Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Asteroid models reconstructed from the Lowell Photometric Database and
  WISE data   Information about the spin state of asteroids is important for our
understanding of the dynamical processes affecting them. However, spin
properties of asteroids are known for only a small fraction of the whole
population. To enlarge the sample of asteroids with a known rotation state and
basic shape properties, we combined sparse-in-time photometry from the Lowell
Observatory Database with flux measurements from NASA's WISE satellite. We
applied the light curve inversion method to the combined data. The thermal
infrared data from WISE were treated as reflected light because the shapes of
thermal and visual light curves are similar enough for our purposes. While
sparse data cover a wide range of geometries over many years, WISE data
typically cover an interval of tens of hours, which is comparable to the
typical rotation period of asteroids. The search for best-fitting models was
done in the framework of the Asteroids@home distributed computing project. By
processing the data for almost 75,000 asteroids, we derived unique shape models
for about 900 of them. Some of them were already available in the DAMIT
database and served us as a consistency check of our approach. In total, we
derived new models for 662 asteroids, which significantly increased the total
number of asteroids for which their rotation state and shape are known. For
another 789 asteroids, we were able to determine their sidereal rotation period
and estimate the ecliptic latitude of the spin axis direction. We studied the
distribution of spins in the asteroid population. We revealed a significant
discrepancy between the number of prograde and retrograde rotators for
asteroids smaller than about 10 km. Combining optical photometry with thermal
infrared light curves is an efficient approach to obtaining new physical models
of asteroids.

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The categories of this paper are: cmp-lg
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The categories of this paper are: cs
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The categories of this paper are: q-alg
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The categories of this paper are: hep-ph
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The categories of this paper are: plasm-ph
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The categories of this paper are: funct-an
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The categories of this paper are: adap-org
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The categories of this paper are: nucl-ex
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The categories of this paper are: hep-th
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The categories of this paper are: quant-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: alg-geom
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The categories of this paper are: nucl-th
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The categories of this paper are: eess
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The categories of this paper are: math-ph
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The categories of this paper are: comp-gas