Comets disguised as asteroids

Details Comets disguised as asteroids Comets disguised as asteroids

May 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994pasp..106..425l&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 106, no. 699, p. 425-435

Astronomy and Astrophysics

Astronomy

15

Asteroids, Comet Heads, Comet Nuclei, Comet Tails, Comets, Asteroid Belts, Astronomical Photometry, Astronomical Spectroscopy, Brightness Distribution, Classifications, Oort Cloud

Scientific paper

Comets and asteroids were previously thought to be two completely distinct groups of solar-system objects, with marked contrast in both physical and dynamical characteristics. A comet is operationally defined by the presence of a coma, while an asteroid has no coma. However, recent observations have shown that comets can sometimes take on asteroidal appearances and even asteroidal photometric behavior. Thus the observational distinction between comets and asteroids is not as clear cut as it once seemed. The possible presence of comets hidden among known asteroids forces us to reconsider the criterion by which we distinguish comets from asteroids and possibly our inventory of both comet and asteroid populations.

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