Questions tagged [trans-neptunian-object]
Questions about objects orbiting the Sun with an average distance greater than that of Neptune.
23
questions
8
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1answer
992 views
Could Planet X have a perihelion much closer than 300 AU and still be responsible for the gravitational interaction with 19 TNOs?
In August, Michael Brown and Konstantin Batigyn proposed new data concerning the hypothetical Planet X to explain the orbits of the 19 TNOs. They suggest a perihelion of 300 AU, but might Planet X be ...
6
votes
1answer
593 views
Are satellites of trans-Neptunian objects classified as trans-Neptunian objects?
I can't seem to get a consistent answer regarding the question of whether or not satellites (moons) of trans-Neptunian objects are considered to be trans-Neptunian objects, given that they do not ...
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0answers
57 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 ...
2
votes
1answer
40 views
Has the rotation of Eris and Dysnomia been observed?
Since both Eris and Dysnomia have been captured on a single image, is it possible to shoot multiple images of them to see how they rotate around each other? Has this been attempted? We don't know much ...
1
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0answers
99 views
When will 2002 MS4 be named?
The trans-Neptunian planetoid 2002 MS4 is currently the largest known unnamed Sun-orbiting object. Is there any standard schedule on when this and similar objects might be named? Usually the ...
0
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0answers
27 views
Do the orbits of 14 TNOs even need an explanation (a planet mass) or is it just for historical reasons (how they formed)?
From Uranus' orbit we concluded there must be another planet beyond Uranus, eventually discovered and named Neptune. The same happened when Pluto was about to be discovered (though on false premises).
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2
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0answers
50 views
Based on discoveries of new TNOs since 2016, is planet Nine still necessary to explain the TNO's orbits?
It is almost five years since the announcement of the likelyhood of another planet that is responsible for clustering eTNO's orbits, very close perihelia of detached dwarf planets to the Sun, and high ...
3
votes
0answers
66 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 ...
2
votes
1answer
59 views
Computationally intensive technique to search for TNO's within the noise of historical photographic data?
I remember reading recently about a technique to search through lots of old survey images to try to identify trans-Neptunian objects that were so dim that they were "lost in the noise" in ...
1
vote
1answer
69 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/...
0
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0answers
47 views
How likely does a body more massive than Eris exist beyond the Kuiper belt?
Other than the hypothetical Planet IX, is it likely if there's a (dwarf) planet more massive than Eris orbiting between Eris and Planet IX? Michael Brown seems to have found it likely. As far as we ...
1
vote
1answer
142 views
Is there or will there be any search after a primordial black hole 500 au from the Sun?
Since 2019 it is proposed that the hypothetical Planet IX may in fact be a primordial black hole. Black holes are being looked after differently than planets. You can look for a gravitational lens or ...
-7
votes
2answers
402 views
Why isn't Eris considered a planet despite being the body of dominant mass?
The 2006 definition of a planet states that a planet is a celestial body that
(a) is in orbit around the Sun
(b) has sufficient mass for its self-gravity to overcome rigid body forces so that it ...
2
votes
1answer
149 views
Can the WISE telescope detect black holes?
Black holes are hot, aren't they? With its infrared scan, could the WISE telescope also detect a black hole? The hypothetical planet beyond the Kuiper belt could actually be a primordial black hole. ...
5
votes
1answer
165 views
Could Eris have a permanent atmosphere?
In Wikipedia they write that Eris has an atmosphere when around perihelion (close to the Sun) which collapses when Eris moves away from the Sun. So it behaves similar to a comet's tail. However, they ...
4
votes
1answer
78 views
How can a Grade-11 Student avail TESS data and learn to process?
As mentioned, I am a Grade-11 student. I have always been interested in Data Processing activities. This sums up my experience of working on Asteroid hunt Campaign under IASC (International Asteroid ...
5
votes
1answer
1k views
What does the Sun look like from Eris at its aphelion?
At its aphelion (most distant location from the Sun) the outermost-known planet Eris is about 100 times as far from the Sun as Earth. What does the Sun look like from Eris' surface? Is there still a ...
2
votes
1answer
91 views
How official is TNO 486958, 2014 MU69's new name Arrokoth?
The Trans-Neptunian object 486958 or 2014 MU69 has had several designations and nicknames. According to Phys.org's NASA renames faraway ice world 'Arrokoth' after backlash
Ultima Thule, the ...
5
votes
0answers
66 views
Are occultation observations used/useful for orbit determination?
The IAU Minor Planet Center lists $(486958)\space 2014 \space MU_{69}$ "Ultima Thule" as having an uncertainty parameter of 2, based on the observation arc of 851 days, from its discovery in 2014, to ...
3
votes
1answer
187 views
Trans-Neptunian Dwarf Planet near Heliopause
Is there any reason to think a Trans-Neptunian dwarf planet, the size of Pluto, could not exist in a Keplerian orbit 120AU from the Sun?
If such an object existed, and came within 0.1AU of the ...
2
votes
1answer
153 views
How long would an occultation by a TNO last?
A trans-Neptunian object, 1 million km from the observer, with an angular diameter of 0.126° occults the Sun (angular diameter of 0.004°) and the TNO and the observer are moving in the same direction, ...
2
votes
1answer
124 views
How would the combined masses of the Centaurs or the scattered disk compare to the combined mass of the asteroid belt?
I'm interested in finding the combined mass of the Centaurs and the scattered disk. I looked around but I wasn't able to find any estimates. This seems to suggest that either the combined masses of ...
1
vote
2answers
367 views
How do they know how far out Farout is? (2018 VG18)
The Carnegie Science article Discovered: The Most-Distant Solar System Object Ever Observed begins:
Washington, DC— A team of astronomers has discovered the most-distant body ever observed in our ...