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Relaxed triangle inequality for the orbital similarity criterion by Southworth and Hawkins and its variants. / Milanov, D. V.; Milanova, Yu V.; Kholshevnikov, K. V.
в: Celestial Mechanics and Dynamical Astronomy, Том 131, № 1, 5, 01.01.2019.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Relaxed triangle inequality for the orbital similarity criterion by Southworth and Hawkins and its variants
AU - Milanov, D. V.
AU - Milanova, Yu V.
AU - Kholshevnikov, K. V.
PY - 2019/1/1
Y1 - 2019/1/1
N2 - In this article, we prove the relaxed triangle inequality for Southworth and Hawkins, Drummond and Jopek orbital similarity criteria on the set of non-rectilinear Keplerian orbits with the eccentricity bounded above. We give estimates of the minimal coefficients in the inequality for each criterion and show that one of the calculated coefficients is exactly minimal. The obtained inequalities can be used for the acceleration of algorithms involving pairwise distances calculations between orbits. We present an algorithm for calculation of all distances not exceeding a fixed number in a quasi-metric space and demonstrate that the algorithm is faster than the complete calculation on the set of meteors orbits. Finally, we estimate the correlation dimensions of the set of main belt asteroids orbits and meteors orbits with respect to various orbital metrics and quasi-metrics.
AB - In this article, we prove the relaxed triangle inequality for Southworth and Hawkins, Drummond and Jopek orbital similarity criteria on the set of non-rectilinear Keplerian orbits with the eccentricity bounded above. We give estimates of the minimal coefficients in the inequality for each criterion and show that one of the calculated coefficients is exactly minimal. The obtained inequalities can be used for the acceleration of algorithms involving pairwise distances calculations between orbits. We present an algorithm for calculation of all distances not exceeding a fixed number in a quasi-metric space and demonstrate that the algorithm is faster than the complete calculation on the set of meteors orbits. Finally, we estimate the correlation dimensions of the set of main belt asteroids orbits and meteors orbits with respect to various orbital metrics and quasi-metrics.
KW - Clustering algorithm
KW - Correlation dimension
KW - Correlation integral
KW - Distance matrix
KW - Orbital similarity criterion
KW - Quasi-metric
KW - Relaxed triangle inequality
KW - Space of Keplerian orbits
KW - METEOR
KW - SEARCH
KW - EFFICIENT ALGORITHM
UR - http://www.scopus.com/inward/record.url?scp=85060731977&partnerID=8YFLogxK
U2 - 10.1007/s10569-019-9884-6
DO - 10.1007/s10569-019-9884-6
M3 - Article
AN - SCOPUS:85060731977
VL - 131
JO - Celestial Mechanics and Dynamical Astronomy
JF - Celestial Mechanics and Dynamical Astronomy
SN - 0923-2958
IS - 1
M1 - 5
ER -
ID: 39306249