Determination of the Orbit of (243)1 and the Mass of 243 Ida Belton, M. J. S. ; Chapman, C. ; Davies, M. E. ; Greenberg, R. ; Klaasen, K. ; Thomas, P. ; Byrnes, D. ; D'Amario, L. ; Synnott, S. ; Merline, W. ; Storrs, A. ; Zellner, B. Abstract Publication: AAS/Division for Planetary Sciences Meeting Abstracts #26 Pub Date: June 1994 Bibcode: 1994DPS....26.2501B