The mean equator mean equinox coordinate
system evaluated at the J2000.0 epoch (2000 January 1.5 = JD
2451545.0 TDB).
| Name |
Dimension |
Type |
Description |
| Time |
DateFormat |
Real Number |
Time. |
| x |
Rate |
Real Number |
The X component of the velocity vector. |
| y |
Rate |
Real Number |
The Y component of the velocity vector. |
| z |
Rate |
Real Number |
The Z component of the velocity vector. |
| speed |
Rate |
Real Number |
The magnitude of the velocity vector. |
| radial |
Rate |
Real Number |
The radial component of the velocity vector. |
| in-track |
Rate |
Real Number |
The in-track component of the acceleration vector
(i.e., the component in the orbit plane perpendicular to the
radial). |