Remarks on cometary astrometry

Abstract

A statistical examination of the astrometric observations made during the past 20 years indicates that there are generally sufficient data on bright and well-publicized comets. On the other hand, astrometric coverage of fainter objects has recently become a severe problem. In spite of an increase in the number of participating observatories, fewer observatories are making significant contributions. Automated methods have generally improved the quality of observations. The timely communication of observations is also discussed.