Title

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

Authors

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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