Search for binary asteroids using Lick, Keck and VLT Adaptive Optics systems: new candidates, orbits and dynamical models

Details Search for binary asteroids using Lick, Keck and VLT Adaptive Optics systems: new candidates, orbits and dynamical models Search for binary asteroids using Lick, Keck and VLT Adaptive Optics systems: new candidates, orbits and dynamical models

Apr 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003eaeja....11985m&link_type=abstract

EGS - AGU - EUG Joint Assembly, Abstracts from the meeting held in Nice, France, 6 - 11 April 2003, abstract #11985

Physics

Optics

Scientific paper

Our group started a search program for binary asteroids in 2000, using Adaptive Optics systems on the Lick-3m, Keck-10m, and VLT-8m telescopes. Several techniques such as appulse observations (see http://astron.berkeley.edu/˜fmarchis/Science/TNOs_Appulse/), Laser Guide Star observations and direct imaging were used to observe more than 80 main-belt asteroids, 14 Trojans and 4 trans-neptunian objects. Among them we have identified as binary objects, four main-belt asteroids (22,87,90,121), one TNO (1996 TC36). A search amongst Trojan asteroids did not result in any candidates. Additional main-belts candidates may be confirmed in the following weeks. We will derive limits on the fraction of binary systems from our data. For some binary asteroids, such as 22 Kalliope, our observations span enough time to permit the determination of accurate orbital elements. We will present a dynamical model for the companion orbit of 22 Kalliope, which gives direct information on the internal structure of Kalliope itself.

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