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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.
One of the oldest stars with a multiplanetary system, although it is still more metal-rich than the Sun. None of the known planets is in the habitable zone. [30] 61 Virginis: Virgo: 13 h 18 m 24.31 s: −18° 18′ 40.3″ 4.74: 28: G5V: 0.954: 5531: 8.96: 2 (1) Planet d remains unconfirmed, [31] and a 2021 study found that it was likely a ...
[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 ...
For decades, astronomers have tried to determine how Pluto acquired its unusually large moon Charon, which is about half the size of the dwarf planet. Now, new research suggests that Pluto and ...
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 ...
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]
A good-natured protest against suggestions that Pluto is not a planet. [citation needed] "Pluto" (1998), song by 2 Skinnee J's. An impassioned defense of Pluto's status as a planet. [citation needed] Thing a Week, August 25, 2006 podcast by Jonathan Coulton. Featured a song "I'm Your Moon", from Charon's point of view, about Pluto being ...