Albedo heterogeneity on the surface of (1943) Anteros |
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Authors: | Joseph Masiero |
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Institution: | Institute for Astronomy, University of Hawaii, 2680 Woodlawn Dr., Honolulu, HI 96822, United States Jet Propulsion Lab, California Institute of Technology, 4800 Oak Grove Dr., MS 264-767, Pasadena, CA 91106, United States |
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Abstract: | We have investigated the effect of rotation on the polarization of scattered light for the near-Earth asteroid (1943) Anteros using the Dual Beam Imaging Polarimeter on the University of Hawaii’s 2.2 m telescope. Anteros is an L-type asteroid that has not been previously observed polarimetrically. We find weak but significant variations in the polarization of Anteros as a function of rotation, indicating albedo changes across the surface. Specifically, we find that Anteros has a background albedo of pv = 0.18 ± 0.02 with a dark spot of pv < 0.09 covering <2% of the surface. |
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Keywords: | Asteroids Surfaces Polarimetry |
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