ELP 2000-85 and the dynamic time-universal time relation
Abstract
The new ephemeris of the Moon, ELP 2000-85, has been used to analyse some of more reliably documented historical eclipses of the Sun. The conclusion is that the presently available expressions of the Dynamical Time - Universal Time difference are clearly inadequate for the use with this ephemeris for historical studies. The basic reason lies in the difference between mean lunar longitude in the new and older theories of the motion of the Moon. A provisional relation between the two times applicable presumably before about AD 1700 (back to about 2000 BC) is given.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- October 1988
- Bibcode:
- 1988A&A...205L...8B
- Keywords:
-
- Celestial Bodies;
- Earth Rotation;
- Ephemeris Time;
- Lunar Eclipses;
- Solar Eclipses;
- Universal Time;
- Fortran;
- Lunar Occultation;
- Astronomy