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A trans-Neptunian object (TNO) is a minor planet that orbits the Sun beyond Neptune. Learn about the history, classification, distribution and characteristics of TNOs, including Pluto, Eris, Sedna and Farout. 展开
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 than Neptune, which has an orbital semi-major axis of 30.1 展开
According to their distance from the Sun and their orbital parameters, TNOs are classified in two large groups: the Kuiper belt objects (KBOs) and the scattered disc objects (SDOs). The diagram to the right illustrates the distribution of known trans-Neptunian objects (up to … 展开
Among the extreme trans-Neptunian objects are three high-perihelion objects classified as sednoids: 90377 Sedna, 2012 VP113, and 541132 Leleākūhonua. They are distant 展开
Discovery of Pluto
The orbit of each of the planets is slightly affected by the gravitational influences of the other planets. Discrepancies in the early 1900s between the … 展开Given the apparent magnitude (>20) of all but the biggest trans-Neptunian objects, the physical studies are limited to the following: 展开
The only mission to date that primarily targeted a trans-Neptunian object was NASA's New Horizons, which was launched in January 2006 and flew by the Pluto system in July 2015 and 486958 Arrokoth in January 2019.
In 2011, a design study … 展开CC-BY-SA 许可证中的维基百科文本 List of trans-Neptunian objects - Wikipedia
Trans-Neptunian objects: More than meets the ice
网页2023年11月15日 · Planetary astronomers searching the Outer Solar System for new worlds have a fundamental problem: One can discover the most fascinating, most compelling trans-Neptunian object (TNO) and it will still …
Kuiper Belt: Facts - NASA Science
网页The Kuiper Belt is an enormous, donut-shaped volume of space in the outer solar system. While there are many icy bodies in this region that we broadly refer to as Kuiper Belt Objects (KBOs) or trans-Neptunian objects …
The Kuiper Belt - Science@NASA
网页There may be millions of other icy worlds in the Kuiper Belt that were left over from the formation of our solar system. Scientists call these worlds Kuiper Belt objects (KBOs), or trans-Neptunian objects (TNOs). Trans …
Trans-Neptunian Objects: Our Solar System's Periphery …
网页2023年11月24日 · Trans-Neptunian Objects (TNOs) have always remained a mystery for astronomers. These small icy bodies beyond the orbit of Neptune have been intriguing scientists for decades. Their discovery has …
外海王星天体 - 百度百科
网页外海王星天体（Trans-Neptunian object），常简称海外天体，是指太阳系中所在位置或运行轨道超出海王星轨道范围的天体。 海王星外的太阳系由内而外可再区分柯伊伯带（Kuiper belt）及奥尔特云（Oort cloud）区带。
NASA’s Webb To Examine Objects in the Graveyard of the Solar …
网页2020年10月28日 · Learn how Webb will study thousands of icy bodies beyond Neptune's orbit, including Pluto, Eris, and Triton, to reveal their surface chemistry and formation …
Icy asteroids help the James Webb Space Telescope …
网页2024年3月7日 · Mors-Somnus can therefore be used as a proxy to study the dynamic history of Neptune as well as other icy bodies in the Kuiper Belt, also known as trans-Neptunian objects (TNOs).
Trans-Neptunian objects, the Kuiper Belt, and the Oort Cloud ...
网页Trans-Neptunian objects (TNO) are any solar system minor planet that orbits the sun at a greater average distance than Neptune. Pluto is now considered a TNO, as is Eris. As of …
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