The ephemeris of the object, expressed
in LLA elements, as a function of time. The coordinate system is
the Fixed frame of the object's central body.
Name |
Dimension |
Type |
Description |
Lat |
LatitudeUnit |
Real Number |
The detic latitude (i.e., angle between the detic
subpoint's surface normal vector and the XY plane.) |
Lon |
LongitudeUnit |
Real Number |
The detic longitude (i.e., angle from the X-axis
locating the projection of the detic subpoint's surface normal
vector onto the XY plane.) Longitude increases in the direction
found using the right-hand rule about the Z-axis. |
Alt |
DistanceUnit |
Real Number |
The altitude value (i.e., magnitude of the relative
position vector between the object and its detic subpoint). |
Alt AGL |
DistanceUnit |
Real Number |
The altitude above ground level. The difference
between the altitude and the terrain altitude. If no terrain is
found at the detic subpoint, then the string "No Terrain" is
returned. |
Ground Alt |
DistanceUnit |
Real Number |
The altitude of the ground. |
Terrain Alt |
DistanceUnit |
Real Number or Text |
The terrain altitude. The altitude of the terrain
located at the detic subpoint's latitude and longitude, measured
from the object's central body surface along the surface normal
through the detic subpoint. If no terrain is found at the detic
subpoint, then the string "No Terrain" is returned. |
Alt MSL |
DistanceUnit |
Real Number |
The altitude above mean sea level. The difference
between the altitude and the height of mean sea level, measured
from the object's central body surface along the surface normal
through the detic subpoint. |
Ground Alt MSL |
DistanceUnit |
Real Number |
The altitude of the ground, expressed with respect
to mean sea level. |
UTM Zone |
Unitless |
Text |
The UTM Zone character indicator for the detic
subpoint. Available only when the central body is Earth. |
UTM Easting |
DistanceUnit |
Real Number |
The easting value within the UTM zone for the detic
subpoint. Available only when the central body is Earth. |
UTM Northing |
DistanceUnit |
Real Number |
The northing value within the UTM zone for the
detic subpoint. Available only when the central body is Earth. |
MGRS Cell |
Unitless |
Text |
The MGRS (Military Grid Reference System) code for
the cell area containing the detic subpoint. Available only when
the central body is Earth. |