Identification of a 4.3 billion year old asteroid family and planetesimal population in the Inner Main Belt

Abstract

After performing a reassessment of the known dynamical asteroid families in the inner main belt, we report a newly discovered ancient asteroid family with an estimated age of $4.3\pm 1.7$ billion years. Additionally, we report the most comprehensive list of planetesimals, which are asteroids that survived since the planet forming days of the solar system.

21 pages, 13 figures

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Cited by in corpus (6)

• Gaia view of primitive inner-belt asteroid families: Searching for the origins of asteroids Bennu and Ryugu
• Gaia and IRTF abundance of A-type main belt asteroids
• Spin states of X-complex asteroids in the inner main belt -- I. Investigating the Athor and Zita collisional families
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• New Insights into Erg Chech 002 Analogues in the Main Belt from Near-Infrared Spectroscopy
• An ancient L- type family associated to (460) Scania in the Middle Main Belt as revealed by Gaia DR3 spectra