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Proposal Information for 2010A-0312


PI: Rachel Stevenson, UCLA, stevenson@ucla.edu
Address: Dept. Earth and Space Sciences, 595 Charles Young Drive East, Los Angeles, CA 90095-1567, USA

CoI: Henry Hsieh, Queen's University Belfast
CoI: David Jewitt, UCLA
CoI: Yan Fernandez, University of Central Florida

Title: Albedos of Small Hilda Asteroids

Abstract: We seek optical imaging to support a Spitzer Space Telescope program to determine albedos for a sample of Hilda asteroids. The Hilda group, found near 4 AU from the Sun, consists largely of D-type and P-type asteroids, with smaller members tending to be D-types and larger members tending to be P-types. Small D-type Hilda asteroids are of particular interest due to their spectral similarity to cometary nuclei, their possible contribution to the Jupiter-family comet population, and the fact that they may be fragments of larger asteroids that could have had interior ice. Combining optical observations with 24 (micron) photometry from Spitzer will allow us to determine albedos for our targets, and then to compare their albedo distribution to those of various other small-body populations of interest.


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