Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993cemda..57..341s&link_type=abstract
Celestial Mechanics and Dynamical Astronomy (ISSN 0923-2958), vol. 57, no. 1-2, p. 341-358
Astronomy and Astrophysics
Astronomy
1
Earth Orbits, Earth-Moon System, Orbit Calculation, Orbit Perturbation, Periodic Variations, Solar Orbits, Solar System, Anomalies, Eccentricity
Scientific paper
The effect of changes in the Moon's semimajor axis and the Earth's orbital eccentricity on the occurrence of Saros-like cycles is examined. The Earth-Moon-Sun dynamical system exhibits such cycles for only 25 to 30% of the time interval between -5 x 107 to +5 x 107 years. Not only has the present Saros the smallest period during this time, but it also has one of the longest durations and the period closest to an integral number of anomalistic years, thus making it one of the most efficient Saros-like cycles for reversing solar perturbations in the main lunar problem. During the lifetime of a Saros-like cycle, variations of the Earth's orbital eccentricity cause frequent disappearances and reappearances of the cycle.
Perozzi Ettore
Roy Archie E.
Steves Bonnie A.
Valsecchi Giovanni B.
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