Composition of hydrated near-Earth object (100085) 1992 UY4 |
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| Authors: | Eric L Volquardsen Andrew S Rivkin |
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| Institution: | a Institute for Astronomy, University of Hawaii, Hilo, HI 96720, USA
b Applied Physics Laboratory, Johns Hopkins University, Laurel, MD 20723, USA |
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| Abstract: | Near-infrared spectra of the near-Earth object (100085) 1992 UY4 are similar to those of P-type asteroids, providing a fitted geometric albedo of 0.052±0.005 and an effective diameter of 1.68±0.08 km. This object, with a likely outer-belt origin, also exhibits a 3-μm absorption feature with a band depth of 3%±1%, corresponding to a regolithic bulk hydrogen-to-silicon ratio of 0.30±0.05. The bulk of this hydrogen seems to be present in H2O-dominated minerals. |
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| Keywords: | Asteroids Asteroids composition Spectroscopy Asteroids surfaces |
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