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The Kuiper belt is distinct from the hypothesized Oort cloud, which is believed to be a thousand times more distant and mostly spherical. The objects within the Kuiper belt, together with the members of the scattered disc and any potential Hills cloud or Oort cloud objects, are collectively referred to as trans-Neptunian objects (TNOs). [21]
An artist's impression of the Oort cloud and the Kuiper belt (inset); the sizes of objects are over-scaled for visibility. The Oort cloud (/ ɔːrt, ʊərt /), [1] sometimes called the Öpik–Oort cloud, [2] is theorized to be a vast cloud of icy planetesimals surrounding the Sun at distances ranging from 2,000 to 200,000 AU (0.03 to 3.2 light ...
Resonant Kuiper belt. Classical Kuiper belt. Scattered disc. Solar System belts are asteroid and comet belts that orbit the Sun in the Solar System in interplanetary space. [1][2] The Solar System belts' size and placement are mostly a result of the Solar System having four giant planets: Jupiter, Saturn, Uranus and Neptune far from the sun.
An artist's rendering of the Oort cloud and the Kuiper belt (inset) In their 2010 work, Bobylev et al. suggested that Gliese 710 has an 86% chance of passing through the Oort cloud , assuming the Oort cloud to be a spheroid around the Sun with semiminor and semimajor axes of 80,000 and 100,000 AU, respectively.
The Kuiper belt is a relatively thick torus (or "doughnut") of space, extending from about 30 to 50 AU [18] comprising two main populations of Kuiper belt objects (KBOs): the classical Kuiper-belt objects (or "cubewanos"), which lie in orbits untouched by Neptune, and the resonant Kuiper-belt objects, those which Neptune has locked into a ...
Artist's view of the theoretical Oort cloud, Hills cloud, and Kuiper belt (inset) In astronomy, the Hills cloud (also called the inner Oort cloud [1] and inner cloud [2]) is a theoretical vast circumstellar disc, interior to the Oort cloud, whose outer border would be located at around 20,000 to 30,000 astronomical units (AU) from the Sun, and whose inner border, less well defined, is ...
Oort cloud objects (ICO/OCOs) v. t. e. A trans-Neptunian object (TNO), also written transneptunian object, [1] is any minor planet in the Solar System that orbits the Sun at a greater average distance than Neptune, which has an orbital semi-major axis of 30.1 astronomical units (AU).
The Kuiper belt lies between 30 and 55 AU from the Sun, while the farther scattered disc extends to over 100 AU, [47] and the distant Oort cloud begins at about 50,000 AU. [68] Originally, however, the Kuiper belt was much denser and closer to the Sun, with an outer edge at approximately 30 AU.
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