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Asteroid 1986 DA - Radar evidence for a metallic composition (1991)

Chandler, J. F. ; Hine, A. A. ; Campbell, D. B. ; [et al.]

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Publication Date: 2011-08-19

Description: Echoes from the near-earth object 1986 DA show it to be significantly more reflective than other radar-detected asteroids. This result supports the hypothesis that 1986 DA is a piece of NiFe metal derived from the interior of a much larger object that melted, differentiated, cooled, and subsequently was disrupted in a catastrophic collision. This 2-kilometer asteroid, which appears smooth at centimeter to meter scales but extremely irregular at 10- to 100-meter scales, might be (or have been a part of) the parent body of some iron meteorites.

Keywords: LUNAR AND PLANETARY EXPLORATION

Type: Science (ISSN 0036-8075); 252; 1399-140

Format: text

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