The discovery and dynamical evolution of an object at the outer edge of Saturn’s A ring

The discovery and dynamical evolution of an object at the outer edge of Saturn’s A ring

[Display omitted] •We report the discovery of a sub-km object orbiting near the edge of Saturn’s A ring.•The object’s perturbing effect on the rings has been detectable since May 2012.•There is evidence of a changing orbit and possible disruption in early 2013.•The object could have formed in situ d...

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Veröffentlicht in:Icarus (New York, N.Y. 1962) N.Y. 1962), 2014-07, Vol.236, p.165-168
Hauptverfasser: Murray, Carl D., Cooper, Nicholas J., Williams, Gareth A., Attree, Nicholas O., Boyer, Jeffrey S.
Format: Artikel
Sprache:eng
Schlagworte:
Cassini mission
Disruption
Evolution
Image detection
Orbits
Resonances, orbital
Satellites, dynamics
Saturn, rings
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Beschreibung
Zusammenfassung:[Display omitted] •We report the discovery of a sub-km object orbiting near the edge of Saturn’s A ring.•The object’s perturbing effect on the rings has been detectable since May 2012.•There is evidence of a changing orbit and possible disruption in early 2013.•The object could have formed in situ due to the Janus resonance near the ring edge. We report on the serendipitous discovery of an unresolved, evolving, sub-km-radius object with a semimajor axis
ISSN:0019-1035
1090-2643
DOI:10.1016/j.icarus.2014.03.024