The mean equator mean equinox coordinate
system evaluated at the beginning of the Besselian year 1950 (31
December 1949 22:09:46.866 = JD 2433282.4234591).
| 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. |
| Rad |
DistanceUnit |
Real Number |
The radius value (i.e. magnitude of the position
vector). |
| 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. |
| Rad Rate |
Rate |
Real Number |
The rate of change of the radius value. |