PI: Michael Mommert, Northern Arizona U., Michael.Mommert@nau.edu
Address: Physics Department, PO Box 6010, Flagstaff, AZ 86011 US
CoI: Jessica Agarwal, MPI for Solar System Research
Title: Characterizing the Role of Ultra-Fast Rotation in Active Asteroid P/2012 T1
Abstract: Active asteroids are putatively asteroidal bodies that show sudden or persistent activity for a variety of reasons. We propose for one night of SOAR Goodman observations in order to investigate the nature of active asteroid 2012~T1, put constraints on its shape and composition, and search for a debris trail and fragments around the target. 2012~T1 has been observed to have a dust coma during its 2012/13 perihelion passage in agreement with activity from sublimation of ices, but no accelerating gas could be detected spectroscopically. This leads us to suspect that the gas drag force may have been supported by rapid rotation, lowering the effective gravity. We seek to confirm this hypothesis by measuring its rotational period and aspect ratio. Furthermore, we will constrain its composition using spectrophotometry and perform a deep search for a debris tail and fragments around the target. Our observations take full advantage of the favorable viewing conditions from the Southern hemisphere during the target's opposition and provide a perfect science case for SOAR.
Program Type: Standard/Solar System
Run 1 (2017A): SOAR/Goodman -- 1n on Jul 27 2017
National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360