Photometry And Surface Mapping Of Asteroid Itokawa From Hayabusa Nirs Observations

Details Photometry And Surface Mapping Of Asteroid Itokawa From Hayabusa Nirs Observations Photometry And Surface Mapping Of Asteroid Itokawa From Hayabusa Nirs Observations

Sep 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006dps....38.5913k&link_type=abstract

American Astronomical Society, DPS meeting #38, #59.13; Bulletin of the American Astronomical Society, Vol. 38, p.595

Astronomy and Astrophysics

Astronomy

Scientific paper

The near-infrared spectrometer (NIRS) on the Hayabusa spacecraft obtained more than 80,000 spatially resolved 800- to 2200-nm reflectance spectra of 25143 Itokawa between September 12 and November 24, 2005. Spectra were obtained over a range of phase angles from near 0 to 38 degrees, which allowed constructing a photometric model of the asteroid's surface. A strong opposition surge at low phase angles and phase reddening were detected. After a photometric correction of the spectral data using Hapke modeling, we produced an albedo map on Itokawa surface and found a nearly 10% of albedo variation from space weathering, particle size, and/or heterogeneity of the composition.

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