Mineralogical characterization of near-Earth Asteroid (1036) Ganymed

被引：8
作者：
Fieber-Beyer, Sherry K. [1 ]
Gaffey, Michael J. [1 ]
Abell, Paul A. [2 ]
机构：
[1] Univ N Dakota, Dept Space Studies, Grand Forks, ND 58202 USA
[2] NASA, Lyndon B Johnson Space Ctr, Houston, TX 77058 USA
来源：
ICARUS | 2011年 / 212卷 / 01期
关键词：
Asteroids; Near-Earth Objects; Composition; Infrared observations; Mineralogy; MAIN-BELT; REFLECTANCE SPECTRA; SPECTROSCOPIC SURVEY; PORTALES VALLEY; INFRARED PHOTOMETRY; ORDINARY CHONDRITE; METEORITE BRECCIA; SURFACE MATERIALS; COLOR VARIATIONS; IRON-METEORITES;
D O I：
10.1016/j.icarus.2010.12.013
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present a mineralogical assessment of near-Earth Asteroid, (1036) Ganymed, using data obtained May 18, 2006 UT combined with 24 Color Asteroid Survey data to cover the spectral interval of 0.3-2.45 mu m. Results of the analysis indicate (1036) Ganymed is an S (VI) asteroid with a surface silicate assemblage consisting primarily of orthopyroxene, (Fs(23(+/- 5))Wo(3(+/- 3))), consistent with calculated band centers and band area ratios (BAR). (1036) Ganymed appears to be once part of a large mesosiderite containing howardite, eucrite, and diogenite (HED) pyroxenes mixed with metal that was broken apart and dispersed. The calculated composition of the average pyroxenes in the surface material of (1036) Ganymed is consistent with mesosiderite pyroxenes, in particular the diogenites. A second possibility could be (1036) Ganymed is not yet represented in the meteorite collection. Our investigation has confirmed Ganymed is not a parent body of the ordinary chondrites and is not genetically related to (433) Eros. (C) 2011 Elsevier Inc. All rights reserved.
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收藏
页码：149 / 157
页数：9
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