EXTREME AO OBSERVATIONS OF TWO TRIPLE ASTEROID SYSTEMS WITH SPHERE

@article{Yang2016EXTREMEAO,
  title={EXTREME AO OBSERVATIONS OF TWO TRIPLE ASTEROID SYSTEMS WITH SPHERE},
  author={B. Yang and Zahed Wahhaj and Laur{\`e}ne Beauvalet and Franck Marchis and Christophe Dumas and Micha{\"e}l Marsset and Eric L. Nielsen and Fr{\'e}d{\'e}ric Vachier},
  journal={The Astrophysical Journal Letters},
  year={2016},
  volume={820}
}
We present the discovery of a new satellite of asteroid (130) Elektra—S/2014 (130) 1—in differential imaging and in integral field spectroscopy data over multiple epochs obtained with Spectro-Polarimetric High-contrast Exoplanet Research/Very Large Telescope. This new (second) moonlet of Elektra is about 2 km across, on an eccentric orbit, and about 500 km away from the primary. For a comparative study, we also observed another triple asteroid system, (93) Minerva. For both systems, component… 
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