this post was submitted on 19 Sep 2024
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News

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[–] Varyk@sh.itjust.works 36 points 6 hours ago (3 children)

I've read like eight of these articles about this Moon just trying to find out if we can see it without a telescope.

I'm assuming we can't see it, but none of the articles I've read mention it. it seems crazy that none of them mention its visibility.

Will we be able to see the second moon?

[–] IamSparticles@lemmy.zip 5 points 1 hour ago

The closest approach is about 600,000 Km away. That's more than twice the distance to the moon. At that distance, to be (just barely) visible to the naked eye, it would have to be about 170km across, which would put it among the largest asteroids in the solar system. In fact, 2024 PT5 is only about 11m across (~36ft). You would need quite a powerful telescope, indeed, to see an object that small at that distance.

[–] GildorInglorion@lemmy.world 22 points 6 hours ago (1 children)

The posted article says no, not even with an amateur telescope

[–] Varyk@sh.itjust.works 8 points 6 hours ago

of course i skim this one and it's in the final paragraph.

thank you!

[–] vegeta@lemmy.world 22 points 7 hours ago (2 children)
[–] nokturne213@sopuli.xyz 6 points 6 hours ago

For two months it is.

[–] Rhaedas@fedia.io 3 points 7 hours ago

I've got a bad feeling about this.

[–] lettruthout@lemmy.world 9 points 6 hours ago (1 children)

Was wondering about its size: 11 meters (36 ft) in diameter per wikipedia

[–] nokturne213@sopuli.xyz 10 points 6 hours ago (1 children)

That is just over 98 Big Macs.

[–] tal@lemmy.today 7 points 5 hours ago

If we send rocket(s) up and can fiddle with its velocity enough, we could keep it.

I feel like if you capture a new moon, you should also get to name it.

If McDonalds will sponsor it, we could have Luna and 98 Big Macs.

[–] PaupersSerenade@sh.itjust.works 2 points 4 hours ago

Immediately thought of QI

[–] superkret@feddit.org 2 points 5 hours ago (1 children)

An asteroid called 2020 CD3 was bound to Earth for several years before leaving the planet's orbit in 2020

How can something that's in an orbit for years then just leave again?
Is the orbit so big it crosses other planets' sphere of influence?
Or is its apoapsis far enough away for the sun to snatch it away?

[–] skuzz@discuss.tchncs.de 4 points 4 hours ago (1 children)

Gravitational interactions between Earth, Moon, Sun leading to the orbit never really being stable, probably. The asteroid decided Earth orbit wasn't its' forever home.

[–] Bbbbbbbbbbb@lemmy.world 3 points 2 hours ago

Its also very hard to get an object into the perfect orbit that it wont float away. Our moon is slowly drifting farther and farther from us

[–] drspod@lemmy.ml 4 points 7 hours ago (3 children)

spinning around Earth in a horseshoe shape for about two months

what? what kind of orbit is that?

[–] forrcaho@lemmy.world 5 points 6 hours ago

It's a parabola or hyperbola. Of course, it's not technically an "orbit" since it isn't closed; the Wikipedia pages are called Parabolic trajectory and Hyperbolic trajectory.

[–] suburban_hillbilly@lemmy.ml 5 points 6 hours ago* (last edited 6 hours ago)

The kind that takes more than 2 months to 'complete'. From the perspective of the earth it makes a horseshoe shape. From the 'temporary moon' perspective it gets a trajectory adjustment on its solar orbit.

It's more like a gravity assist that takes 2 months to complete than an orbit.

So if I’m doing the math right… that’s 3 total moons:

Moon

Mini moon 1

The second mini moon

Science is fun.

[–] DmMacniel@feddit.org 2 points 7 hours ago (1 children)
[–] thefartographer@lemm.ee 1 points 6 hours ago

It's just gonna fall off the Empire State Building trying to save Nicole Kidman

[–] Virkkunen@fedia.io 1 points 7 hours ago

A second mini moon? Do we even have a first mini moon?