Thank you for your patience with the postponement of the Apophis T–9 Years workshop in response to COVID-19. We are happy to announce the workshop has been rescheduled to November 9–10, 2020.

Workshop Location and Dates

The Apophis T–9 Years: Knowledge Opportunities for the Science of Planetary Defense workshop, originally scheduled for April 23–24, 2020, is now scheduled for November 9–10, 2020 at the Hôtel Le Saint Paul, Nice, France.

The Apophis workshop is being held on dates adjacent to a Community Workshop on ESA's Hera Mission, held in Nice November 11–13, 2020. Joint participation is welcome, but you must register for each meeting separately. Details on the Hera Mission workshop may be found at

See the Registration and Logistics page for updates regarding pre-paid registration fees and hotel reservations. The call for abstracts is reopened with the deadline for submission on August 26, 2020.

Purpose and Scope

This workshop will explore the dynamical details and corresponding science opportunities presented by the April 13, 2029 near-miss passage of the asteroid Apophis. Knowledge is the first line of planetary defense, and the 2029 Apophis encounter is a once-per-thousand-year opportunity for investigating an asteroid as large as 350 meters passing within 6 Earth-radii. Time is of the essence as we have less than a decade to plan Earth-based and possible in-situ missions whose measurements can deliver unprecedented detailed knowledge on the physical nature of Apophis as the prototype example (poster child) of potentially hazardous asteroids.

The workshop will consist of invited talks and contributed presentations, including contributed posters.


Note: All electronic submission forms are part of the Meeting Portal, which requires users to set up a personal profile to access our electronic forms (setting up a profile is quick and easy, requiring only a few minutes of your time).