A Search for Young Asteroid Pairs with Close Orbits
E. D. Kuznetsova, *, A. E. Rosaevb, E. Plavalovac, V. S. Safronovaa, and M. A. Vasilevaa
aUral Federal University, Yekaterinburg, 620000 Russia
bYaroslavl State University, Yaroslavl, 150000 Russia
cMathematical Institute of the Slovak Academy of Sciences, Bratislava, 81473 Slovakia
Correspondence to: *e-mail: eduard.kuznetsov@urfu.ru
Received 2 September, 2019
Abstract—We analyzed the dynamic evolution of a number of young asteroid pairs in close orbits in order to constrain their ages. Several methods of pair selection and estimation of their age are used: analysis of convergence of orbital elements; estimation of the Kholshevnikov metrics in the space of Keplerian orbital elements; estimation of relative distances and velocities at the moments of asteroid close approaches. Estimates of the age of asteroid pairs are obtained depending on the drift velocities of the semimajor axes of the orbits, due to the Yarkovsky effect.
Keywords: asteroid pairs, numerical simulation, Yarkovsky effect, Kholshevnikov metrics, Hill sphere radius, escape velocity
DOI: 10.1134/S0038094620030077