Pole and global shape of 25143 Itokawa
Pole and global shape of 25143 Itokawa
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DOI：
10.1126/science.1126574
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发表时间：
2006-06-02
期刊：
影响因子：
56.9
通讯作者：
Hirata, N
中科院分区：
文献类型：
--
作者：
Demura, H;Kobayashi, S;Hirata, N
小行星25143 Itokawa的极点和旋转轴位置是由隼鸟号航天器上的小行星多波段成像相机数据得出的。逆行极位的赤经为90.53度，赤纬为- 66.30度（52000分），在黄道坐标系中相当于128.5度和- 89.66度，误差范围为3.9度。面积0.393平方公里，体积0.018378立方公里，误差范围为5%，三轴长度为535米× 298米× 244米。全球Itokawa揭示了一个回旋镖形状的外观，由两个不同的部分组成，部分是面形的区域和一个狭窄的环结构。
The locations of the pole and rotation axis of asteroid 25143 Itokawa were derived from Asteroid Multiband Imaging Camera data on the Hayabusa spacecraft. The retrograde pole orientation had a right ascension of 90.53 degrees and a declination of - 66.30 degrees ( 52000 equinox) or equivalently 128.5 degrees and - 89.66 degrees in ecliptic coordinates with a 3.9 degrees margin of error. The surface area is 0.393 square kilometers, the volume is 0.018378 cubic kilometers with a 5% margin of error, and the three axis lengths are 535 meters by 298 meters by 244 meters. The global Itokawa revealed a boomerang-shaped appearance composed of two distinct parts with partly faceted regions and a constricted ring structure.