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Questions tagged [kuiper-belt]

Questions about the circumstellar disk orbiting in the outer Solar System, beyond the orbit of Neptune.

5 votes
1 answer
186 views

Would it be practical to map out the Kuiper Belt and Oort Cloud via Radar?

I recall reading an article where the moon, could be detected via radar and that orbiting radar satellites could map out the surface of mars, and in some cases even parts of Venus (the lattermost ...
Sidharth Ghoshal's user avatar
7 votes
1 answer
3k views

How and when will Sirius migrating towards the Sun trigger the movement of Kuiper belt objects into the solar system?

Currently the Sirius binary star system is moving towards the Sun at 5.5km/s for roughly the next 60 thousand years or so. At the end of those years it will be 7.8 light years away from the Sun and ...
Levi Pinks's user avatar
5 votes
0 answers
100 views

How do the giant planets excite the orbits of asteroids?

The giant planets, particularly Jupiter, are notorious for bringing about changes in eccentricities and inclinations of smaller bodies(asteroids and KBOs). Jupiter, in fact, throws almost all the ...
Ambica Govind's user avatar
3 votes
0 answers
95 views

How do JWST and Hubble compare in detecting small bodies in the solar system that are a) white, b) black, c) Arrokoth-like, d) Voyager-like?

Assume the object is small, spherical, and illuminated only by the Sun, and has some apparent motion. The object is either: a) white - reflecting 100% perfectly diffusely (assume low temperature) b) ...
Roger Wood's user avatar
  • 1,379
0 votes
1 answer
97 views

The Kuiper Belt and Oort cloud [closed]

How come the comets and asteroids in the Kuiper belt and Oort cloud are kept in a gravitational field and they don't get pushed and pulled by the planets around them? I get why comets in the Oort ...
Anonymous RU's user avatar
4 votes
1 answer
363 views

Where will the frost line be when the Sun becomes a red giant and what effect will it have on the solar system?

I understand the frost line is currently about 5.2 AU and earlier in the solar systems formation was 2.7 AU. But when the Sun becomes a red giant the frost line should move outward. I understand the ...
Brooks Nelson's user avatar
0 votes
0 answers
83 views

If the hypothetical planet had a perihelion around 60 AU, would some consider it being responsible for the Kuiper cliff?

If Planet X had a perihelion around 60 AU and an aphelion in the vicinity of Sedna's aphelion (940 AU), would it be considered to be responsible for both the high eccentricities of TNO's orbits and ...
John's user avatar
  • 1,538
1 vote
0 answers
84 views

Which KBOs would one have to merge in order to have more than half the Kuiper belt's mass?

I wonder how many and which Kuiper belt objects' masses would one have to merge so that the resulting mass is more than half the Kuiper belt's mass. The total mass of the Kuiper belt is reportedly ...
John's user avatar
  • 1,538
1 vote
1 answer
98 views

Is the mass of Kuiper belt dominated by large objects?

There is a problem in my example sheet trying to teach me distributions. My result is that Kuiper belt objects are dominated by large mass objects. Is this supported by observational evidence?
zabop's user avatar
  • 481
1 vote
1 answer
193 views

Are there actual asteroids in the Oort cloud?

This answer to At what annual rate are new exoplanets being recognized? How does it compare to new asteroids? shows that the rate of new asteroid discovery is roughly two orders of magnitude higher ...
uhoh's user avatar
  • 30.7k
3 votes
1 answer
115 views

How many Kuiper Belt objects have moons? How do we know this?

On 2012 in the New Horizons' The PI's Perspective Alan Stern wrote The Kuiper Belt at 20: Paradigm Changes in Our Knowledge of the Solar System (more also archived) which includes: Most of the known ...
uhoh's user avatar
  • 30.7k
5 votes
1 answer
156 views

Why is the Kuiper belt called like this?

Since most orbits of KBOs are highly inclined, isn't it rather a "Kuiper cloud"? Most main belt objects are also more inclined than the eight recognized planets, but not as much as KBOs (and ...
Greenhorn's user avatar
  • 397
15 votes
2 answers
2k views

What caused this mysterious stellar occultation on July 10, 2017 from something ~100 km away from 486958 Arrokoth?

In 2017 a series of stellar occultations by asteroid 2014 MU69 "Ultima Thule" now officially named 486958 Arrokoth were timed in order to obtain better orbital information before the New ...
uhoh's user avatar
  • 30.7k
1 vote
1 answer
100 views

Are there any known low-inclination trans-Neptunian objects?

All the trans-Neptunian object's orbits I know are very inclined compared to those of the eight recognized planets, and Centaur's orbits are highly inclined as well. Are there any known Centaurs and/...
John's user avatar
  • 113
8 votes
1 answer
438 views

Could rocks from Earth have reached the Kuiper belt, or Neptune at least? If so, how?

This answer (currently edit 3) to How certain are we that we have not sent life to other planets/moons? begins: First of all, rocks from Earth are probably just about everywhere in the Solar System. ...
uhoh's user avatar
  • 30.7k

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