An angular measure of the true direction
of the object, expressed as a time where 360 degrees is
24:00:00.00.
| Name |
Dimension |
Type |
Description |
| Time |
DateFormat |
Real Number |
Time. |
| Apparent Time |
Unitless |
Text |
The difference in angle between the object's detic
longitude and the detic longitude of the apparent position of the
sun, expressed as a time, at the given time. The time is expressed
so that 12:00 (noon) corresponds to the object lying on the
apparent sun line on the sun side, and 00:00 (midnight) corresponds
to lying on the apparent sun line behind the central body. |
| Mean Time |
Unitless |
Text |
The apparent time adjusted by earth's equation of
time. This value smooths out the variation of the motion of the
earth about the sun during the year in the apparent time
computation. The equation of time models the difference between the
right ascension of the true and fictitious sun locations, where the
fictitious sun moves nearly uniformly in the celestial
equator. |
| Local Time |
Unitless |
Text |
The current UTC time plus the detic longitude of
the object expressed as a time. |