The boundary of the solar system

Details The boundary of the solar system The boundary of the solar system

Sep 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984natur.311...38s&link_type=abstract

Nature (ISSN 0028-0836), vol. 311, Sept. 6, 1984, p. 38, 39.

Physics

20

Orbital Mechanics, Solar System, Comets, Oort Cloud, Orbit Perturbation, Orbital Elements, Tides

Scientific paper

The shape of the boundary of the Solar System, defined as the surface within which the gravitational attraction of the Sun, rather than that of the rest of the Galaxy, controls the orbital motion of bodies such as planets and comets, has been determined. Outside of this surface, the dominant factors are the radial tides due to the galactic centre and, especially, the vertical tides caused by the galactic disk. Orbits which are direct with respect to the galactic plane, have a boundary which differs from that for retrograde orbits, both being 10 - 20% oblate and both larger than the, usually assumed, present Oort cloud. The surface may have been the boundary of the early cloud of comets which was later reduced by the passages of stars and molecular clouds.

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