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The Hungaria region as a possible source of Trojans and satellites in the inner Solar system

Galiazzo, M. A ; Schwarz, R

Monthly notices of the Royal Astronomical Society, 2014-12, Vol.445 (4), p.3999-4007 [Periódico revisado por pares]

London: Oxford University Press

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  • Título:
    The Hungaria region as a possible source of Trojans and satellites in the inner Solar system
  • Autor: Galiazzo, M. A ; Schwarz, R
  • Assuntos: Asteroids ; Astronomy ; Belts ; Earth ; Inner solar system ; Mars ; Migration ; Probability ; Satellites ; Solar system ; Terrestrial planets
  • É parte de: Monthly notices of the Royal Astronomical Society, 2014-12, Vol.445 (4), p.3999-4007
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
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  • Descrição: The Hungaria family (the closest region of the Main Belt to Mars) is an important source of planet-crossing asteroids and even impactors of terrestrial planets. We present the possibility of asteroids coming from the Hungaria family being captured into co-orbital motion with the terrestrial planets in the inner Solar system. Therefore, we have carried out long-term numerical integrations (up to 100 Myr) to analyse migrations from their original location – the Hungaria family region – into the inner Solar system. During the integration time, we observed whether or not the Hungarias are captured into co-orbital motion with the terrestrial planets. Our results show that 5.5 per cent of 200 Hungarias, selected as a sample of the whole group, escape from the Hungaria region and the probability of becoming co-orbital objects (Trojans, satellites or horseshoes) turns out to be ∼3.3 per cent: 1.8 per cent for Mars and 1.5 per cent for Earth. In addition, we distinguished the classes of co-orbital motion into which the asteroids are captured and how long they stay there in stable motion. Most of the escaped Hungarias become quasi-satellites and the ones captured as Trojans favour the L 5 Lagrangian point. This work highlights the fact that the Hungaria region is a source of Mars and also Earth co-orbital objects.
  • Editor: London: Oxford University Press
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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