Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994avest..28..107k&link_type=abstract
Astronomicheskij Vestnik (ISSN 0320-930X), vol. 28, no. 3, p. 107-115
Astronomy and Astrophysics
Astronomy
Interplanetary Dust, Meteoroids, Orbit Calculation, Orbit Perturbation, Solar Orbits, Aphelions, Astronomical Catalogs, Gravitational Effects, Particle Collisions, Perihelions, Poynting-Robertson Effect
Scientific paper
Using the catalog data of radio, television, and photographic observation of faint meteors, a new class of orbits (C-orbits) is defined. For the C-orbits the angle between the ecliptic plane and the line of apsides corresponds to the condition sin2 beta greater than 0.4 and the aphelion distance q' less than 4 A.U. The origin of corresponding meteor particles is associated with the disintegration of long-period or nearly parabolic cometary nuclei and with a long-time Poynting-Robertson (P-R) deceleration. Secular gravitational perturbations from the planets vary within a wide range of the eccentricity e, inclination i and perihelion distance q for the C-orbits; the perihelion argument can not go out from the extreme value 90 +/- 50.8 or 270 +/- 50.8 degrees. The superposition of secular gravitational perturbations (mainly from Jupiter) and P-R effect on the C-orbits leads to a slowly persistent decreasing of the semimajor axis, cyclically increasing of e up to unity and decreasing of q down to zero. The collision probabilities of particles for C-orbits with the Earth is more then two times less than the one for usual orbits. Therefore, we conclude that the C-orbits are characteristic for relatively small (submillimetric) particles. They can form a certain source of the dust cloud around the Sun.
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