In search of the source of asteroid (101955) Bennu: Applications of the stochastic YORP model
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Cites background from "In search of the source of asteroid..."
...considered for different scales of surface ages because Ryugu is estimated to have migrated from the main belt to the near-Erth orbit most likely through ν6, the inner most resonance zone of the main belt (9, 15)....
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...Their populations in the inner main belt, from which the largest fraction of near-Earth asteroids is derived (2), contain many large families, such as the Eulalia and Polana families, with these spectral characteristics (23)....
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...The collisional lifetime of Ryugu [(3 to 5) × 108 years] is similar to or less than the breakup time of these families [830þ370 150 million years and 1400 ± 150million years for Eulalia and Polana, respectively (15)]....
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...The collisional lifetime of Ryugu (3 – 5 × 10(8) yr) is similar to or less than the breakup time of these families (830!!"# !!"# My and 1400 ± 150 Myr for Eulalia and Polana, respectively (15))....
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...Orbital dynamics calculations have shown that the most likely origin of Ryugu is either Eulalia or Polana (15)....
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Additional excerpts
..., 2006b) give an age of 280± 112 My, which is higher but consistent; (Bottke et al., 2015) by a different method give an age 170 −30, which is lower but consistent with the IN side....
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...(Vokrouhlický et al., 2006b) give an age of 280± 112 My, which is higher but consistent; (Bottke et al., 2015) by a different method give an age 170+25 −30, which is lower but consistent with the IN side....
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References
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"In search of the source of asteroid..." refers background in this paper
...For example, it is likely that Bennu’s parent body spent most of its life in the main asteroid belt, but we cannot yet say whether it was indigenous to the main belt region (e.g., Bottke et al., 2006b; Bottke and Asphaug, 2013; Levison et al., 2009; Walsh et al., 2011)....
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...The formation location could have been the main asteroid belt, but it may also have been another region altogether (e.g., the outer Solar System beyond Jupiter; Levison et al., 2009; Walsh et al., 2011; Bottke et al., 2006b; Bottke and Asphaug, 2013)....
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851 citations
"In search of the source of asteroid..." refers methods in this paper
...Using these test bodies, we employed the symplectic N-body code SWIFT-RMVS3 (e.g., Levison and Duncan, 1994), modified to accommodate Yarkovsky thermal forces (e.g., Vokrouhlický and Nesvorný, 2008), to track the evolution of test asteroids either entering into the m6 and J3:1 resonances or…...
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