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Near-Earth Asteroid 2005 CR37: Radar images and photometry of a candidate contact binary |
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| Authors: | Lance AM Benner Michael C Nolan Jon D Giorgini Alan W Harris Jean-Luc Margot |
| Institution: | a Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109, USA b National Astronomy and Ionosphere Center, Arecibo Observatory, HC3 Box 53995, Arecibo, PR 00612, USA c Carbuncle Hill Observatory, P.O. Box 946, Coventry, RI 02816, USA d Space Science Institute, 4603 Orange Knoll Avenue, La Canada, CA 91011, USA e University of Maine at Farmington, 39 High Street, Preble Hall, Farmington, ME 04938, USA f Department of Astronomy, Cornell University, Ithaca, NY 15853, USA |
| Abstract: | Arecibo (2380 MHz, 13 cm) radar observations of 2005 CR37 provide detailed images of a candidate contact binary: a 1.8-km-long, extremely bifurcated object. Although the asteroid's two lobes are round, there are regions of modest topographic relief, such as an elevated, 200-m-wide facet, that suggest that the lobes are geologically more complex than either coherent fragments or homogeneous rubble piles. Since January 1999, about 9% of NEAs larger than ∼200 m imaged by radar can be described as candidate contact binaries. |
| Keywords: | Asteroids Radar Surfaces asteroids Asteroids composition |
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