Is Pluto a real planet?

Answer 1

The International Astronomical Union decided that Pluto was no longer a planet. The reason is that while Pluto is round, orbits the sun, and has three moons, it has not cleared (via gravity) its own orbit of debris. Instead, they decided to classify it as a "dwarf planet".

See the details below.

RESOLUTION 5A
The IAU therefore resolves that "planets" and other bodies in our Solar System, except satellites, be defined into three distinct categories in the following way:

(1) A "planet" [footnote 1] is a celestial body that (a) is in orbit around the Sun, (b) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape, and (c) has cleared the neighbourhood around its orbit.

(2) A "dwarf planet" is a celestial body that (a) is in orbit around the Sun, (b) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape [footnote 2] , (c) has not cleared the neighbourhood around its orbit, and (d) is not a satellite.

(3) All other objects [footnote 3] except satellites orbiting the Sun shall be referred to collectively as "Small Solar-System Bodies".


Footnote 1: The eight "planets" are: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.

Footnote 2: An IAU process will be established to assign borderline objects into either dwarf planet and other categories.

Footnote 3: These currently include most of the Solar System asteroids, most Trans-Neptunian Objects (TNOs), comets, and other small bodies.

RESOLUTION 6A
The IAU further resolves:

Pluto is a "dwarf planet" by the above definition and is recognized as the prototype of a new category of trans-Neptunian objects.

Answer 2

Pluto (IPA: /ˈpluːtəʊ/), designated (134340) Pluto in the Minor Planet Center catalogue, is the second-largest known dwarf planet in the solar system. It orbits between 29 and 49 AU from the Sun, and was the first Kuiper Belt Object to be discovered. Approximately one-fifth the mass of the Earth's Moon, Pluto is primarily composed of rock and ice. It has an eccentric orbit that is highly inclined with respect to the planets and takes it closer to the Sun than Neptune during a portion of its orbit. Pluto and its largest satellite, Charon, could be considered a binary system because they are closer in size than any of the other known celestial pair combinations in the solar system, and because the barycentre of their orbits does not lie within either body. However, the International Astronomical Union (IAU) has yet to formalize a definition for binary dwarf planets, so Charon is regarded as a moon of Pluto. Two smaller moons, Nix and Hydra, were discovered in 2005. Pluto is smaller than several of the natural satellites or moons in our solar system (see the list of solar system objects by radius).

From its discovery by Clyde Tombaugh in 1930, Pluto was considered the ninth planet from the Sun. In the late 20th and early 21st century, many similar objects were discovered in the outer solar system, most notably the Trans-Neptunian object Eris which is slightly larger than Pluto. On August 24, 2006 the IAU defined the term "planet" for the first time. This definition excluded Pluto and Eris, which were then reclassified under the new category of dwarf planet along with Ceres and Eris.[1] Pluto is also classified as the prototype of a family of trans-Neptunian objects.[2][3] After the reclassification, Pluto was added to the list of minor planets and given the number 134340.

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Answer 3

No. Not anymore. What happened is a bunch of scientists found other planetoid objects beyond Pluto and the general public didn't want 11 planets, so the scientists did a little reorganizing and dismissed Pluto as a planet. They say that it is now just an object of the Keplar Belt. I think they should classify it as a sub-planet. Hope this helps.

Answer 4

Pluto used to be considered a planet, but in February, 2006 it was officially demoted. It is now considered a Kuiper Belt Object.

Answer 5

whilst i became into starting to be up decrease back interior the Nineteen Fifties and Nineteen Sixties Pluto became into the furthur maximum planet. besides the shown fact that it has develop into sparkling that Pluto isn't something extra effective than the biggest of the comets of the Kuiper Belt. surely, there is an entire classification of TNOs with comparable orbitas that are referred to as "Plutinos" - little Plutos - which, it form of feels, are such as their huge brother in all yet their length. many circumstances interior the previous the status of Pluto has been puzzled and now that's being puzzled extra insistently than ever. The proposal that's being debated is to downgrade Pluto from being the 9th planet, to being asteroid extensive type 10000. something of the TNOs might then be numbered from 10001.

Answer 6

No. Pluto is a dwarf planet.

Answer 7

not anymore it was considered not a real planet because it is so small.now i forgot what its called but its not a planet.so does that answer your question.

Answer 8

no. a while ago scientist sayed it was a asteriod sorry if u wanted it to be a planet

Answer 9

yes

Answer 10

Depends on who you ask..
I say yes...