SHAPE OF ASTEROID 4769 CASTALIA (1989 PB) FROM INVERSION OF RADAR IMAGES

被引：127

作者：

HUDSON, RS ^{[1
]}

OSTRO, SJ ^{[1
]}

机构：

[1] CALTECH,JET PROP LAB,PASADENA,CA 91109

来源：

SCIENCE | 1994年 / 263卷 / 5149期

关键词：

D O I：

10.1126/science.263.5149.940

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：

The inversion of previously reported, delay-Doppler images of Castalia yields a 167-parameter, three-dimensional shape model that is bifurcated into two distinct, irregular, kilometer-sized lobes. The crevice that separates the lobes has an average depth of between 100 and 150 meters and is oriented roughly perpendicular to the asteroid's longest dimension. The constrained least-squares reconstruction method introduced here can be used to determine the shape, spin vector, and radar-scattering properties of any asteroid or comet for which delay-Doppler images provide sufficient signal-to-noise ratio, orientational coverage, and spatial resolution.

引用

页码：940 / 943

页数：4

共 7 条

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