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Olivine-dominated A-type asteroids in the main belt: Distribution, abundance and relation to families

Hsieh, Henry H.; Moskovitz, Nicholas A.; Polishook, David +5 more

Differentiated asteroids are rare in the main asteroid belt despite evidence for ∼ 100 distinct differentiated bodies in the meteorite record. We have sought to understand why so few main-belt asteroids differentiated and where those differentiated bodies or fragments reside. Using the Sloan Digital Sky Survey (SDSS) to search for a needle in a ha…

Constraining the thermal properties of planetary surfaces using machine learning: Application to airless bodies

Furfaro, Roberto; Cambioni, Saverio; Delbo, Marco +2 more

We present a new method for the determination of the surface properties of airless bodies from measurements of the emitted infrared flux. Our approach uses machine learning techniques to train, validate, and test a neural network representation of the thermophysical behavior of the atmosphereless body given shape model, illumination and observatio…