Accession Number:

AD0725931

Title:

The Effect of Repeated Close Approaches to Jupiter on Short-Period Comets,

Descriptive Note:

Corporate Author:

OSLO UNIV (NORWAY) INST OF THEORETICAL ASTROPHYSICS

Personal Author(s):

Report Date:

1969-12-29

Pagination or Media Count:

7.0

Abstract:

The effect of repeated close approaches to Jupiter on the orbital distribution of short-period cometary orbits is studied. It is shown that the orbital distribution is changed considerably during a few hundred years. The evolution of the orbits due to close approaches to Jupiter does not bring the orbital distribution into a better agreement with the corresponding observed distribution. A retrograde group of comets is found to be somewhat more stable than a corresponding direct group. Thus, the fact that no retrograde comets have been observed cannot be caused by a selective effect of repeated close encounters to Jupiter. It is concluded that he direct capture of long-period comets cannot be the main source of the short-period comets. he captures must take place mainly from nonparabolic comets, of which a large number have perihelia close to Jupiters orbit. Author

Subject Categories:

  • Celestial Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE