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.
Earth and the Moon.
Some consider it to be a double planet or, more properly, a double dwarf planet. However it is currently not officially considered as such.
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.
First of all, Pluto is not a planet. It was considered a double planet because its largest moon Charon is half its size.
No, the moon is not considered a planet. It is a natural satellite that orbits around a planet, in this case, Earth.
No. Moon is considered as a "moon" or a satellite to the Earth.
The Moon is a natural satellite of Earth; it was never considered a planet.
A double planet describes two bodies of similar size and mass that are in orbit (not necessarily around each other) . The Earth and Moon would not be considered a double planet because of the great size and mass difference between the two. However, Pluto and its moon Charon COULD be classified as a double planet- both have similar sizes and mass, and orbit a point outside of one another.
No, at least not by the proper definitions. There are some definitions that would classify it as such, though, since the sun has a stronger grip on the moon than the Earth does. In billions of years, the Earth-Moon barycenter will finally be outside the Earth's surface so at that time the Earth-Moon may officially be considered a double planet rather than a planet and moon.
No
The moon itself is not considered a planet. It is Earth's only moon. Since Pluto is not considered a planet (as of 2006), the smallest planet in our solar system is Mercury.
No the moon is not a planet, it is a natural satellite of Earth.