Selected catalog of highly eccentric orbits of meteoroids from archived data of radio observations of faint meteors in Kharkiv, Ukraine

Abstract

Full Kharkiv archival data from 1972 to 1978 have a volume of almost 250 thousand meteor orbits. Of these, we used a sample of sporadic meteoroids with a volume of 159319 orbits. We selected 214 meteor orbits with the aphelia exceeding 100 AU. The greatest aphelion distance for them was 1997.7 (near 2000) AU. At the same time, meteoroids in these orbits invaded the Earth’s atmosphere and burned, creating ionized meteor tracks. The sensitivity of the Kharkiv orbital radar made it possible to record radio meteors up to +12 ​M from meteoroids in the mass range 10−3-10−6 g. Thus, the selected catalog of 214 meteor orbits represents a kind of toolkit for testing remote areas of the Solar system associated with objects called sednoids. The selected catalog of 214 highly eccentric orbits of weak radio meteors up to +12 ​M is presented in the form of tables with a description of the data. Distributions by various parameters for 214 orbits and 159319 orbits are given.The mapping of the annual cycle of observations may be obtained across a catalog of 6743 sporadic meteor orbits, which were published by Voloshchuk, Kolomiyets, and Cherkas in 2018. It is planned to transfer the Kharkiv archived meteor radar data to the IAU Meteor Data Center using experience of transferring archived data of radio observations of past years, received at the Hissar Observatory in Tajikistan which was published by Narziev in 2018.