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Paper detail

Rotation of Comet Hartley 2 from Structures in the Coma

The CN coma structure of the EPOXI mission target, comet 103P/Hartley 2, was observed during twenty nights from September to December 2010. These CN images probe the rotational state of the comet's nucleus and provide a ground-based observational context to complement the EPOXI observations. A dynamically excited cometary nucleus with a changing rotational rate is observed, a characteristic not seen in any comet in the past. The lack of rotational damping during the four-month observing interval places constraints on the interior structure of the nucleus.

preprint2011arXivOpen access
Nalin H. SamarasinhaBeatrice E. A. MuellerMichael F. A'HearnTony L. FarnhamAlan Gersch
astro-ph.EP
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Nalin H. SamarasinhaBeatrice E. A. MuellerMichael F. A'HearnTony L. FarnhamAlan Gersch

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