非常年轻的小行星（1270）Datura的旋转分辨光谱
Rotation-Resolved Spectroscopy of a Very Young Asteroid, (1270) Datura
摘要：
（1270）曼陀罗是一个非常年轻的小行星群中最大的成员，该小行星群被认为在0.45百万年前破裂。光变曲线和旋转分辨反射光谱（0.6 μ m- 1.0 μ m）进行了观察，以找到“新鲜”的表面。我们的数据显示，沿旋转相位没有显着的光谱变化。表明空间风化程度的0.95微米吸收带的深度与老的S型小行星相似。这表明，在这个波长范围内的反射光谱变化迅速，并饱和的深度0.95微米的吸收小于0.45百万年的主带环境。
英文摘要：
(1270) Datura is the largest member of a very young asteroid cluster that was thought to be broken-up 0.45 Myr ago. The light-curve and the rotation-resolved reflectance spectra (0.6 um - 1.0 um) were observed in order to find "fresh" surface. Our data show no significant spectral variation along the rotation phase. The depth of the 0.95 um absorption band, which indicates the degree of space weathering, was similar to that of an old S-type asteroid. This suggests that the reflectance spectrum in this wavelength range changes rapidly and saturates the depth of the 0.95 um absorption in less than 0.45 Myr in the main belt environment.
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