Hayabusa2 Performs Torifune Asteroid Flyby

Japan Aerospace Exploration Agency’s Hayabusa2 spacecraft performed a high-speed flyby of asteroid Torifune, also called 2001 CC21, on 5 July 2026. The spacecraft passed at about 800 metres from the asteroid’s centre and moved at around 5 kilometres per second relative to the asteroid.

Hayabusa2 Mission Profile

Hayabusa2 is a Japanese sample-return spacecraft developed by the Japan Aerospace Exploration Agency. The probe completed its primary mission in 2020 by returning samples from asteroid Ryugu to Earth. It is now operating on an extended mission with additional asteroid encounters.

Asteroid Torifune and Flyby Data

Asteroid Torifune has the designation 2001 CC21. Its estimated diameter is about 450 to 500 metres. The flyby enabled observations of the asteroid’s surface, structure, and temperature. JAXA confirmed that the spacecraft remained in normal condition at 6:35 p.m. Japan Standard Time on 5 July 2026.

Planetary Defence and Navigation Technology

The flyby formed part of planetary defence research. Planetary defence includes the detection, tracking, and possible deflection of near-Earth objects that may pose a hazard to Earth. The mission phase was designed to test rapid reconnaissance methods and high-precision guidance technology for future asteroid-response missions.

Extended Mission Targets

Hayabusa2’s extended mission includes a planned rendezvous with asteroid 1998 KY26 in 2031. The spacecraft’s asteroid flyby at high speed is part of mission operations for deep-space navigation and target characterisation.

Important Facts for Exams

• Hayabusa2 is a Japanese asteroid sample-return mission operated by the Japan Aerospace Exploration Agency.
• Ryugu is a near-Earth asteroid from which Hayabusa2 returned samples in 2020.
• 2001 CC21 is another designation for asteroid Torifune.
• Planetary defence is linked to near-Earth object monitoring and mitigation techniques.

Mission Timeline

Hayabusa2 completed its sample-return phase in 2020 and later entered an extended mission. The spacecraft’s next major target is asteroid 1998 KY26 in 2031.