Physical properties of ESA Rosetta target asteroid (21) Lutetia: Shape and flyby geometry

  title={Physical properties of ESA Rosetta target asteroid (21) Lutetia: Shape and flyby geometry},
  author={Beno{\^i}t Carry and Mikko Kaasalainen and C{\'e}dric Leyrat and William J. Merline and Jack Drummond and Albert Conrad and H. Weaver and Peter M. Tamblyn and Clark R. Chapman and Christophe Dumas and F. Colas and Julian Christou and Elisabetta Dotto and Davide Perna and Sonia Fornasier and Laurent Bernasconi and Roger E. Behrend and Fr{\'e}d{\'e}ric Vachier and Agnieszka Kryszczyńska and Magdalena Polińska and Marcello Fulchignoni and R. Roy and Ram{\'o}n Naves and R. Poncy and Paul A. Wiggins},
  journal={arXiv: Earth and Planetary Astrophysics},
Aims. We determine the physical properties (spin state and shape) of asteroid (21) Lutetia, target of the ESA Rosetta mission, to help in preparing for observations during the flyby on 2010 July 10 by predicting the orientation of Lutetia as seen from Rosetta. Methods. We use our novel KOALA inversion algorithm to determine the physical properties of asteroids from a combination of optical lightcurves, disk-resolved images, and stellar occultations, although the latter are not available for… 

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