Planetary orbits during the past 100 million years

Details Planetary orbits during the past 100 million years Planetary orbits during the past 100 million years

Sep 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999dda....31.0514v&link_type=abstract

American Astronomical Society, DDA meeting #31, #05.14

Astronomy and Astrophysics

Astronomy

Scientific paper

New numerical simulations of planetary orbits are carried out which take advantage of recent improvements in integration methods. In two integrations with slightly different step sizes, the difference in the low-pass filtered eccentricity of the Earth's orbit is less than one part in one million for the first 40 million years. After that, the exponential separation of orbits due to chaos dominates error growth. Preliminary results on the frequencies of secular motions indicate about one percent discrepancy as compared to earlier studies.

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