dwarf-planet

For most of its orbit Sedna is farther from the Sun than any other known dwarf planet candidate.

A recently-discovered dwarf planet, named Sedna, has an extra-long and usual elliptical orbit around the Sun.

The only other known example of such an oddly angled orbit was Pluto, until its demotion to dwarf planet status.

That's when astronomers turned up a handful of large trans-Neptunian objects that led to the creation of the "dwarf planet" category.

After a year in orbit around Vesta, Dawn will travel on to the dwarf planet Ceres.

Pluto, now classed as a dwarf planet, is so small and so distant that its surface has been a mystery to astronomers.

The Pluto used to be the ninth planet in the solar system, but now it is listed as the Dwarf Planet.

and Pluto, which is now classed as a "dwarf planet" , also failed to fit in with Bode's neat pattern when it was found in 1930.

If so, they may be able to slip past the velvet rope and into the exclusive dwarf-planet club.

Pluto and its moonsAstronomers using the Hubble Space Telescope have identified another moon around the dwarf planet Pluto.

Now Pluto will be called a dwarf planet along with at least two others. Xena and Ceres.

According to IAU, a "dwarf planet" should have an orbit around the Sun.

He thinks Eris is a fitting name for the new dwarf planet because astronomers have argued for so long over how to define a planet.

In 1930, astronomer Clyde Tombaugh discovered the dwarf planet Pluto while looking at photographs of the night sky.

Between the orbits of Mars and Jupiter lies the asteroid belt, which includes the dwarf planet Ceres.

Nasa says the dwarf planet on the edge of our solar system is becoming increasingly red.

Pluto is now considered a dwarf planet dwelling in the Kuiper belt.

Also located in this area, but far beyond the range of amateur telescopes, is the dwarf planet Eris.

Pluto is a dwarf planet by the above scientific definition, as are one or more recently discovered large trans- Neptunian objects.

And Pluto itself has recently lost its planetary distinction and been busted down to dwarf planet.

Mankind does not even have a term for the type of smoldering brown dwarf Planet X represents.

Dawn will spend one year orbiting Vesta, then travel to the dwarf planet Ceres.

One was a decision to name Pluto a "dwarf planet" .

It is the solar system's fifth dwarf planet, in the same category and region as Pluto.

So the committee suggested it be called a dwarf planet.

Indeed dwarf planet is also a negative description.

It is just weeks since Pluto was redefined asa dwarf planet.

It measures about 975 km, and in 2006 it was classified as a dwarf planet.

And until Pluto crashes into many of them and gains mass, it will remain a dwarf planet.

But while the recently demoted dwarf planet is in the right place, it is far too tiny to have any such influence.

Dawn's mission will take it to the asteroid Vesta in 2011 and 2012, and to the dwarf planet Ceres in 2015.

Any object that doesn't meet this 3rd criteria is considered a dwarf planet.

Is it an asteroid, dwarf planet, comet or quasar? You've got three seconds, go!

Eris is real, but it is a dwarf planet similar to Pluto that will remain in the outer solar system;