共 52 条
[51]
ZEIGLER KW, 1990, MINOR PLANET B, V17, P1
[52]
[No title captured]
ASTEROID-1986DA - RADAR EVIDENCE FOR A METALLIC COMPOSITION
被引：70
作者：
OSTRO, SJ
CAMPBELL, DB
CHANDLER, JF
HINE, AA
HUDSON, RS
ROSEMA, KD
SHAPIRO, II
机构：
[1] HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138
[2] NATL ASTRON & IONOSPHERE CTR,ARECIBO,PR 00613
[3] WASHINGTON STATE UNIV,DEPT ELECT & COMP ENGN,PULLMAN,WA 99164
[4] CORNELL UNIV,NATL ASTRON & IONOSPHERE CTR,ITHACA,NY 14853
来源：
关键词：
D O I：
10.1126/science.252.5011.1399
中图分类号：
O [数理科学和化学];
P [天文学、地球科学];
Q [生物科学];
N [自然科学总论];
学科分类号：
07 ;
0710 ;
09 ;
摘要：
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.
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页码：1399 / 1404
页数：6
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