Odd Body in Asteroid Belt with 6 Tails

AI Thread Summary
NASA's Hubble Space Telescope has observed an asteroid in the asteroid belt exhibiting six comet-like tails, leading to the term "active asteroid." This unusual phenomenon may be the result of a recent collision, with some suggesting it appears as if it has been subjected to target practice. Observers are investigating whether the asteroid is spinning, breaking apart, or if there are additional similar bodies. Previous Hubble observations have also noted peculiar shapes, such as an X-shaped object, potentially linked to collisions. The hypothesis suggests that the asteroid's mass shedding could be due to torques from solar radiation.
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cool

the term "Active Asteroid' is a new one for me.
Never heard of or seen as asteroid with a tail before

Dave
 
I suspect it was involved in a 'recent' collision.
 
My friend Harvey says it looks like someone's been using it for target practice!

Other reports have it that it's a confused comet. Certainly, it is an exciting new wonder of nature.

Observers are trying to learn if it is spinning, breaking up, or if there are more of them.

Not long ago, Hubble spotted a peculiar X-shaped object, thought to be the result of a collision, although alternative ideas are not ruled out.
http://www.spacetelescope.org/news/heic1016/
 
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http://hubblesite.org/pubinfo/pdf/2013/52/pdf.pdf
Here is the paper on P/2013 P5 from Astrophysical Journal Letters.
The authors hypothesize the body is showing rotational mass shedding, presumably due to torques imposed from solar radiation.
 
3I/ATLAS, also known as C/2025 N1 (ATLAS) and formerly designated as A11pl3Z, is an iinterstellar comet. It was discovered by the Asteroid Terrestrial-impact Last Alert System (ATLAS) station at Río Hurtado, Chile on 1 July 2025. Note: it was mentioned (as A11pl3Z) by DaveE in a new member's introductory thread. https://www.physicsforums.com/threads/brian-cox-lead-me-here.1081670/post-7274146 https://earthsky.org/space/new-interstellar-object-candidate-heading-toward-the-sun-a11pl3z/ One...
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