Meteoroid streams associated with Apollo asteroids: evidence from the Adelaide radar orbit surveys

Title:

Meteoroid streams associated with Apollo asteroids: evidence from the Adelaide radar orbit surveys

Creator:

Olsson-Steel, Duncan

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:3e9e500c-82bd-4a9a-a5f2-b35fa58d3764
uuid:3e9e500c-82bd-4a9a-a5f2-b35fa58d3764

Subject:

Apollo asteroids, meteoroid streams, and meteor orbits

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

Since the discovery of Phaethon (the 'Geminid asteroid') in 1983 there has been renewed interest in the association of meteor showers with Earth-approaching asteroids. In the past the existence of several streams associated with different asteroids (in particular Adonis, Apollo, Hermes and Oljato) has been suggested but not proven. Here the 3759 meteor orbits determined at Adelaide in the 1960's have been compared to the orbits of all known Aten-Apollo-Amor asteroids using a new and powerful search technique. Strong evidence is found for streams associated with Apollo-type asteroids Icarus, Hermes, Adonis, Oljato, Hephaistos, 5025 P-L, 1982 TA, and 1904 KB;, the final five in this list may be members of the Taurid-Arietid complex, as is Comet P/Encke. No stream associated with 1862 Apollo was identified, but this may be due to the lack of observations at the appropriate solar longitude. No streams associated with any Aten or Amor asteroid were found: this may be due to the limited detectability of their meteors, if they exist, because of their low geocentric velocities. In general streams were discovered for all asteroids coming within 0.1 AU of the Earth, having radiants observable from Adelaide and atmospheric velocities above about 22 km/sec : this suggests that meteoroid streams are a general feature of Earth-approaching asteroids.

Language:

Czech

Rights:

http://creativecommons.org/publicdomain/mark/1.0/
policy:public

Coverage:

125-129

Source:

Publications of the Astronomical Institute of the Academy of Sciences of the Czech Republic | 1987 Volume:63-70 | Number:67

Harvested from:

CDK

Metadata only:

false