A coordinate system attached to the
central body and rotating with it. The z-axis is nominally along
the rotation axis.
Name |
Dimension |
Type |
Description |
Time |
DateFormat |
Real Number |
Time. |
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 or Text |
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. |
Lat Rate |
AngleRateUnit |
Real Number |
The rate of change of the detic latitude. |
Lon Rate |
AngleRateUnit |
Real Number |
The rate of change of the detic longitude. |
Alt Rate |
Rate |
Real Number |
The rate of change of the altitude value. |
Centric Lat |
LatitudeUnit |
Real Number |
The centric latitude (i.e., angle between the detic
subpoint's position vector and the XY plane). |
Centric Lon |
LongitudeUnit |
Real Number |
The centric longitude (i.e., angle from the X-axis
locating the projection of the detic subpoint's position vector
onto the XY plane). |
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 or Text |
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. |
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. |