Primary Convener:
Ronald-Louis Ballouz, Johns Hopkins University Applied Physics Laboratory

Convener:
Edgard G. Rivera-Valentin, Applied Physics Laboratory Johns Hopkins
Dawn Graninger, Johns Hopkins University Applied Physics Laboratory

Chair:
Ronald-Louis Ballouz, University of Arizona
Dawn Graninger, Johns Hopkins University Applied Physics Laboratory

On 27 January 2025, near-Earth asteroid (NEA) 2024 YR4 reached a record Torino Scale impact rating of 3 before additional observations ruled out an Earth impact in 2032. A >1% impact probability remains, though, with the Moon. On 13 April 2029, (99942) Apophis will pass within geosynchronous orbit, offering a once-in-7kyr opportunity for investigations into Earth’s gravitational influence on asteroid properties and collaborative observations with ground and space assets, including NASA’s Apophis Explorer, ESA’s RAMSES, and JAXA’s DESTINY+. These encounters highlight growing public interest in asteroid hazards and scientific opportunities that will be amplified by next generation asteroid surveys. This session invites abstracts focused on NEA observations, modeling of dynamical or physical evolution, mission concepts, and planetary defense applications. We especially welcome interdisciplinary contributions that bridge science, engineering, and policy to address the evolving landscape of planetary defense in the context of increasing detection rates and upcoming close encounters.

Index Terms
4339 Disaster mitigation
6035 Orbital and rotational dynamics
6055 Surfaces
6205 Asteroids

Suggested Itineraries:
Disasters‚ Calamities and Extreme Events

Cross-Listed:
SY - Science and Society

Co-Sponsored Sessions:
AAS： American Astronomical Society
JpGU： Japan Geoscience Union
GSA： Geological Society of America

Neighborhoods:
4. Beyond Earth