Planetary and exoplanetary Astronomy Lunch Seminar (PALS) for 2021-09-20

Series: Planetary and exoplanetary Astronomy Lunch Seminar (PALS)
Date: Monday 20-Sep-2021
Time: 11:15-12:15
Location: Online via Zoom (link sent out to the PALS distribution list prior to the talk)
Speaker: Robert Melikyan (University of Arizona)
Title: Estimating the Flux of Bennuid Meteors at Earth

NASA's OSIRIS-REx mission has observed activity at asteroid (101955) Bennu. Hyperbolic ejecta are estimated to be produced at regular intervals about Bennu's orbit. We investigate Bennu's resulting meteoroid stream through the simulation of nearly 2 million Bennuids. Particle production matches the rates, sizes, flux, and ejection mechanisms as constrained by the OSIRIS-REx science team. We characterize the evolution of this meteorid stream along with predicted flux rates through the Earth-Moon system.

For further information contact PALS coordinators Drs. Quanzhi Ye ( and Matej Malik (


Special accommodations for individuals with disabilities can be made by calling (301) 405-3001. It would be appreciated if we are notified at least one week in advance.


Directions and information about parking can be found here.

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