FOUR are known at present.

"Plutoids" is another term for Dwarf Planets like Pluto. (The Dwarf Planet Ceres is not a Plutoid because it's in the asteroid belt.)

There are actually a few confirmed Plutoids in our solar system. Also there are some likely objects yet to be officially named as Plutoids. Most of them are only recently discovered due to new technology. Most of the new ones have a "codename" rather than an actual name.

The confirmed Plutoid Dwarf Planets are:

- Eris

- Pluto

- Makemake

- Haumea

Some Possible Plutoids:

- Sedna

- Orcus

- Quaoar

- 2002 TX300

- 2002 AW197

- 2003 AZ84

- 28978 Ixion

- 20000 Varuna

- 2004 GV9

- 38628 Huya

- 1996 TL66

- 2003 MW12

- 2005 RN43

- 2005 RN43

- 2003 OP32

- 2001 UR163

- 2004 SB60

- 2005 RM43

- 2004 UX10

- 1999 DE9

Then again, there is also a list of planet-like objects in space which could be Dwarf Planets. But they need to be assessed further with more research before they can be classed as a Dwarf Planet or an Asteroid.

We are constantly making new discoveries.

See the related links below for the full list of confirmed and possible Dwarf Planets.

There are currently 5 recognised Dwarf Planets.

• Ceres - is between Mars and Jupiter in the asteroid belt.
• Pluto
• Eris
• Makemake
• Haumea

For a list of dwarf planet candidates, see related link.

There are currently five known "dwarf planets", but it is certain that there are many more in the Kuiper Belt that have not yet been identified.

Any body in the Kuiper Belt with enough mass to attain "hydrostatic equilibrium" - meaning that it has enough mass that its gravity crushes it into a sphere - will be another "dwarf planet". There may be dozens or hundreds of them, but they are so small and far away that we haven't noticed them yet.

Wait about 6 more years, until the James Webb Space Telescope is launched. It ought to be able to pick out a few.

NASA's "New Horizons" spacecraft will reach the Kuiper Belt during July 2015 to study Pluto and its moons up close for the first time, and also other objects in the belt.

Because it is not a true planet, it's designation has been changed after much debate and a vote by the leading experts in the field of astronomy. There is some disagreement still over the requirements of planet-hood. For example, there is still a lot of debris floating around out there, much of it in the vicinity of planetary orbits. But the remaining debris is relatively tiny compared to the planets, and they cannot now gather enough material to ever be in contention for possession of a given orbit.

All major planets have cleared their paths of debris. Pluto spends the great majority of its time in what is called the Kuiper Belt, a huge field of rocky and icy bodies beyond Neptune, at least one of which is larger than Pluto. As a result, Pluto is considered not to have 'cleared its path'. It is one of many interesting Kuiper Objects.

A popular misconception is that Neptune is involved in Pluto's reclassification because Pluto's orbit is, for roughly 15 years per cycle, within Neptune's orbit, suggesting that Neptune is 'debris' in Pluto's path. This makes no sense, because one could conclude that Neptune has not cleared its path of debris (Pluto) and is therefore not a planet. And in comparison, Pluto would more easily be defined as debris of Neptune, rather than calling the huge Neptune debris of Pluto. The fact is that neither Pluto nor Neptune is 'debris' in the other's path. The orbits are not coplanar, and they have a special and exact harmonic relationship that prevents them from ever colliding. During exactly two orbits of Pluto, Neptune orbits exactly three times. There are other similar harmonic relationships in the solar system. This arrangement between Pluto and Neptune is stable, and only some spectacular disturbance by some force outside of the solar system could disrupt it.

Today, the most commonly-held views boil down to either random events or Divine creation. See also:

Is there evidence against Evolution

Quaoar or better (worse) known as 50000 Quaoar is a binary trans Neptunian object and a candidate for a dwarf planet.

It is approximately 6.493 353 Tm (43.405 AU) from the Sun.

It was discovered on June 4, 2002 by Chad Trujillo and Michael Brown.

Their are more than 3 dwarf planets. Some of the famous ones are Pluto and Ceres.
the three dwarf planets are Ceres Pluto and Eris
The three dwarf palnets are Pluto, Eris, and Ceres

Pluto, Eris, and Ceres

Yes, there is a celestial object called Sedna (90377 Sedna), which is a dwarf planet candidate orbiting far beyond Neptune and Pluto. Its closest approach to the Sun is about 1.5 times the maximum for Pluto, with an extreme elliptical orbit varying from 76 AU to 975 AU.

As the farthest identified object orbiting the Sun, Sedna takes about 12,000 Earth years to complete one orbit. It will reach its next closest approach to the Sun in the year 2075. Only the dwarf planet Eris is current farther from the Sun.

Its size is estimated at approximately three-quarters the size of Pluto, or about 1,000 miles (1200-1600 km) in diameter.

(For size comparison with Earth, Moon and Pluto, please see the link below)

More on Sedna

Sedna rotates very slowly. It takes at least 20 days to complete a rotation, maybe as long as 50 days. The gravitational pull of a moon would be the best explanation for this slow rotation. Almost all other minor bodies in the solar system rotate in a matter of hours. Pluto has a six-day rotation because it has a satellite, Charon. But Sedna has no moon.