Dawn mission's search for satellites of Ceres: Intact protoplanets don't have satellites

Lucy A. McFadden,David R. Skillman,Nargess Memarsadeghi,U. Carsenty,Susanne Schröder,J.-Y. Li,S. Mottola,Max Mutchler,B. J. McLean,Steven Peter Joy,C. Polanskey,Marc D. Rayman,Paul D. Fieseler,Mark V. Sykes,A. Nathues,Pablo Gutierrez-Marques,H. U. Keller,C.A. Raymond,C. T. Russell

Icarus（2018）

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摘要

•A search for satellites of Ceres was conducted as part of NASA's Dawn mission.•The search is complete to a distance of 15 Ceres radii.•No satellites larger than 12–323 m were found, assuming Ceres' geometric albedo of 0.11.•Internal properties of Ceres and of other asteroids without satellites may explain their absence.

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关键词

Dwarf planet Ceres,Asteroids,Satellites of asteroids,Asteroid Ceres

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