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Pluto (minor-planet designation: 134340 Pluto) is a dwarf planet in the Kuiper belt, a ring of bodies beyond the orbit of Neptune. It is the ninth-largest and tenth-most-massive known object to directly orbit the Sun. It is the largest known trans-Neptunian object by volume, by a small margin, but is less massive than Eris.
[196] [201] Many dwarf planet candidates are being considered, pending further data for verification. [202] Pluto (29.7–49.3 AU) is the largest known object in the Kuiper belt. Pluto has a relatively eccentric orbit, inclined 17 degrees to the ecliptic plane. Pluto has a 2:3 resonance with Neptune, meaning that Pluto orbits twice around the ...
Additionally, the definition kept Pluto as a planet. Pluto's planetary status was and is fondly thought of by many, especially in the United States since Pluto was found by American astronomer Clyde Tombaugh, and the general public could have been alienated from professional astronomers; there was considerable uproar when the media last ...
Neptune-crossing minor planets; Non-trojan minor planets. Centaurs; Damocloids; Trans-Neptunian objects (beyond the orbit of Neptune) Kuiper-belt objects (KBOs) Plutinos. Orcus, a dwarf planet. Vanth; Pluto, a dwarf planet. Complete list of Pluto's natural satellites. Charon; Twotinos; Cubewanos (classical objects) Haumea, a dwarf planet ...
The Titius–Bode law predicts planets will be present at specific distances in astronomical units, which can be compared to the observed data for the planets and two dwarf planets in the Solar System: Graphical plot of the eight planets, Pluto, and Ceres versus the first ten predicted distances.
In 2025, there will be three planetary alignments with one including all planets. The last time all eight planets were aligned was on Dec. 28, 2022. On Jan. 18, 2025, there will be six planets in ...
For 76 years, Pluto was considered out solar system's ninth planet. So what caused it to lose its planetary status? Find out on this episode of "Space, Down to Earth"!
There are eight planets within the Solar System; planets outside of the solar system are also known as exoplanets. Artist's concept of the potentially habitable exoplanet Kepler-186f. As of 24 January 2025, there are 5,830 confirmed exoplanets in 4,354 planetary systems, with 976 systems having more than one planet. [1]