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A dwarf planet coming within 11 AU of the sun over the next 10 years

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Re: A dwarf planet coming within 11 AU of the sun over the next 10 years

#21
post #15

Apologies if this is an obvious question but I'm not familiar with astronomy. Will this dwarf planet just pass through our solar system or is there a chance it will start to orbit our sun?

> its orbit takes it from just beyond the orbit of Saturn (10.9 AU) all the way out to the Oort Cloud It looks like it currently orbits the sun.

Ah, for some reason I read the original message as some new dwarf planet was outside our solar system and had a trajectory towards it. Thanks for the clarification.

Re: A dwarf planet coming within 11 AU of the sun over the next 10 years

#24
post #15

Apologies if this is an obvious question but I'm not familiar with astronomy. Will this dwarf planet just pass through our solar system or is there a chance it will start to orbit our sun?

It is from our solar system. It has just a very eccentric orbit, but it was always orbiting the Sun.

But for interstellar objects, the answer is always "no". Unless it passes very close to some object that there's an orbital slingshot (or a collision, the odds of both are basically zero), interstellar objects always move away.

Re: A dwarf planet coming within 11 AU of the sun over the next 10 years

#25
post #18

Earlier quoted context omitted.

@messe guess you're right - I'll take the downvotes...

You voiced your comment as more speculative rather than as a question. Please don’t stop asking questions!

Ty!

Re: A dwarf planet coming within 11 AU of the sun over the next 10 years

#26
post #15

Apologies if this is an obvious question but I'm not familiar with astronomy. Will this dwarf planet just pass through our solar system or is there a chance it will start to orbit our sun?

According to TA it is orbiting the sun. The closest point out will be at beyond Saturn's orbit, the farthest will be 30-50k AU. Of course, there are some error bars on these numbers that I can't interpret, and given that it orbits that far out, its orbit might actually be influenced by neighboring stars as well.

Re: A dwarf planet coming within 11 AU of the sun over the next 10 years

#27
post #23

Is this something we could plan and manage to launch an orbiter/lander to in time? Has anyone thought about the possibility of slapping something like a telescope on that and letting it beam back data and images from veryyyyy far out eventually?

If you launch your telescope on a spacecraft and get it to match speed with the dwarf planet (which is necessary for a soft landing), there's not much point in actually attaching it to the dwarf planet. That just blocks the view of half the sky.

Also, there will be nothing to see out there other than the dwarf planet itself.

Re: A dwarf planet coming within 11 AU of the sun over the next 10 years

#28
post #23

Is this something we could plan and manage to launch an orbiter/lander to in time? Has anyone thought about the possibility of slapping something like a telescope on that and letting it beam back data and images from veryyyyy far out eventually?

Like till it gets closer we dont even know if it would be suitable to put something like that on it.

Although it does seem like interesting idea.

However, we have sent probes much further than this object (aka the voyager missions).

So it would mainly be useful for studying this object. So a telescope would be less than ideal since we could always in theory deploy a telescope much deeper into space if we wanted.

Re: A dwarf planet coming within 11 AU of the sun over the next 10 years

#29
post #14

Earlier quoted context omitted.

New Horizons took a nearly straight shot to Pluto (just stopping by Jupiter on the way for a gravity assist). That trip took 9 years to travel 40 AU (not at constant speed, of courses, since it's constantly being drawn toward the Sun). This dwarf planet makes its closest approach at 10 AU, so you could do a fly by in less than 3 years if you wanted to pay for it. However, the science return from a flyby would be limi…

Getting into orbit would be rather difficult, as the probe would have have to match the planets velocity at perihelion. My instinct says it’s probably just on the edge of doable (although I’m not sure on which side), but I haven’t crunched the numbers. It would almost certainly need to be launched on a Delta-IV or Falcon Heavy class vehicle. EDIT: s/perigee/perihelion. I could say periapse and be neutral, but perihel…

The speed of Rosetta's comet at perigee is, I think, significantly grater than the max speed of this dwarf planet. The dwarf planet has a much higher apogee, of course, but escape velocity, corresponding to infinite apogee, is finite and not that large, and Rosetta had to go much deeper into the Sun's gravity well. So, as a non-expert who hasn't done the numbers, I'd guess matching pace with the dwarf planet would be easier (requiring less delta V and/or gravity assists) than Rosetta with the comet.

Re: A dwarf planet coming within 11 AU of the sun over the next 10 years

#30
post #23

Is this something we could plan and manage to launch an orbiter/lander to in time? Has anyone thought about the possibility of slapping something like a telescope on that and letting it beam back data and images from veryyyyy far out eventually?

Just launch a deep-space telescope; it would be easier.

Soft-landing the telescope on an airless body would be harder (in delta-V terms) than just launching it into an equivalent solar orbit. And the body would block about half your view of the sky at any one time.

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