Data Set Overview : This data set is intended to include all groundbased asteroid radar detections. These data were collected from the published literature by Steven J. Ostro (1989) [OSTRO1989]. Observations which have not yet been published, or which have been reported only in an abstract, are included in the data set as an entry with blank data fields, for the purpose of informing the data set users of the existence of these detections. As the data from these detections are published, the data are added to this data set in yearly updates. Scientific questions about this data set should be directed to Steven J. Ostro, JPL.  Modification History -------------------- The radar data set was first introduced into PDS at the April 1994 asteroid data sets review, and has been updated yearly since that time. Updates consist in adding entries for asteroid radar detections made since the previous update, and adding full data for detections which have been published since the last update. The 1997 update added radar albedos.   Parameters : An entry for each detection reports radar cross-section, circular polarization, and radar albedo, if known, error values for these parameters, year of observation, and the reference in which the observations were reported.   Processing : No processing has been performed on these data beyond that reported in the published papers from which the data were drawn.   Data : This data set comprises a single data table, 'radar.tab', tabulating the parameters listed above.   Ancillary Data : The references of the papers in which the asteroid radar detections were reported are compiled in the file 'radarref.tab'.

Confidence Level Overview : The confidence level of each data value reported is reflected in the uncertainty value in the same entry. Further information about the observations can be obtained by consulting the original reference for each entry.   Review : This data set underwent formal external review on March 24, 1997.   Data Coverage and Quality : This data set is intended to include all groundbased radar detections of asteroids. It is complete through March 1997.   Limitations : This data set is intended only to collect the data reported in the published literature, as well as to record the existence of unpublished asteroid radar detections.