NOAO >   Observing Info >   Approved Programs >   2014A-0468

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Proposal Information for 2014A-0468


PI: David Polishook, MIT, davidpol@mit.edu
Address: Earth, Atmospheric and Planetary Sciences, 77 Massachusetts Ave., Cambridge, MA 02139, USA

CoI: Nicholas Moskovitz, MIT

Title: A search for color heterogeneity on the surfaces of rapidly rotating rubble pile asteroids

Abstract: We propose to use ANDICAM's unique capabilities (IR+visible) to obtain simultaneous observations in the visible and near-infrared to detect rotational color variation on asteroidal surfaces. Our survey focuses on fast-rotating asteroids (P<=2.5 hours) on the edge of the “rubble pile spin barrier”, where objects larger than 200 meters in diameter shed mass and disintegrate. Detecting color variation, due to exposure of “fresh” material, will allow us to model the mass shedding process, its extent and age, and thus support or reject hypotheses of rotational-fission. We will obtain V-J colors where the distinction between “fresh” and “weathered” surfaces are most prominent.


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



NOAO >   Observing Info >   Approved Programs >   2014A-0468

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