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Can two planets orbit each other?

Updated: 8/11/2023
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9y ago

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No. That would make it a moon.

Yes. Planets CAN orbit other planets. Pluto and Charon are a Binary planetary system, with both planets orbiting each other around a common center of gravity that exists in the space between them. However, as they are the only binary planets we know of, it seems to be a very rare occurrence.

Planets can also be captured by other planets to become a moon during the early formation of a star system. It is believe many of Jupiter and Saturn's moons were originally planets.

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13y ago
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9y ago

Yes. Imagine that the Moon was the same size as the Earth. The Earth and Moon would orbit each other, and the pair of them together would still orbit the Sun. Picture a baton twirling in your hand, as your arm swing around in a circle. The two endpoints of the baton both orbit each other, and the entire two-planet system of the baton is itself orbiting your shoulder. Thus, this means that it depends on one's frame of reference when observing orbits. For example, the geocentric model assumed all celestial bodies were orbiting around the Earth including planets.

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14y ago

no the sun stays still and the planets orbit the sun while the moons orbit the planets!!!!!

thats not my question. Of course in this solar system that happens. I.e. planets orbit the sun. But is it possible for a sun to orbit a planet in a solar system, I turn you to this link http://news.bbc.co.uk/1/hi/sci/tech/8077302.stm . If the mass of the sun was smaller than the planet would that mean that the sun would orbit the planet. Or despite the size and mass of a sun it will always have the planets circling it. I'm not sure.. thus my question

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12y ago

Yes, planets DO orbit other planets. Even in our own solar system. The dwarf planets Pluto and Charon (previusly considered its moon) orbit each other, with the center of their orbits being in the space between them. Pluto and Charon do have moons, a pair of them orbiting both Pluto and charon's common center of gravity.

Brown dwarfs, very large objects too small to ignite into stars, have been seen to have planets orbiting them by themselves in the depths of space. Brown dwarfs when orbiting stars are considered planets. Since the Brown Dwarfs in question don't orbit stars themselves, the objects orbiting them are not moons.

A small number of exoplanets have been seen to orbit each other in other star systems.

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11y ago

No two objects can occupy the same space at the same time.

However it is entirely possible that two planets could share the same orbit of a star but be at different points along that orbit.

Planets were formed by matter condensing and forming planet's, or proto planets colliding to form planets and moons as in the case with the Earth. Given the number of stars in the Galaxy, and the number of planets orbiting those stars it is probable that there is a star with two planets sharing the same orbit.

This subject was the plot line in a Science Fiction film in the 1969 British science-fiction film Doppelgängerdirected by Robert Parrish.

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9y ago

No, a star has an extreme amount of gravity.

And when galaxies are formed, the dust cloud circling the stars form planets.

Hope that helped!

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14y ago

In our solar system, planets orbit the Sun, they do not orbit each other.

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9y ago

The planets in the solar system all orbit the Sun and not each other. It might be possible for a pair of planets to orbit each other in another solar system.

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Q: Can two planets orbit each other?
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Continue Learning about Astronomy

Do The planets maintain circular orbits around the Sun?

The orbit of the planets in our Solar system are not perfectly circular, but eliptical. Each planet also has its own unique orbit, no two planets share an identical orbit. Because of the elliptical (oval) orbit of planets some get close to each other or cross the path of another planet's orbit.


What two forces work together to keep the planets in orbit around the sun?

The two forces that work together to keep the planets in orbit around the sun are gravity and inertia.


What keeps the planets in orbit around the sun?

Gravity, combined with the velocities of the planets, keeps the planets in orbit around the Sun.Gravity between any body, such as a planet, and the Sun is one factor. Also the planet has a velocity. These two things combine to keep the planet in orbit around the Sun.Gravitation. The suns gravitational pull. The huge mass of the sun means it has a huge gravitational pull, keeping all of the planets in place. There is also the planets velocity that would take the planet away from the sun if there was no gravity, so these two forces act against each other.


What two things keep the planets in orbit?

gravity and string


What is the barycenter of the solar system?

The barycenter (or barycentre; from the Greek βαρύκεντρον) is the point between two objects where they balance each other. In other words, it is the center of gravity where two or more celestial bodies orbit each other. When a moon orbits a planet, or a planet orbits a star, both bodies are actually orbiting around a point that lies outside the center of the greater body. For example, the moon does not orbit the exact center of the earth, instead orbiting a point outside the earth's center (but well below the surface of the Earth) where their respective masses balance each other. The barycenter is one of the foci of the elliptical orbit of each body. It seems to me then, that each planet has its own different barycenter with the Sun. It is a relation between two objects, and since their are nine planets I don't think the term applies to an overall relation between the Sun and all the planets at once. On the other hand, the definition above does say "...where two or more celestial bodies orbit each other." It is true that the planets are not orbiting one another, but each of the planets is affected by every other as well as by the sun. There might therefore be a single solar system barycenter, and it would likely never leave its wandering path deep within the sun. I don't think it's an idea that will have much use any time soon.

Related questions

What is it called when two planets switch orbit?

planets dont "switch" orbit, but there are those that orbit each other, and those, like mars, that have retrograde motion, which makes it appear to orbit backwards


Do The planets maintain circular orbits around the Sun?

The orbit of the planets in our Solar system are not perfectly circular, but eliptical. Each planet also has its own unique orbit, no two planets share an identical orbit. Because of the elliptical (oval) orbit of planets some get close to each other or cross the path of another planet's orbit.


How many planets are orbiting Mars?

None. Mars is a planet which orbits The Sun. Planets do not orbit other planets. Mars does have two moon which orbit around it.


How many planets orbit around Mars?

No planets orbit around Mars. There are two moons that orbit around Mars.


What planets orbit mars?

Mars has two small moons named Phobos and Deimos, but no planets orbit it.


Which two planets orbit the sun not the earth?

All the planets in our solar system orbit the Sun, not the Earth.Mercury and Venus orbit between the Sun and the Earth's orbit.


Position of inferior plant between earth and sun?

There are two inferior planets. One is venus-or sister planet-and the other in mercury. These two are inferior planets because their orbit is inside of the earths orbit. best time to see these planets is when they are their furthest from the sun. :)


What two forces work together to keep the planets in orbit around the sun?

The two forces that work together to keep the planets in orbit around the sun are gravity and inertia.


What is the orbit of a planet that has two suns?

If two stars orbit each other, the planet may orbit one or the other, or it might orbit at a distance from both. The inner orbits are stable, and the outer orbit can be stable. Intermediate orbits, however, would cause the planet to either get swallowed or ejected. There are probably rogue planets as planets migrated into unstable orbits and were ejected. A rogue planet would be one wandering through the dark interstellar gulf. Extremely difficult for us to detect such things.


Why don't planets have the same orbit?

If they did then they would collide. They could merge into a larger planet or get blasted into space. In the latter case, the smaller parts would continue in individual orbits until they were attracted, by gravity, into other planets or coalesce into a new planet.


What is a double planet?

Two planets orbiting each other. The barycenter of the planets must not lie within either planet but must be in free space between them. (The planets orbit a central point as opposed to a planet-sattelite configuration where one body orbits another)


Where is Venus in the Solar System compared to the Earth?

In the solar system, Earth is the third planet from the sun. Venus is the second planet from the sun. The distance between Venus and the Earth varies as both the planets orbit the sun. For example, the closest the two planets are to each other as they are orbiting is about 42 million kilometres, yet the furthest away these two planets are from each other is about 258 million kilometres.