Possible meteoroid streams associated with (69230) Hermes and 2002 SY50

Details Possible meteoroid streams associated with (69230) Hermes and 2002 SY50 Possible meteoroid streams associated with (69230) Hermes and 2002 SY50

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004em%26p...95....5j&link_type=abstract

Earth, Moon, and Planets, Volume 95, Issue 1-4, pp. 5-10

Astronomy and Astrophysics

Astronomy

2

Asteroids, Meteoroid Streams

Scientific paper

The orbits of (69230) Hermes and 2002 SY50 are similar and the Earth approaches both of them twice: at the end of October the local orbital minimum distances are smaller than 0.007 AU, and at the end of April the distances are smaller than 0.04 AU. This gives us opportunities to observe the meteors associated with these asteroids. Using the geocentric parameters of the orbital close encounters (the theoretical radiants) and our D N distance function (Valsecchi et al. Mon. Not. R. Astron. Soc. 304 (1999) 743), we searched for meteoroids originated by Hermes and 2002 SY50. A search among 1830 good quality photographic meteors gave negative results: we found no meteor dynamically similar to Hermes or 2002 SY50. In a second search, done in a set of 62150 radio meteors, we applied two methods (M1, M2) and in both cases we found two streams; the streams found with the M1 method had 43 and 30 members, those found with the M2 method had 39 and 14 members. However, these results do not look convincing, due to the small number of common members in the corresponding streams. We therefore conclude that amongst the IAU meteors used in our search there are no compact streams associated with Hermes and 2002 SY50.

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