K. J. Meech, University of Hawaii; and M. J. S. Belton, Kitt Peak National Observatory, report that (2060) Chiron has a coma. Observations made using a CCD at the prime focus of the KPNO 4-m telescope on Apr. 10 UT in nearly photometric conditions showed the feature, which was of very low surface brightness, extending mostly to the southeast for about 5". The seeing was such that the FWHM image of Chiron had a diameter of 0".9, and the very approximate Mould r mag was 16.4. The coma had the same general appearance on Apr. 11 in slightly poorer seeing.
International Astronomical Union Circular
- Pub Date:
- April 1989