Variation of Leonid maximum times with location of observer

Details Variation of Leonid maximum times with location of observer Variation of Leonid maximum times with location of observer

Nov 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999m%26ps...34..975m&link_type=abstract

Meteoritics & Planetary Science, vol. 34, no. 6, pp. 975-978 (1999).

Physics

15

Scientific paper

A time adjustment from the Earth's centre to the observer's location is quantified and shown to improve the residuals between the observed time of pronounced Leonid showers and the time calculated from perturbed dust trails. A correlation with the exact time of closest approach to the nominal dust trail orbit would allow a further improvement in the residuals. However, there is no evidence for such a correlation, suggesting that the dust trail cross section is substantially elongated within the orbital plane. These results indicate that approaches to dust trails within 0.0005 AU are predictable with an uncertainty of around 5 minutes. Application of this correction to satellites confirms the utility of two strategies to minimise the impact risk. The time adjustment could be applied to any meteor stream.

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