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Pluto is no longer a planet (though it is now a dwarf planet) because :

  • It wasn't big enough to be considered a planet (less massive than Eris)
  • Pluto's orbit was inclined too much from the ecliptic and has a large eccentricity
  • Pluto is a member of the Kuiper belt
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11y ago

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Related Questions

Where was Pluto disqualified in space?

Pluto was not disqualified in space. It was reclassed into a more specific category: dwarf planet.


Is Neptune not going to be a planet anymore?

No. The notion of Neptune being disqualified as a planet is not even being discussed. The concerns that apply to Pluto do not apply to Neptune.


Why Pluto has been disqualified?

As a planet, I assume. This should have happened quite a while ago; it turns out that Pluto is much smaller than initially believed. (However, the current official definition of a planet is not directly related to its size or mass.)


Why Pluto is not your planet anymore?

In 2006 the International Astronomical Union redefined planets and thereby disqualified Pluto under one of the criteria. A planet has to evidence hydrostatic equilibrium - basically, be large enough or have enough gravity to form into a spheroidal shape; it has to be in orbit around the Sun (and not for example, another planet), and it has to have cleared a significant fraction of its orbit - which Pluto has not. Hence it was demoted to a minor or dwarf planet (specifically, a Plutino).


What was the the planet that is no longer a planet in your solar system?

Pluto, it is now a dwarf planet or planetoid.


Is Pluto a favorite planet?

Pluto is not a planet its a dwarf planet


Is Pluto a rocky or gas planet?

Pluto is a rocky world. Pluto is now reclassified as a dwarf planet.


What tipe of planet is Pluto?

Pluto is a dwarf planet


What planet change to Pluto?

dwarf planet Pluto


Why did sientists agree that Pluto was not a planet?

Pluto is a planet!


The closest planet to pluto?

neptuneNeptune is the closest to Pluto. Uranus is the second closest planet to Pluto. Saturn is the third closest planet to Pluto. Jupiter is the forth closest planet to Pluto. Mars is the fifth closest planet to Pluto. Earth is the sixth closest planet to Pluto. Venus is the seventh closest planet to Pluto. Mercury is the most furthest away from Pluto. The Sun and the moon are not considered as planets. The planet Pluto is also not considered as a planet.


Is Pluto big?

no Pluto is the smallest planet in the worl and Pluto is also the outer planet