Questions tagged [trans-neptunian-object]

Questions about objects orbiting the Sun with an average distance greater than that of Neptune.

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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 ...
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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
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112 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 ...
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131 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
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1answer
73 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 ...
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141 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 ...