NOAO >   Observing Info >   Approved Programs >   2014B-0068

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Proposal Information for 2014B-0068


PI: William Romanishin, U. of Oklahoma (Emeritus Professor), wromanishin@ou.edu
Address: Physics Department, 440 W. Brooks St., Norman, OK

Title: Shapes of Hilda ``Asteroids"

Abstract: I will use optical CCD photometric lightcurve observations of Hilda ``asteroids" to study their shapes and estimate densities. Although the Hildas are called ``asteroids", recent work suggests that these objects may have formed far beyond Jupiter and then were captured into their present orbits at the stable 3:2 resonance of the Sun-Jupiter system. Thus, these objects may be closer in physical nature to icy comets than to rocky/ metallic asteroids. The scientific goal of the work proposed here is to derive reliable shapes and density estimates for a sample of ~10 or more Hildas to compare with data for Jovian Trojans, comets, main belt asteroids, Centaurs, and KBOs. Density estimate for the Hilda class of objects will help elucidate the origin of this group of objects and the ``big picture" of the history of minor bodies in the solar system.


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NOAO >   Observing Info >   Approved Programs >   2014B-0068

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