The true equator true equinox coordinate
system evaluated at the epoch of the object.
| Name |
Dimension |
Type |
Description |
| Time |
DateFormat |
Real Number |
Time. |
| x |
DistanceUnit |
Real Number |
The X component of the relative position
vector. |
| y |
DistanceUnit |
Real Number |
The Y component of the relative position
vector. |
| z |
DistanceUnit |
Real Number |
The Z component of the relative position
vector. |
| Range |
DistanceUnit |
Real Number |
The range (i.e., distance between the primary and
secondary object) at the given time. |
| x/Range |
Unitless |
Real Number |
The direction cosine of the relative position
vector along the X-axis. |
| y/Range |
Unitless |
Real Number |
The direction cosine of the relative position
vector along the Y-axis. |
| z/Range |
Unitless |
Real Number |
The direction cosine of the relative position
vector along the Z-axis. |
| xVel |
Rate |
Real Number |
The X-component of the relative velocity. |
| yVel |
Rate |
Real Number |
The Y-component of the relative velocity. |
| zVel |
Rate |
Real Number |
The Z-component of the relative velocity. |
| RelSpeed |
Rate |
Real Number |
The magnitude of the relative velocity vector. |
| Right Ascen |
LongitudeUnit |
Real Number |
The signed angle measured from the X axis to the
projection of the position vector into the XY plane. The angle
increases in the direction found by the right hand rule about the Z
axis. |
| Declination |
LatitudeUnit |
Real Number |
Declination of the displacement vector that locates
selected point in the reference coordinate system. Represents the
angle between the displacement vector and its projection onto the
xy-plane of the reference coordinate system. The angle is positive
when the displacement vector is directed toward positive z-axis of
the reference coordinate system. |
| LightTimeDelay |
TimeUnit |
Real Number |
The light time delay used in computing the relative
location. |