Asteroid pairs: A complex picture

0511645 - ASÚ 2020 RIV US eng J - Journal Article
Pravec, Petr - Fatka, Petr - Vokrouhlický, D. - Scheirich, Peter - Ďurech, J. - Scheeres, D.J. - Kušnirák, Peter - Hornoch, Kamil - Kučáková, Hana … Total 50 authors
Asteroid pairs: A complex picture.
Icarus. Roč. 333, November (2019), s. 429-463. ISSN 0019-1035. E-ISSN 1090-2643
R&D Projects: GA ČR(CZ) GA17-00774S
Institutional support: RVO:67985815
Keywords : asteroids * dynamics * rotation
OECD category: Astronomy (including astrophysics,space science)
Impact factor: 3.516, year: 2019
Method of publishing: Limited access
https://doi.org/10.1016/j.icarus.2019.05.014

We studied a sample of 93 asteroid pairs, i.e., pairs of genetically related asteroids that are on highly similar heliocentric orbits. We estimated times elapsed since separation of pair members (i.e., pair age) that are between 7 x 10(3) yr and a few 10(6) yr. With photometric observations, we derived the rotation periods P-1 for all the primaries (i.e., the larger members of asteroid pairs) and a sample of secondaries (the smaller pair members). We derived the absolute magnitude differences of the studied asteroid pairs that provide their mass ratios q. For a part of the studied pairs, we refined their WISE geometric albedos and collected or estimated their taxonomic classifications. For 17 asteroid pairs, we also determined their pole positions. In two pairs where we obtained the spin poles for both pair components, we saw the same sense of rotation for both components and constrained the angles between their original spin vectors at the time of their separation.
Permanent Link: http://hdl.handle.net/11104/0301879