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A comment on A dwarf planet coming within 11 AU of the sun over the next 10 years. Parent comment

Re:A dwarf planet coming within 11 AU of the sun over the ne... by lumost on Sunday June 20, 2021 @10:13PM (#27575620)
I'm not sure how the mechanics of a 200 km wide comety like object hitting Mars at ~25 km/s would work out, but I'm reasonably certain that it would result in a major resurfacing event. I'd venture that the majority of the gasses would retain escape velocity following impact.
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Re:A dwarf planet coming within 11 AU of the sun over the ne... by tshaddox on Sunday June 20, 2021 @10:15PM (#27575626)
Well, since we’re just assuming we could meaningfully change it’s trajectory we might as well also assume we could slow it down!
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Re:A dwarf planet coming within 11 AU of the sun over the ne... by hodgesrm on Sunday June 20, 2021 @10:41PM (#27575756)
Slowing it down would take way more energy than just nudging in a different direction. You might be better off trying to break it up into smaller pieces.
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Re:A dwarf planet coming within 11 AU of the sun over the ne... by monkeycantype on Sunday June 20, 2021 @11:23PM (#27575996)
Taking notes.... Small pieces... uh ha, yep got it,.. Slow it down... yep. What else?
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Re:A dwarf planet coming within 11 AU of the sun over the ne... by Scarblac on Monday June 21, 2021 @02:17AM (#27576762)
Make sure they hit at a safe distance from our Mars rovers, I like them.
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Re:A dwarf planet coming within 11 AU of the sun over the ne... by monkeycantype on Monday June 21, 2021 @01:14AM (#27576514)
how would we aerobreak it in mars's atmosphere into a decaying orbit, so instead of slamming into mars, it breaks up and rains down on mars? What can we tell about the composition - a solid rock or icy rubble?
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Re:A dwarf planet coming within 11 AU of the sun over the ne... by lumost on Monday June 21, 2021 @09:37AM (#27579016)
The martian atmosphere will have a negligible impact on a 200km wide object. Tidal forces would likely shred the object and the surface of Mars if an aerobraking maneuver was attempted.
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Re:A dwarf planet coming within 11 AU of the sun over the ne... by avaldes on Monday June 21, 2021 @06:19PM (#27585280)
Shouldn't break by itself with Mars' tidal forces alone?
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Re:A dwarf planet coming within 11 AU of the sun over the ne... by minitoar on Monday June 21, 2021 @02:42AM (#27576881)
You get it into an orbit that will have several close encounters with Mars or other planets with atmosphere and you do a bit of aerobraking/thrusting on each pass.
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