A polarimetric study of Asteroid 25143 Itokawa

被引：27
|
作者：
Cellino, A
Yoshida, F
Anderlucci, E
Bendjoya, P
Di Martino, M
Ishiguro, M
Nakamura, AM
Saito, J
机构：
[1] Osserv Astron Torino, I-10025 Pino Torinese, TO, Italy
[2] Natl Astron Observ Japan, Mitaka, Tokyo 1818588, Japan
[3] Univ Nice, LUAN, F-06108 Nice, France
[4] JAXA, Inst Space & Astronaut Sci, Sagamihara, Kanagawa 2298510, Japan
[5] Kobe Univ, Nada Ku, Kobe, Hyogo 6578501, Japan
来源：
ICARUS | 2005年 / 179卷 / 02期
关键词：
asteroids; Itokawa; polarimetry;
D O I：
10.1016/j.icarus.2005.08.005
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The near-Earth Asteroid 25143 Itokawa, the target of the Japanese space mission Hayabusa, was observed ill June, 2004 with the Torino photopolarimeter attached at the 2.15 m telescope of the El Leoncito Observatory (Argentina). The degree of linear polarization in five colors was measured over a wide range of phase angles, between 40 degrees and 80 degrees. The data obtained are Sufficient to derive an estimate of the asteroid's albedo of 0.24 +/- 0.01, which is in good agreement with the S-type taxonomic classification of this object. The phase-polarization Curve has been sampled in UBVRI colors, covering a wide range of phase angles that cannot be reached by Earth-based observations of Main Belt asteroids. (c) 2005 Elsevier Inc. All rights reserved.
引用
收藏
页码：297 / 303
页数：7
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