JAXA’s Hayabusa2 spacecraft captured detailed images of the asteroid Torifune (98943) during a close flyby on July 5, 2026. The imagery reveals a peanut-shaped body composed of two connected rubble piles. This mission serves to test high-precision navigation and technologies essential for future planetary defense and asteroid trajectory modification.
What does the new imagery of Torifune reveal?
The spacecraft’s close approach provided the first detailed views of the asteroid’s surface. One specific image shows two distinct masses of rubble joined together, creating a shape resembling a peanut.
Scientific estimates regarding the size of the object vary. Based on observations of its elongated shape, dimensions are estimated at approximately 400 by 800 meters. However, data from The Planetary Society provides a different measurement, suggesting the object has a diameter of roughly 450 meters.
The name “Torifune” was approved by the International Astronomical Union. It refers to the ship of the Japanese deity kami, named Ame-no-torifune, which symbolizes speed, safety, and strength, according to the Czech Astronomical Society.
According to Pavel Suchan, press spokesperson for the institute, scientists performed photometric observations of the asteroid over several years.
These observations allowed the Czech team to create a rotation and shape model, which was then provided to the JAXA mission team. Suchan stated that this model was instrumental in planning the flyby, ensuring the probe could capture the largest possible portion of the surface to collect maximum scientific data.
Why is this mission critical for planetary defense?
The flyby of Torifune is a functional test for technologies required to mitigate the risk of asteroid impacts on Earth. JAXA states that the primary goal of this specific maneuver was to demonstrate high-precision orbital guidance.
By perfecting these navigation techniques, space agencies can develop the ability to perform intentional changes to an asteroid’s trajectory. The extended mission is scheduled to continue until 2031, when Hayabusa2 aims to encounter and explore the asteroid 1998 KY26, an object approximately 30 meters in size.
Pro tip: Monitoring “Apollo-type” asteroids is a priority for space agencies because these objects cross Earth’s orbit, making them primary candidates for planetary defense studies.
What is the history of the Hayabusa2 spacecraft?
Hayabusa2 was launched in December 2014. After reaching the asteroid Ryugu in June 2018, the spacecraft achieved several scientific milestones, including the successful creation of an artificial crater on the asteroid’s surface.
The probe successfully returned to Earth in December 2020, delivering material samples from Ryugu. Following this mission, the spacecraft was redirected into deep space to begin its extended mission, focusing on high-precision maneuvers and the study of other near-Earth objects.
Frequently Asked Questions
What type of asteroid is Torifune?
Torifune is an Apollo-type near-Earth asteroid. While it crosses Earth’s orbit, it spends most of its time outside of our orbit.
When was Torifune first discovered?
The asteroid was discovered on February 3, 2001, by the LINEAR sky survey near Socorro, New Mexico.
What is the ultimate goal of the Hayabusa2 extended mission?
The mission aims to study the asteroid 1998 KY26 in 2031 to advance technologies used in planetary defense and asteroid deflection.
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