Based on observations made with the 1.52 m telescope at the European Southern Observatory (La Silla, Chile) under the agreement with the CNPq/Observatório Nacional, with the 2.2 m telescope of the Complejo Astronómico El Leoncito (Argentina), which is operated under agreement between the Consejo Nacional de Investigaciones Científicas y Técnicas de la República Argentina and the National Universities of La Plata, Córdoba, and San Juan, Argentina, and with the 1.5 m telescope of the Observatório do Pico dos Dias, operated by the Laboratório Nacional de Astrofísica (Brazil).

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Figure 10 and Tables 1-4 are only available in electronic form at http://www.aanda.org

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...1,

Present address: Max Planck Institute for Solar System Research, Max-Planck-Str. 2, 37191 Katlenburg-Lindau, Germany

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... on-line

http://www.daf.on.br/~lazzaro/Vestoid-Pub/VestoidProj.htm

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... ASTDYS

http://hamilton.dm.unipi.it/cgi-bin/astdys/astibo

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... definition

http://www.psi.edu/pds/resource/mothefam.html

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