Spins and shapes of basaltic asteroids and the missing mantle problem

• DOI: 10.1016/j.icarus.2023.115520
• Publication Date: 2023-03-16T16:20:21Z
• Authors: Dagmara Oszkiewicz; Volodymyr Troianskyi; Adrián Galád; Josef Hanuš; Josef Ďurech; Emil Wilawer; Anna Marciniak; Tomasz Kwiatkowski; Paweł Koleńczuk; Brian A. Skiff; Tom Polakis; Nicholas A. Mosko...; Stefan Geier; Dóra Föhring; Denise Hung; Štefan Gajdoš; Jozef Világi; L’udovít Polčic; Volodymyr Kashuba; Sergei Udovichenko; Leonid Keir; Vladimir Benishek; Donald P. Pray; Vasilij Shevchenko; Yurij Krugly; Paweł Kankiewicz; Sunao Hasegawa; Raoul Behrend; Laurent Bernasconi; Arnaud Leroy; René Roy; Oleksandra Ivanova; Marek Husárik; Andrii Simon
• Keywords: Asteroid belt

Basaltic V-type asteroids are common in the inner part of Main Asteroid Belt and much less abundant mid outer parts. They scientific interest because they sample crusts mantles theoretically plentiful differentiated planetesimals that existed Solar System four billion years ago. Some theories suggest those objects formed terrestrial planet region were then implanted main asteroid belt. In consequence, we should observe a large number fragments multiple Belt. That is filled with fragments; however, difficult to tell apart from typical Vestoids Vesta fugitives. this work, focus on physical dynamical characterization V-types Main-Belt aim reconcile properties planetesimal formation evolution theories. We conducted an observing campaign over 2013–2022 obtained photometric observations located mostly outside family at specific locations (the so-called Cells I II). The total partial dense lightcurves study was ∼ 2910. able model ∼100 V-types. further supplement data 133 spins DAMIT database 237 derived Gaia DR3 (Ďurech & Hanuš 2023). found 78%±11% 38%±13% retrograde rotators Cell II, respectively. This statistic remarkably consistent numerical simulations escape paths fugitives predict 81% 40% II after integration 2 Gys. Based our statistics conclude if there non-Vestoids belt, likely be very few. small fraction anomalous HED meteorites meteorite collections, middle points location close Sun.