Volume 655, November 2021
|Number of page(s)
|Planets and planetary systems
|28 October 2021
Asteroid pairs: method validation and new candidates
Institute of Astronomy, V. N. Karazin Kharkiv National University,
35 Sumska Str.,
Accepted: 17 July 2021
Context. An asteroid pair can be described as two asteroids with very similar heliocentric orbits that are genetically related but not gravitationally bound. They can be produced by asteroid collisions or rotational fission. Although over 200 asteroid pairs are known, many more remain to be identified, especially among the newly discovered asteroids.
Aims. The purpose of our work is to find new asteroid pairs in the inner part of the main belt with a new pipeline for asteroid pair search, and to validate the pipeline on a sample of known asteroid pairs.
Methods. Initially, we selected pair candidates in the five-dimensional space of osculating orbital elements. Then the candidates were confirmed using numerical modeling with the backtrack integration of their orbits, including the perturbations from the largest main-belt asteroids and the influence of the non-gravitational Yarkovsky effect.
Results. We performed a survey of the inner part of the main belt and found ten new probable asteroid pairs. Their estimated formation ages lie between 30 and 400 kyr. In addition, our pipeline was tested on a sample of 17 known pairs, and our age estimates agree with those indicated in the literature in most of the cases.
Key words: minor planets, asteroids: general / celestial mechanics
© ESO 2021
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.