Rotational Dynamics of Europa

@article{Bills2009RotationalDO,
  title={Rotational Dynamics of Europa},
  author={Bruce G. Bills and Francis Nimmo and {\"O}. Karatekin and Tim Van Hoolst and N. Rambaux and Benjamin Levrard and Jacques Laskar},
  journal={Eurosurveillance},
  year={2009},
  pages={119}
}
The rotational state of Europa is only rather poorly constrained at present. It is known to rotate about an axis that is nearly perpendicular to the orbit plane, at a rate that is nearly constant and approximates the mean orbital rate. Small departures from a constant rotation rate and oscillations of the rotation axis both lead to stresses that may influence the location and orientation of surface tectonic features. However, at present geological evidence for either of these processes is… 

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