Asteroid (1620) Geographos as a possible parent body for a meteor stream

Details Asteroid (1620) Geographos as a possible parent body for a meteor stream Asteroid (1620) Geographos as a possible parent body for a meteor stream

Nov 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001esasp.495...63r&link_type=abstract

In: Proceedings of the Meteoroids 2001 Conference, 6 - 10 August 2001, Kiruna, Sweden. Ed.: Barbara Warmbein. ESA SP-495, Noordw

Mathematics

Probability

2

Minor Planets, Meteor Streams, Parent Bodies

Scientific paper

Numerous model streams having different schemes and times of ejection were considered. It was obtained that model meteoroid streams ejected with high velocities (up to 1 km/s) can approach the Earth's orbit twice, once before (February-March) and once after (August) perihelion. There were found 44 correlated meteor orbits (in databases IAU MDC and MSSWG) from the both showers and a taxon structure was derived for them. The distribution of ejection velocity vectors looks like originated at impact of a catching up small body, but the time of the collision remains unknown. So, with the high probability Geographos is the parent body for a meteor stream, generating twin meteor showers observable at the Earth: Spring and Summer.

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