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When Pluto was still officially considered a "planet" in our solar system, it and it's moon Charon were considered by many to be a double planet system. Whenever a moon constitutes a considerable percentage of the host planet's mass, it may be considered a double planet system. For this reason, some consider the Earth and our moon to be a double planet system. Our system has by far the greatest planet to moon mass ratio; about 6:1. As for planets outside our solar system, I cannot say. Though there are many out there.
What else can I help you with?
How many double planet systems are in the solar system?
There are no double planet systems in our solar system. The closest to being considered a double planet are Pluto and its largest moon Charon, but since Charon is significantly smaller than Pluto, it is not classified as a double planet system.
Are Pluto and its moon Charon are considered a double planet System?
Some consider it to be a double planet or, more properly, a double dwarf planet. However it is currently not officially considered as such.
Which planet is no more in the solar system?
The planet that you may mean was the Planet Pluto, which was recently reclassified as a Dwarf Planet. It is also believed by many that what is now the asteroid belt, was once a planet.
Which is the planet is called double planet?
Within our own solar system, some view Pluto as being a double planet with it's moon Charon (which is half it's size).
Is charon a planet or a moon?
It is a moon of the dwarf planet Pluto. They are so nearly the same size it could almost be called a double planet system
What is the largest planet outside the solar system?
The largest planet outside our solar system is currently believed to be a gas giant known as WASP-17b, which is located about 1,000 light-years away from Earth. It is nearly twice the size of Jupiter, the largest planet in our solar system.
Witch planet doesn't have no moon?
In our solar system, Mercury and Venus are believed to have no moons.
What is the smallest planet?
Mercury is the smallest planet in our solar system. Pluto might have been the smallest planet, but it has now been reclassified as a "dwarf planet." The smallest planet in our solar system now is Mercury. There might well be billions of smaller planets outside for solar system. The smallest exoplanet found so far is about twice the size of the Earth.
Is Pluto Planet X?
No. Planet X was a proposed planet believed to orbit somewhere beyond Neptune based on an anomaly in the orbit of Uranus believed to be caused by the gravity of an unknown planet. Searches for planet X led to the discovery of Pluto, but later studies found that Pluto is not nearly massive enough to have caused the anomaly. It was later discovered that the apparent anomaly was due to a small miscalculation in the mass of Neptune.
What is the planet after earth?
After Earth, the next planet in our solar system is Mars. It is the fourth planet from the Sun and is known for its red color due to iron oxide on its surface. Mars is also believed to have liquid water in the past.
What planet is considered a double planet with its moon?
None. Pluto-Charon was almost considered one in 2006, though that would be a dwarf double planet rather than a true double planet as Pluto is not a planet. In billions of years the Earth and Moon will be a double planet. Also, the question is non-sensical because if it was a double planet then they would both be planets... so there would be no moon. A planet would be considered a double planet with it's opposite planet, not moon.
What is the nearest planet to WASP-17?
It is known as Wasp-17b, discovered in 2009. The planet is believed to have a radius 1.991 times (nearly double) that of Jupiter but a mass of only 0.486 times (less than half).
