Small comets: Naked-eye visibility

Autor: A. J. Dessler, Bashar Rizk
Rok vydání: 1997
Předmět:
Zdroj: Geophysical Research Letters. 24:3121-3124
ISSN: 0094-8276
DOI: 10.1029/97gl03185
Popis: We investigate an obvious consequence of the small-comet hypothesis. We find that the 30-ton cloud of water-ice particles formed by a small comet would survive long enough to be an unmistakably bright object. The visual magnitude of such clouds would be between that of a bright star and the full Moon. A whole-Earth small-comet flux of 20/min implies the sudden appearance of at least two bright patches of light every five minutes. The two-hour periods after sunset and before sunrise ought to produce the most spectacular sightings—intermittent punctuations of bright rapidly-moving points of light. Because such events are not reported, we conclude that this class of object does not exist in detectable numbers.
Databáze: OpenAIRE