No. It is a dwarf planet.
Pluto and the Kuiper Belt objects may share structural similarities with asteroids, but the ones we can observe are much larger than Main Belt asteroids.
Pluto's Orbit
Pluto is usually farther from the Sun than any of the eight planets; however, due to the eccentricity of its orbit, it is closer than Neptune for up to 20 years out of its 249 year orbit. Pluto crossed Neptune's orbit January 21, 1979, made its closest approach to the Sun on September 5, 1989, and remained within the orbit of Neptune until February 11, 1999. This close orbit will not occur again until September 2226.
Pluto was reclassified as a dwarf planet by the International Astronomical Union (IAU) in 2006. This decision was based on a new definition of what constitutes a planet, which Pluto did not meet due to its inability to clear its orbital neighborhood of other debris. The reclassification sparked significant debate within the scientific community and among the public, as Pluto had been considered the ninth planet in our solar system since its discovery in 1930.
Pluto didnt get replaced, its still there. There were other planets like Pluto that were discovered in the last couple of decades or so - the same sort of size and further out from the sun. These include Makemake and Sedna to name a couple.
Pluto has 5 known satellites. The major satellite is Charon. Charon is large enough relative to Pluto that it can be considered the secondary member of a binary dwarf planet system, as the two objects orbit around a common center some distance above Pluto's surface.Two smaller moons discovered in recent years were named Nix and Hydra and another two remain unnamed.
Planetoid
No. Sedna is currently classified as a planetoid.
Pluto is a small planetoid smaller than the Earth.
Pluto, it is now a dwarf planet or planetoid.
That would be Pluto, but Pluto is no longer considered a planet, only a planetoid.
No it is too small to be a planet so it is a planetoid. From scientist bob Jones
Charon. It's more of a satellite than a planet, unless you want to consider Pluto/Charon as a double planet. That's a little awkward, since Pluto has been downgraded to a planetoid.
Neptune, now. Pluto has been downgraded to a planetoid. There were times that Pluto would be closer to the sun than Neptune, too. So it would depend when you asked.
Plato is not a planet but a philosopher.If you mean Pluto: it is no longer considered a planet, but a "dwarf planet"; something like a large planetoid. A planetoid larger than Pluto has already been discovered - look up information about Eris. It seems reasonable to expect that more such "dwarf planets" will be found in the future.
IMPROPER NOUNSQuasar (core of a galaxy)Qiasistar (star containing black hole)Quasi-periodic oscillating x-rays (electromagnetic radiation)Quarks (components of matter)PROPER NOUNSQuintilla (planetoid 755)Queteleta (planetoid 1239)Quadea (planetoid 1297)Quetzalcoatl (planetoid 1915)Qinghai (planetoid 2255)Quanzhou (planetoid 3335)Quqinyue (planetoid 3513)Quanxuesen (planetoid 3763)Quaide (planeoid 3876)Quincy (planetoid 4372)Queens (planetoid 5457)Qualytemocrina (planetoid 5865)Qwerty (planetoid 6600)Quercus (planetoid 8643)Querquedula (planetoid 8755)Quintenmatsijs (planetoid 9569)Quesnay (planetoid 9588)Quantz (planetoid 9911)Quaor (planetoid 50000)
Pluto is not a star. It is a dwarf planet, though planets in our solar system may resemble stars when seen by the naked eye. Pluto is the coldest planetoid in our solar system, though there may be colder planets and dwarf planets in the universe. Pluto is indeed colder than any star.
Pluto, when it was discovered was a planet because it orbited the Sun. However, since then, more and more objects were found that also orbited the Sun. When a larger body than Pluto was found (Eris) it became clear that not all objects could be called a planet. So a definition was decided [See related question - what is a planet] and Pluto did not fulfil this criteria. Pluto is still Pluto - it's just it has changed from being a street to an avenue.
Using strict modern definitions - none. The orbit of Pluto does cross inside the orbit of Neptune during part of it's journey around the sun, but Pluto is no longer officially a planet - it is a "dwarf planet" or "planetoid".
Mercury is the SMALLEST (littlest) PLANET in our solar system, it WAS the SECOND SMALLEST PLANET PRIOR TO Pluto being demoted from a classification of Planet, to a classification of Planetoid.