Abstract:
During the observation of the occultation of the star SAO 158687 by Uranus on March 10, 1977, there occurred an unexpected event which suggests the existence of a hitherto unknown satellite of the planet. On the basis of a model of the occultation geometry, it is found that the estimated diameter of the body will be around 70 km. The visual magnitude of the satellite is estimated to be about 19. The light curve obtained during the occultation of SAO 158687 by Uranus is shown in a graph.
