Stellar occultations by planetary rings: 3 July 1989 28 SGR occultation by Saturn

摘要

The near infrared observations of the 3 Jul. 1989 occultation of 28 Sagittarii by Saturn and its rings made from seven different telescopes spread around the world were reduced and synthesized. These observations were combined with Voyager data to study the dynamical state of Saturn's rings. This unique event, which occurred eight years after the Voyager flybys, provides a temporal baseline over which kinematical and dynamical phenomena within the rings may be examined in detail.