The NEO (175706) 1996 FG3 in the 2-4 mu m spectral region: Evidence for an aqueously altered surface

    Authors

    A. S. Rivkin; E. S. Howell; R. J. Vervack; C. Magri; M. C. Nolan; Y. R. Fernandez; A. F. Cheng; M. A. Barucci;P. Michel

    Comments

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    Abbreviated Journal Title

    Icarus

    Keywords

    Asteroids; Asteroids, Composition; Asteroids, Surfaces; Spectroscopy; SMALL BINARY ASTEROIDS; NEAR-EARTH ASTEROIDS; C-CLASS ASTEROIDS; PHYSICAL-CHARACTERIZATION; INFRARED-SPECTROSCOPY; ORIGIN; TARGETS; WATER; LIGHTCURVES; CALIBRATION; Astronomy & Astrophysics

    Abstract

    We present observations of the binary near-Earth Asteroid (175706) 1996 FG3 in the 2-4 mu m spectral region, obtained on multiple nights using the SpeX instrument on the NASA Infrared Telescope Facility (IRTF). We find evidence for an absorption band of similar to 5-10% (depending on the night and details of continuum choice), diagnostic for hydrated/hydroxylated minerals on the asteroid surface. This demonstrates that the optical surface of 1996 FG3 has not been heated to dehydrating temperatures. Sample-return missions targeting 1996 FG3 will likely find relatively fresh areas for sampling. (C) 2013 Elsevier Inc. All rights reserved.

    Journal Title

    Icarus

    Volume

    223

    Issue/Number

    1

    Publication Date

    1-1-2013

    Document Type

    Article

    Language

    English

    First Page

    493

    Last Page

    498

    WOS Identifier

    WOS:000315977600035

    ISSN

    0019-1035

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