Eris, the largest known scattered-disc object (center), and its moon Dysnomia (left of object)
Types of distant minor planets
Centaurs
Neptune trojans
Trans-Neptunian objects (TNOs)
Kuiper belt objects (KBOs)
Classical KBOs (cubewanos)
Resonant KBOs
Plutinos (2:3 resonance)
Twotinos (1:2 resonance)
Scattered disc objects (SDOs)
Resonant SDOs
Extreme trans-Neptunian object
Detached objects
Sednoids
Oort cloud objects (ICO/OCOs)
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The scattered disc (or scattered disk) is a distant circumstellar disc in the Solar System that is sparsely populated by icy small Solar System bodies, which are a subset of the broader family of trans-Neptunian objects. The scattered-disc objects (SDOs) have orbital eccentricities ranging as high as 0.8, inclinations as high as 40°, and perihelia greater than 30 astronomical units (4.5×109 km; 2.8×109 mi). These extreme orbits are thought to be the result of gravitational "scattering" by the gas giants, and the objects continue to be subject to perturbation by the planet Neptune.
Although the closest scattered-disc objects approach the Sun at about 30–35 AU, their orbits can extend well beyond 100 AU. This makes scattered objects among the coldest and most distant objects in the Solar System.[1] The innermost portion of the scattered disc overlaps with a torus-shaped region of orbiting objects traditionally called the Kuiper belt,[2] but its outer limits reach much farther away from the Sun and farther above and below the ecliptic than the Kuiper belt proper.[a]
Because of its unstable nature, astronomers now consider the scattered disc to be the place of origin for most periodic comets in the Solar System, with the centaurs, a population of icy bodies between Jupiter and Neptune, being the intermediate stage in an object's migration from the disc to the inner Solar System.[4] Eventually, perturbations from the giant planets send such objects towards the Sun, transforming them into periodic comets. Many objects of the proposed Oort cloud are also thought to have originated in the scattered disc. Detached objects are not sharply distinct from scattered disc objects, and some such as Sedna have sometimes been considered to be included in this group.
^Maggie Masetti. (2007). Cosmic Distance Scales – The Solar System. Website of NASA's High Energy Astrophysics Science Archive Research Center. Retrieved 2008 07-12.
^Cite error: The named reference Morbidelli2008 was invoked but never defined (see the help page).
^McFadden, Weissman, & Johnson (2007). Encyclopedia of the Solar System, footnote p. 584
^Horner, J.; Evans, N. W.; Bailey, Mark E. (2004). "Simulations of the Population of Centaurs I: The Bulk Statistics". Monthly Notices of the Royal Astronomical Society. 354 (3): 798. arXiv:astro-ph/0407400. Bibcode:2004MNRAS.354..798H. doi:10.1111/j.1365-2966.2004.08240.x. S2CID 16002759.
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The scattereddisc (or scattered disk) is a distant circumstellar disc in the Solar System that is sparsely populated by icy small Solar System bodies...
origin is the scattereddisc, a dynamically active zone created by the outward motion of Neptune 4.5 billion years ago; scattereddisc objects such as...
astronomers consider the scattereddisc to be merely another region of the Kuiper belt and describe scattered-disc objects as "scattered Kuiper belt objects"...
a thousand times as distant from the Sun than the Kuiper belt, the scattereddisc and the detached objects—three nearer reservoirs of trans-Neptunian...
around the Sun. The IAU initially considered Sedna to be a member of the scattereddisc, a group of objects sent into high-eccentricity orbits by the gravitational...
and the scattered disk objects like Eris. Detached objects have also been referred to in the scientific literature as extended scattereddisc objects...
Rather, it is considered a member of a linked population called the scattereddisc. Like other members of the Kuiper belt, Pluto is thought to be a residual...
interplanetary dust. Edgeworth-Kuiper belt, beyond the orbit of Neptune Scattereddisc, beyond the orbit of Neptune Hills cloud; only the inner Oort cloud...
the near-Earth objects, the centaurs, the Kuiper belt objects, the scattereddisc objects, the sednoids, and the Oort cloud objects. About 60% of the...
formation Protoplanetary disk Ring system Rubble pile Sample-return mission Scattereddisc Star formation Systems Exocomet Interstellar Exomoon Tidally detached...
Short-period comets originate in the Kuiper belt or its associated scattereddisc, which lie beyond the orbit of Neptune. Long-period comets are thought...
bodies beyond the orbit of Neptune. Gonggong and Eris orbit in the scattereddisc, which is somewhat further out and, unlike the Kuiper belt, is unstable...
known to have been scattered onto similarly distant and elongated orbits by Neptune—these are collectively known as scattereddisc objects. The object...
trans-Neptunian objects), most of which reside in the Kuiper belt and the scattereddisc. As of May 2022[update], there are 1,131,201 known objects, divided...
2016. More work is needed to determine whether Sedna and the other scattereddisc objects were sent on their circuitous trips round the Sun by a star...
its orbit has likely been perturbed and scattered by Neptune; thus, it falls into the category of scattered-disc objects. 2018 VG18 last passed perihelion...
2013 RA109, is an extreme trans-Neptunian object discovered on September 12, 2013. This object orbits the Sun between 46.0 and 869 AU (6.9 and 130 billion km)...
Kuiper belt and scattereddisc. This scenario explains the Kuiper belt's and scattereddisc's present low mass. Some of the scattered objects, including...
imply that Haumea and its "offspring" might have originated in the scattereddisc. In today's sparsely populated Kuiper belt, the chance of such a collision...
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