PREDNASAJUCI / LECTURER :

Luboš Neslušan

NAZOV / TITLE :

 I. Meteor Data Center of the I.A.U.;
II. Meteoroid streams originating in several long-period comets

ABSTRAKT / ABSTRACT :

The talk consists of two parts: information about the
Meteor Data Center of the IAU which resides at the AsI SAS and about
the last-two-year study of meteoroid streams originating in long-period
comets.
Concerning the second part, we modeled the stream of each studied
comet and followed its dynamical evolution performing the numerical
integration of the orbits of particles, which represented the
meteoroids. In this way, we confirmed or found a relationship of the
studied comets, as parent bodies, with several known meteor showers.
The mean orbit of some of these showers is largely different from the
current orbit of their parent comet. In addition, we discovered two new
showers: December Iota-Ursae Majorids, January Psi-Scorpiids.
Specifically, we dealt with the streams of the following comets
(confirmed or found associated showers are given in the parentheses):
C/1853 G1 (Schweizer) (Gamma-Aquilids #531 and 52 Herculids #605),
C/1992 W1 (Ohshita) (Chi-Andromedids #580 and January Alpha-Ursae
Majorids #606), C/1894 G1 (Gale) (December Iota-Ursae Majorids #1049),
C/1936 O1 (Kaho-Kozik-Lis) (January Psi-Scorpiids #1048), C/1961 T1
(Seki) (December Rho-Virginids #502 and Gamma-Sagittariids #657),
C/1861 G1 (Thatcher) (Lyrids #6), and 109P/Swift-Tuttle (Perseids #7,
49 Andromedids #549, Omicron-Aurigids #696, Omicron-Hydrids #569,
January Beta-Craterids #582, Zeta Cassiopeiids #444, u-Andromedids #507,
and UY Lyncids #705).