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Mercury, with a mass of 0.055 times that of the Earth.
Mercury is the smallest of the eight planets, and has the lowest mass.

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Which of the eight planet is the smallest?

Jupiter. Jupiter has a mass of 1.8986×1027 kg, 317.83 times the mass of earth. Jupiter is massive enough to be used as a reference mass for describing the mass of the other outer planets of our solar system.


What is the smallest outer planet?

Well, Neptune is a little smaller than Uranus, so that makes Neptune the smallest outer planet!


What is the biggest and smallest planet in the solar system?

The biggest planet in the solar system is Jupiter, while the smallest planet is Mercury. Jupiter is the largest planet by both mass and volume, while Mercury is the smallest and closest planet to the Sun.


What planets have the largest and smallest mass?

Jupiter has the most mass, while Mercury has the least mass.Note: Pluto is not considered because it is no longer considered to be a planet.


Which planet is the smallest?

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Is Mars the smallest planet in the solar system?

Neither - Mercury is the smallest planet in our Solar System at 0.055 Earth masses and Jupiter is the largest planet in our Solar System at 318 Earth masses (e.g. which is 2.5 times the mass of all the other planets put together).


What is the diameter and mass on mercury?

Mercury has a mass of 0.33x1024kg, and a diameter of 4879km.


What is the smallest gas giant?

The smallest gas giant planet in our solar system is Neptune.


Is Saturn the largest planet or the smallest planet?

it is the smallest planet


Is Pluto the biggest or smallest planet in terms of mass?

As of 2006 Pluto is no longer considered a planet. Prior to that it was counted as the least massive planet in the solar system.


Is mars the smallest planet in out solar system?

No. Mercury is the smallest planet in the solar system, with the lowest mass. Mars has a diameter about 1.4 times that of the denser Mercury, giving them roughly the same surface gravity.


Since Pluto is not a planet what is the smallest planet?

Mercury is the smallest of the 8 "major planets" with about 5.5% of the mass of Earth. It is smaller but more massive than the largest moons of Jupiter and Saturn. Pluto is now considered a "dwarf planet" along with the asteroid Ceres and three other very distant Kuiper Belt objects.