Orbital structure of a meteoric complex in a vicinity of the Earth's orbit by Kazan meteor radar. Types of meteor orbits

In the given work, the data of meteor radar observation from August to November of 1986 are resulted. The conditions of observation have defined some types of orbits: internal orbits with aphelion distance Q∼1 AU and with a wide spectrum of perihelion distances and external orbits with perihelion distance q∼1 AU and with a wide spectrum of aphelion distances. The majority of all observed orbits are close to circular orbits for which Q∼1 AU and q∼1 AU. Three-dimensional maps of meteor microstream distribution and numbers of meteors in them by perihelion, by aphelion distances and by inclinations are constructed. Orbital parameters of the most significant meteor streams that have been found out are presented.