The Effects of a Variable Torque on Neptune's Satellite Nereid

Details The Effects of a Variable Torque on Neptune's Satellite Nereid The Effects of a Variable Torque on Neptune's Satellite Nereid

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aps..osf.c3005h&link_type=abstract

American Physical Society, Joint Fall 2010 Meeting of the APS Ohio Section and AAPT Appalachian and Southern Ohio Sections, Octo

Physics

Scientific paper

Neried is a small satellite of Neptune orbiting in a highly elliptical orbit. As Nereid is most likely a non-spherical object, we use a computer model to demonstrate how Nereid's highly elliptical orbit gives rise to a variable torque large enough to affect its rotation. We feel this variable torque and consequent perturbations may explain the measured variations in Nereid's brightness. Performing simulations changing such variables as Nereid's obliquity, shape, and spin rate we are able to produce active and inactive time periods of oscillation that may provide some insight into visible observations.

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