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In 2006, the International Astronomical Union (IAU) adopted a new definition of what constitutes a "planet" in our solar system: A celestial body that orbits the sun, has sufficient mass to assume a nearly-spherical shape resulting from its own gravity, clears out debris from the neighborhood around its orbit, and is not a satellite of another planet.
There are 8 objects in our solar system that meet this criteria; the historical planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Pluto is now classified as a dwarf planet, along with the asteroid Ceres and the Kuiper Belt objects Haumea, Makemake, and Eris.
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Note that the above would mean that a planet in a different solar system would be defined as follows: "A celestial body that orbits a star or the remnants of a star, has sufficient mass to assume a nearly-spherical shape resulting from its own gravity, clears out debris from the neighborhood around its orbit, and is not a satellite of another planet."
Wiki User
∙ 7y ago
allokwayo
A planet is a celestrial body that orbit the star
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Which planet is called glossy planet?
There is no planet that is called the "glossy planet".
Which planet starting with m is known as the red planet?
The planet Mars is known as the red planet. It is the fourth planet from the Sun an the second smallest planet in our Solar System.
What is a planet orbiting another planet called?
A moon? I don't think a planet orbiting another planet would be called a planet.
The name of the planet that used to be a planet?
Pluto used to be a planet.
A planet is a?
A planet is a planet.A planet is a celestial body orbiting a star.
Which is the nearest planet to your planet?
It is Venus , the nearest planet to our planet .
Which planet has largest natural planet?
There is no planet which has a natural planet.
Which planet is an outer planet but is more like an inner planet?
The planet that was an outer planet, but was more like an inner planet was Pluto because of its size. The planet Pluto is no longer considered to be a planet.
Which planet is called glossy planet?
There is no planet that is called the "glossy planet".
Is Pulto a planet or a dwarf planet?
A dwarf planet it used to a be a planet
What planet is the same as the planet earth?
no planet
Is uranus a dwarf-planet or is it a planet?
It is a planet.
Is planet Biyo considered the tenth planet?
No. "Planet" Biyo is not a planet but an asteroid.
What planet is nicknamed the sideways planet?
The planet that is nicknamed the 'sideways' planet is Uranus
What planet are scientist saying is not a planet?
Pluto is the planet that scientist are saying is not a planet. Scientists are not saying any particular planet is not a planet. Simply that Pluto has been reclassified as a dwarf planet.
What planet is the weirdest?
The weirdest planet is planet Uranus. The weirdest planet is Jojo on Uranus
Which planet is an outer planet Earth or Uranus?
Uranus is an outer planet.
