2014 programme

Sun 15:30-16:00

Asteroidal Occultations: Profiles, 3D-Models, discoveries, and data archiving

Dave Herald


Multiple chord observations of asteroid occultations can produce profiles of asteroids accurate to the 1-km range. The 3D asteroid models of DAMIT and ISAM (derived from mainly amateur light curve measurements) can be refined using the occultation determined profiles.

As a result, two observational disciplines collaborate to produce results which can not be bettered unless the asteroid is visited by spacecraft - an exercise not undertaken lightly or cheaply. Asteroid occultation observations can produce unexpected results, discover hitherto unknown double asteroids, and discover double stars that have separations in the micro-arcsecond range.

This talk demonstrates and discusses these in the context of recent observations.