Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011mnras.412..987r&link_type=abstract
Monthly Notices of the Royal Astronomical Society, Volume 412, Issue 2, pp. 987-994.
Astronomy and Astrophysics
Astronomy
2
Methods: Numerical, Celestial Mechanics, Minor Planets, Asteroids: General
Scientific paper
The paper expands the idea of Vokrouhlický and Nesvorný who used a modified Zappalà et al. metric with osculating elements in search for pairs of asteroids suspected of having a common origin. Using six different orbital similarity functions, we find that five of them display a similar excess of close pairs in the catalogue of osculating elements. The excess is even higher when mean orbital elements are used. Similarly, when the mean elements are applied, there is a better agreement between the closest pairs found in the same catalogue using different metrics. The common subset of 62 pairs from five lists of 100 closest pairs according to different distance functions is provided. Investigating an artificial sample of asteroid orbital pairs with a known initial orbital velocity difference we find that the Drummond metric best preserves orbital proximity over long time intervals.
Breiter Slawomir
Jopek Tadeusz Jan
Rozek Agata
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