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Detection of Water Ice on the Centaur 1997 CU_(26)

Brown, Michael E. and Koresko, Christopher D. (1998) Detection of Water Ice on the Centaur 1997 CU_(26). Astrophysical Journal Letters, 505 (1). L65-L67. ISSN 2041-8205. doi:10.1086/311593.

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We report the detection of the 1.5 and 2.0 μm absorption bands due to water ice in the near-infrared reflection spectrum of the Centaur 1997 CU_(26), which is currently located just outside the heliocentric distance of Saturn. The water ice bands are weaker than those detected on the surface of any other solar system body; the spectrum is well fit with a model surface consisting predominantly of a neutral dark absorbing substance with only ~3% areal coverage of water ice. The spectrum thus appears very different from that of the Centaur 5140 Pholus, although both objects are of similar brightness and are at similar heliocentric distances.

Item Type:Article
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URLURL TypeDescription
Brown, Michael E.0000-0002-8255-0545
Additional Information:© 1998 American Astronomical Society. Received 1998 May 5; accepted 1998 July 2; published 1998 August 24. Data presented herein were obtained at the W. M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the Universities of California, and the National Aeronautics and Space Administration. The observatory was made possible by the generous financial support of the W. M. Keck Foundation. We thank the referee for useful and informative comments.
Group:UNSPECIFIED, UNSPECIFIED, Division of Geological and Planetary Sciences
Funding AgencyGrant Number
W. M. Keck FoundationUNSPECIFIED
Subject Keywords:comets: general; infrared: solar system; minor planets, asteroids
Issue or Number:1
Record Number:CaltechAUTHORS:20120928-155319783
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Official Citation:Detection of Water Ice on the Centaur 1997 CU26 Michael E. Brown and Christopher D. Koresko 1998 ApJ 505 L65
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:34557
Deposited By: Ruth Sustaita
Deposited On:02 Oct 2012 15:31
Last Modified:09 Nov 2021 23:09

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