Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aas...201.4506j&link_type=abstract
American Astronomical Society, 201st AAS Meeting, #45.06; Bulletin of the American Astronomical Society, Vol. 34, p.1172
Astronomy and Astrophysics
Astronomy
1
Scientific paper
Sloan Digital Sky Survey, although optimized for extragalactic science, is significantly contributing to solar system science by producing the largest available database of multi-color photometric measurements for asteroids. The database is public (http://www.sdss.org/science/index.html) and currently contains observations for about 60,000 objects. The main results derived from these early SDSS observations are 1) A measurement of the main-belt asteroid size distribution to a significantly smaller size limit (< 1 km) than possible before. The size distribution resembles a broken power-law, independent of the heliocentric distance. 2) A smaller number of asteroids compared to previous work. In particular, the number of asteroids with diameters larger than 1 km is about 700,000. 3) Asteroid dynamical families, defined as clusters in orbital parameter space, also strongly segregate in color space. Their distinctive optical colors support earlier suggestions that asteroids belonging to a particular family have a common origin. SDSS data indicate that over 90 percent of asteroids belong to families.
Ivezic Zeljko
Juric Mario
Lupton Robert H.
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