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What planets have only 1 known moon?

Updated: 8/9/2023
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15y ago

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No known planet does. Earth is the only planet in the solar system to have only one moon, but it is one of the largest moons in the solar system. Mars has two tiny moons named Phobos and Deimos. The giant planets of the outer solar system all have an assortment of moons big and small.

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7y ago
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13y ago

Pluto is not considered a planet anymore as defined by the IAU in 2006. Up until then, Pluto was the only outer planet with one moon, Charon. Currently, the Earth is the only planet with 1 moon.

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14y ago

In our solar system, Earth is the only planet that has one moon.

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The above is mainly true BUT Earth has a second moon, of sorts. Cruithne discovered in 1986, and then re-found in 1997 is a 3-mile-wide (5-km) satellite, which takes 770 years to complete a horseshoe-shaped orbit around Earth,

Also for some extra information, the minor planet Eris also has one moon as far as we can tell at present.

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11y ago

The only planet in our Solar System with only one moon is the Earth.

Mercury and Venus do not have a moon, and all the other planets have more than one.

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13y ago

The only planet that has one moon is The Earth - and it's far from being tiny.

You're probably thinking of the dwarf planet Eris which has a small moon Dysnomia.

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16y ago

Earth has one moon.

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15y ago

Earth

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Q: What planets have only 1 known moon?
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Related questions

Which planets in your solar system does not have at least 1 moon?

Mercury and Venus. They are the only planets without a moon.


What major planets have only 1 moon?

Earth


What plannets only have 1 moon?

Earth is the only planet known to have only 1 moon.


Should planets have more then 1 moon?

no because there is only one you just like there is only moon and that is what makes us original.


Dose earth have thirteen moons?

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What planets has at least 1 moon?

All of the planets in the Solar System except for Mercury and Venus have at least one moon.


How many planets are bigger than the moon?

There are two planets large than Uranus in the same solar system: Saturn and Jupiter. Uranus is 400 percent of the size of Earth whereas Saturn and Jupiter are 945 percent and 1120 percent the size of Earth.


How many planets are orbiting Pluto?

none, but it does have 1 moon


What are the atmospheres of the four inner planets?

all have 1 moon


Which planet has at least 1 moon?

earthAll eight planets have at least one moon, except for Venus and Mercury. Some planets have many moons, over 60 for Jupiter and Saturn.


What inner planet has at least 1 moon?

Of the inner planets, Earth has one moon and Mars has two.


What are planets that have more than 1 moon?

All planets in the solar system except Mercury, Venus and the Earth.