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Multiplicity in the Jupiter Trojan Population: Low density of 617 Patroclus with Keck LGS AO and Perspective

Authors
  • Franck Marchis
  • D, Hestroffer
  • P, Descamps
  • J, Berthier
  • A H, Bouchez
  • R D, Campbell
  • Jcy, Chin
  • M A, Van Dam
  • S K, Hartman
  • E M, Johnasson
  • R E, Lafon
  • D, Le Mignant
  • I, De Pater
  • P J, Stomski
  • David Summers
  • P L, Wizinovich
  • M H, Wong
Volume
37
Pages
1327–1327
Source
SETI Institute
License
Unknown

Abstract

The system 617 Patroclus, the only binary Trojan known, was discovered in 2001 with the Hokupa a Gemini-8m AO system. Because of their faintness (magnitude in visible mv> 15.5), Trojan asteroids cannot be directly observed by most of the AO systems. In 2004, a Laser Guide Star (LGS) AO system was offered on the Keck-10m. We initiated an observing campaign, recording direct images of the 617 Patroclus double system in broadband filters with the NIRC2 near-infrared camera. The orbital parameters of the ...

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