2. Observatory, University of Helsinki, P.O. Box 14, FIN-00014, Finland 3. Lowell Observatory, 1400 West Mars Hill Road, Flagstaff, AZ, 86001, USA 4. Departamento Astronomia, Facultad Ciencias, Iguá 4225, 11400, Montevideo, Uruguay
Abstract:
We present a web service called TNOEPH ( http://asteroid.lowell.edu/)for ephemeris uncertainty prediction and dynamical classification ofshort-arc trans\-neptunian objects (TNOs). User-supplied observations are transformed to a rigorous sky-plane uncertainty map using the technique of statistical orbital ranging. We show examples of thegrowth of ephemeris uncertainty with time, and give the probabilities ofdifferent dynamical classifications for a few short-arc TNOs.