China Plans Flyby Mission to Asteroid Apophis During 2029 Earth Encounter

What's Happening?

Chinese scientists have proposed a mission to conduct a flyby of asteroid Apophis during its close approach to Earth in 2029. The mission involves deploying two small satellites into a halo orbit around Sun-Earth Lagrange point 1, which will then transfer into a flyby orbit to meet Apophis shortly after its Earth encounter. The proposal is part of China's broader planetary defense program, which includes the CROWN mission aimed at improving the tracking of near-Earth asteroids. The mission seeks to measure the fundamental properties of Apophis and observe its interactions with Earth's magnetosphere.

Why It's Important?

The proposed mission to Apophis is significant for planetary science, offering a rare opportunity to study a potentially hazardous asteroid during its close approach to Earth. The data collected could enhance our understanding of asteroid dynamics and their potential impact on Earth. The mission aligns with global efforts in planetary defense, complementing other international missions such as RAMSES, DESTINY+, and OSIRIS-APEX. Successful coordination among these missions could provide comprehensive insights into asteroid behavior and improve strategies for mitigating potential threats.

What's Next?

The mission proposal is currently seeking approval and international cooperation, which could enhance its chances of success. If approved, the mission would launch as part of a rideshare to geosynchronous transfer orbit, with the spacecraft gradually raising its orbit to reach L1. The mission team is exploring commercial avenues to support the project and is expected to make a decision by the end of the year. China's ongoing efforts in planetary defense, including a kinetic impactor mission planned for 2027, demonstrate its commitment to addressing asteroid threats.