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The relationship of active comets, ``extinct'' comets, and dark asteroids
Cruikshank, D. P.; Tholen, D. J.; Hartmann, W. K.
Spectrophotometric data on groups of asteroids in different types of orbits reveal different distributions of spectral properties, depending on whether the orbits are cometary or noncometary. In a list of 10 asteroids frequently suggested on purely dynamical grounds to be extinct or dormant comets, all have properties suggestive of spectral classe…
Ultraviolet spectrophotometry of comet Giacobini-Zinner during the ICE encounter
Feldman, P. D.; A'Hearn, M. F.; Schleicher, D. G. +8 more
A program of ultraviolet spectrophotometry using the International Ultraviolet Explorer (IUE) Observatory was carried out in support of the International Cometary Explorer (ICE) mission. The H 2O production rate was monitored from 1985 June to October. Between 1985 September 9 and 12, the spatial and temporal variation and abundance (or…