The Spitzer Asteroid Catalog II: 10,000 more asteroids

Details The Spitzer Asteroid Catalog II: 10,000 more asteroids The Spitzer Asteroid Catalog II: 10,000 more asteroids

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007sptz.prop40116t&link_type=abstract

Spitzer Proposal ID #40116

Computer Science

Scientific paper

We propose here to continue building the Spitzer Asteroid Catalog by identifying, extracting, cataloging, and analyzing serendipitous observations of asteroids in the Spitzer public archive. Under the auspices of our approved Cycle 3 Archive program, we have created a fully automated pipeline that produces catalogs of fluxes, albedos, and diameters from publicly available Spitzer images. We have recently completed Phase A of that program and catalogued 533 unique asteroid appearances, and present those results for the first time here. We propose in Cycle 4 to extend our analysis to twelve months' worth of newly available IRAC and MIPS imaging data to derive sizes and albedos from 10,000 measurements of well-known asteroids. The costs proposed here are quite low since the infrastructure for this program already exists. Our results will help reveal compositional gradients in the asteroid belt; extend the small end of the asteroid size distribution; look for common properties within asteroid families; improve existing asteroid thermal models; and serve as a fundamental database of asteroid properties for the coming decades. The products of this program will allow rich science investigations into the composition, evolution, and dynamical history of the asteroid belt and be a legacy of the Spitzer Space Telescope for decades to come. The results will be published in refereed papers and in NASA's peer-reviewed Planetary Data System.

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