Re: [Phys-L] near-earth asteroid groups

[bernard cleyet <bernard@cleyet.org>]

A recent ”New Scientist”  had an article on the YR4 with some history including its down grading to not dangerous.  JD has prompted me to report the article in the Feb. 8-14 article on Phobos.  Its composition is unknown and may be just a captured ”rubble pile” asteroid.  In ’26 the Japanese Exploration Agency are supposed to learn.  

bc  …   didn’t find the icon for the earth, (+ inside O)   but guessed it is at one AU, Q and q.   

> On 2025/Mar/01, at 18:48, John Denker via Phys-l <phys-l@mail.phys-l.org> wrote:
>
> Hi --
>
> The news media and various web sites have been reporting
> that 2024 YR4 is an "Apollo group asteroid" but AFAICT
> they haven't done a very good job of explaining what that
> means or why anybody should care. So I wrote up a little
> page on the subject:
>  https://av8n.com/physics/ne-asteroid-groups.htm
>
> Let me know if you find any bugs.
>
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