Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994a%26a...288..330h&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 288, no. 1, p. 330-334
Astronomy and Astrophysics
Astrophysics
12
Hyperbolic Trajectories, Meteoroids, Orbital Elements, Astronomical Catalogs, Data Bases, Data Correlation, Data Reduction, Temporal Distribution
Scientific paper
Analysis of 2910 photographic meteor orbits collected in the International Astronomical Union (IAU) Meteor Data Center in Lund from different catalogs shows that the vast majority of the 347 hyperbolic orbits with e greater than 1 and a less than 0 are subject to erroneous determination of their heliocentric velocity or other parameters, and approximately 50 percent of them belong to the known meteor showers. The analysis of meteors from the most precise Harvard catalog and their comparison with the other data, separately for the extreme values of the excess of hyperbolic velocities sets the frequency limit for hyperbolic meteors, with the excess corresponding to the possible interstellar meteors, to 2 x 10-3. The average velocity excess of hyperbolic meteors is one order lower than expected for interstellar meteors, moreover neither any concentration of radiants to the Sun's apex, nor any distribution following the motion of interstellar material has been found.
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