A lower bound of the distance between two elliptic orbits

Research output

1 Citation (Scopus)


We obtain a lower bound of the distance function (MOID) between two noncoplanar bounded Keplerian orbits (either circular or elliptic) with a common focus. This lower bound is positive and vanishes if and only if the orbits intersect. It is expressed explicitly, using only elementary functions of orbital elements, and allows us to significantly increase the speed of processing for large asteroid catalogs. Benchmarks confirm high practical benefits of the lower bound constructed.

Original languageEnglish
Article number28
Pages (from-to)28
Number of pages20
JournalCelestial Mechanics and Dynamical Astronomy
Issue number6
Publication statusPublished - 12 Jun 2019


Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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