A trans-Neptunian object (TNO), also written transneptunian object, is any minor planet in the Solar System that orbits the Sun at a greater average distance...

effects could explain the peculiar clustering of orbits for a group of extreme trans-Neptunian objects (ETNOs), bodies beyond Neptune that orbit the Sun...

hypothetical Planet Nine would modify the orbits of extreme trans-Neptunian objects via a combination of effects. On very long timescales exchanges of angular...

extreme trans-Neptunian objects. Because Pluto is no longer considered a planet by the IAU, this new hypothetical object has become known as Planet Nine. In...

widespread deposits of reddish-colored tholins, a chemical makeup similar to those of some other trans-Neptunian objects. Within the range of uncertainties...

System objects Nemesis – Hypothetical star orbiting the Sun, supposedly responsible for extinction events Planet Nine – Hypothetical Solar System planet Theia –...

a dwarf planet. Nominal estimates make it the third-largest known trans-Neptunian object, after Eris and Pluto, and approximately the size of Uranus's...

Nine likeliest dwarf planets and dates of discovery A dwarf planet is a small planetary-mass object that is in direct orbit around the Sun, massive enough...

Asteroid belt List of possible dwarf planets List of trans-Neptunian objects Planet Nine The literature is inconsistent in the usage of the terms scattered...

hypothesized that Planet Nine (a planet beyond Neptune) might exist, based on statistical variance in the orbit of extreme trans-Neptunian objects. Their closest...

the populations of small objects observed in the trans-Neptunian region. The current most widely accepted explanation of the details of this hypothesis...

clustering of the arguments of perihelion of distant trans-Neptunian objects suggested the existence of a large trans-Neptunian planet. On January 20...

based on the low densities of some mid-sized trans-Neptunian objects that the limiting size required for a trans-Neptunian object to reach equilibrium was...

that a distant massive ninth planet is responsible for the alignment of the perihelia of several trans-Neptunian objects with semi-major axes greater...

column on the right includes some notable planets, dwarf planets, asteroids, and trans-Neptunian objects for comparison. The natural satellites of the planets...

of the trans-Neptunian dwarf planet Quaoar. It was discovered by Michael Brown and Terry-Ann Suer using images taken by the Hubble Space Telescope on...

MS4) is a large trans-Neptunian object in the Kuiper belt, which is a region of icy planetesimals beyond Neptune. It was discovered on 18 June 2002 by...

objects—three nearer reservoirs of trans-Neptunian objects. The outer limit of the Oort cloud defines the cosmographic boundary of the Solar System. This area...

David; Tsiganis, Kleomenis (2009). "Contamination of the asteroid belt by primordial trans-Neptunian objects". Nature. 460 (7253): 364–366. Bibcode:2009Natur...

magnitude, and at its closest would rival Canopus. A trans-Neptunian object is any minor planet in the Solar System that orbits the Sun at a greater average...

"Subsurface oceans and deep interiors of medium-sized outer planet satellites and large trans-neptunian objects". Icarus. 185 (1): 258–273. Bibcode:2006Icar...

the members of the scattered disc and any potential Hills cloud or Oort cloud objects, are collectively referred to as trans-Neptunian objects (TNOs). Two...

important factor shaping the orbits of irregular satellites of the planets, trans-Neptunian objects, extrasolar planets, and multiple star systems.: v  It...

first object beyond the orbit of Neptune (other than Pluto); soon large numbers of similar objects were observed, now called trans-Neptunian object. Further...

oʊ/), or Jupiter I, is the innermost and second-smallest of the four Galilean moons of the planet Jupiter. Slightly larger than Earth's moon, Io is the fourth-largest...

ISBN 978-81-8069-761-6. Arnett, Bill (2005). "Titan". Nine planets. University of Arizona, Tucson. Archived from the original on November 21, 2005. Retrieved April 10...

to a planet. It orbits Mars much faster than Mars rotates and completes an orbit in just 7 hours and 39 minutes. As a result, from the surface of Mars...

Nine, was proposed as an explanation for the orbital behavior of six trans-Neptunian objects, but it is speculated to also be an ice giant like Uranus or...

; Sahijpal, S. (2017). "Thermal evolution of trans-Neptunian objects, icy satellites, and minor icy planets in the early solar system". Meteoritics &...

Mariner Mark II, a planned family of NASA spacecraft including a Pluto mission New Horizons 2, a proposed trans-Neptunian object flyby mission Pioneer 10 Pioneer...