|---|
| Precession | Precession transformation matrix based on the IAU 1976 theory of precession. Used to convert from the mean of J2000 reference axes to the Mean of Date axes. |
| Nutation | Nutation transformation matrix based on the IAU 1980 theory of nutation. Used to convert from the Mean of Date axes to the True of Date axes. |
| Rotation | Rotation (main spin) transformation matrix based on the IERS 1996 conventions. Used to convert from the True of Date axes to the pseudo-Earth Fixed axes. |
| Pole Wander | Polar motion transformation matrix based on the IERS 1996 conventions. Used to convert from the pseudo-Earth Fixed axes to the Earth Fixed axes. |
Data Provider Elements
| Name | Dimension | Type | Description |
|---|---|---|---|
| Time | Date | Real Number or Text | Time. |
| Elem[0][0] | Unitless | Real Number | The element in the first row and first column of the transformation matrix. |
| Elem[0][1] | Unitless | Real Number | The element in the first row and second column of the transformation matrix. |
| Elem[0][2] | Unitless | Real Number | The element in the first row and third column of the transformation matrix. |
| Elem[1][0] | Unitless | Real Number | The element in the second row and first column of the transformation matrix. |
| Elem[1][1] | Unitless | Real Number | The element in the second row and second column of the transformation matrix. |
| Elem[1][2] | Unitless | Real Number | The element in the second row and third column of the transformation matrix. |
| Elem[2][0] | Unitless | Real Number | The element in the third row and first column of the transformation matrix. |
| Elem[2][1] | Unitless | Real Number | The element in the third row and second column of the transformation matrix. |
| Elem[2][2] | Unitless | Real Number | The element in the third row and third column of the transformation matrix. |
| 1 - Elem[0][0] | Unitless | Real Number | Value equal to one minus the value of the element in the first row and first column of the transformation matrix. |
| 1 - Elem[1][1] | Unitless | Real Number | Value equal to one minus the value of the element in the second row and second column of the transformation matrix. |
| 1 - Elem[2][2] | Unitless | Real Number | Value equal to one minus the value of the element in the third row and third column of the transformation matrix. |