A belt of moonlets in Saturn’s A ring

Miodrag Sremčević (), Jürgen Schmidt, Heikki Salo, Martin Seiß, Frank Spahn and Nicole Albers
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Miodrag Sremčević: Laboratory for Atmospheric and Space Physics, University of Colorado at Boulder, 392 UCB, Boulder, Colorado 80309-0392, USA
Jürgen Schmidt: Nonlinear Dynamics, University of Potsdam, Am Neuen Palais 10, 14469 Potsdam, Germany
Heikki Salo: University of Oulu
Martin Seiß: Nonlinear Dynamics, University of Potsdam, Am Neuen Palais 10, 14469 Potsdam, Germany
Frank Spahn: Nonlinear Dynamics, University of Potsdam, Am Neuen Palais 10, 14469 Potsdam, Germany
Nicole Albers: Laboratory for Atmospheric and Space Physics, University of Colorado at Boulder, 392 UCB, Boulder, Colorado 80309-0392, USA

Nature, 2007, vol. 449, issue 7165, 1019-1021

Abstract: Propelled to prominence The observation of four propeller-shaped disturbances in Saturn's A ring, detected in two Cassini images taken in 2004, was evidence for the presence of small boulder-sized moons embedded in the ring. There would be more, it was thought. There are more: eight new propeller features have been found in a later Cassini image sequence that covers the complete A ring. The moonlets causing these disturbances have radii of 30 to 70 metres, and may be remnants of the break up of a larger embedded moon that once orbited Saturn's ring at this location.

Date: 2007
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DOI: 10.1038/nature06224

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