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Rosetta target asteroid 2867 Steins: An unusual E-type asteroid

Weissman, P.R., Hicks, M.D., Abell, P.A., Choi, Y.-J., Lowry, S.C. (2008) Rosetta target asteroid 2867 Steins: An unusual E-type asteroid. Meteoritics & Planetary Science, 43 (5). pp. 905-914. ISSN 1086-9379. E-ISSN 1945-5100. (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided. (Contact us about this Publication)
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http://www.scopus.com/inward/record.url?eid=2-s2.0...

Abstract

ESA's Rosetta spacecraft will fly by main-belt asteroid 2867 Steins on September 5, 2008. We obtained new visible wavelength spectra of 2867 Steins on December 19, 2006 (UT), using the Palomar 5 m telescope and the facility Double Spectrograph. Two sets of spectra, taken ~3 h apart, one half of the rotation period for 2867 Steins, show it to be an E-type asteroid. The asteroid displays a 0.50 micron feature that is considered diagnostic of the E(II) sub-class, but is deeper than any previously observed E-type. This feature is most likely due to the presence of oldhamite (CaS) on the asteroid's surface. Also, the observed Steins spectra are far redder than any other known E-types. There is potential evidence for heterogeneity on hemispheric scales, one side of the asteroid appearing to be significantly redder than the other. No known recovered meteorite sample matches the unusual spectra of 2867 Steins, but the closest analog would be similar to an enstatite achondrite (aubrite). © The Meteoritical Society, 2008.

Item Type: Article
Additional information: Unmapped bibliographic data: LA - English [Field not mapped to EPrints] J2 - Meteorit. Planet. Sci. [Field not mapped to EPrints] AD - Jet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena, CA 91109, United States [Field not mapped to EPrints] AD - Planetary Science Institute, 1700 East Fort Lowell Rd., Tucson, AZ 85719, United States [Field not mapped to EPrints] AD - NASA Johnson Space Center, 2101 NASA Parkway, Houston, TX 77058, United States [Field not mapped to EPrints] AD - Queen's University, Belfast, Astrophysics Research Centre, Department of Physics and Astronomy, Belfast BT7 1NN, United Kingdom [Field not mapped to EPrints] AD - Korea Astronomy and Planetary Science Institute, 61-1 Hwaam dong, Yuseong gu, Daejeon 305-348, South Korea [Field not mapped to EPrints] DB - Scopus [Field not mapped to EPrints]
Subjects: Q Science > QB Astronomy
Divisions: Faculties > Sciences > School of Physical Sciences > Centre for Astrophysics and Planetary Sciences
Depositing User: Stephen Lowry
Date Deposited: 08 Dec 2015 23:02 UTC
Last Modified: 29 May 2019 16:29 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/52300 (The current URI for this page, for reference purposes)
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