Modeling the past and future activity of the Halleyids meteor showers
- 1Department of Physics and Astronomy, The University of Western Ontario, London, Ontario N6A 3K7, Canada (aegal@uwo.ca)
- 2Institute for Earth and Space Exploration (IESX), The University of Western Ontario, London, Ontario N6A 3K7, Canada
- 3IMCCE, Observatoire de Paris, PSL Research University, CNRS, Sorbonne Universités, UPMC Univ. Paris 06, Univ. Lille, France
- 4Leibniz-Institut f. Astrophysik Potsdam, An der Sternwarte 16, 14482 Potsdam, Germany,
- 5International Meteor Organization, Eschenweg 16, 14476 Potsdam, Germany
We present a new numerical model of the Eta-Aquariid and Orionid meteor shower. Through the modelling of millions meteoroids released from comet 1P/Halley, we simulate the characteristics of each Eta-Aquariid and Orionid apparition between 1985 and 2050. The modelled showers activity duration, shape, maximum zenithal hourly rates (ZHR) values, and mass distributions are compared with several decades of meteor observations in the optical and radar range. Our simulations suggest that the age of the Eta-Aquariids shortly exceeds 5000 years, while the Orionids are composed of older material. Several Eta-Aquariid outbursts are expected in the future, in particular around 2023-2024 and 2045-2046. The evolution of 1P/Halley's meteoroid streams is strongly influenced by mean motion resonances with Jupiter, that might be responsible of a ~12 year cycle in the Orionids activity variations.
How to cite: Egal, A., Brown, P., Wiegert, P., Campbell-Brown, M., Rendtel, J., and Vida, D.: Modeling the past and future activity of the Halleyids meteor showers, Europlanet Science Congress 2020, online, 21 September–9 Oct 2020, EPSC2020-443, https://doi.org/10.5194/epsc2020-443, 2020
