Origin of short-period comets

Details Origin of short-period comets Origin of short-period comets

Mar 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992cemda..54...49b&link_type=abstract

Celestial Mechanics and Dynamical Astronomy (ISSN 0923-2958), vol. 54, no. 1-3, p. 49-61.

Astronomy and Astrophysics

Astronomy

14

Astronomical Models, Comets, Oort Cloud, Celestial Mechanics, Solar System Evolution, Terrestrial Planets

Scientific paper

Reasons for interest in the origin of short-period comets and the difficulties of computing their long-term dynamical evolution are reviewed. The relative advantages of a source region in an extended 'inner core' of the Oort cloud or a compact 'comet belt' just beyond the planetary system are finely balanced, and it is premature to consider the problem solved. A complication is that some comets belonging to the Jupiter family may be part of a time-dependent system, possibly the remains of a giant comet such as Chiron which could have been part of the system about 10,000 yr ago. The origin of short-period comets plays a pivotal role in many areas of solar system science: planet formation, the source of water (possibly life) on the terrestrial planets, the cratering record on the terrestrial planets and satellites of the outer planets, and the environmental impact posed by massive bodies and their decay products in the earth's near-space environment.

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