Sedna is a solar system body that is one ... has cleared debris from its orbit. Dwarf planets, while also in orbit around the sun and mostly round, have not cleared debris from their orbits.

Sedna's orbit is shown in orange while 2012 ... Researchers have discovered a new dwarf planet nearly 7.5 billion miles away from the sun. Even more intriguing, the discovery suggests the ...

may have stretched out the orbit of another dwarf-planet-size object called Sedna, discovered ten years ago, also orbiting far beyond Pluto. Based on the swath of sky that needed to be surveyed to ...

The dwarf planet Sedna, discovered in 2003, has an incredibly eccentric orbit, such that it can be anywhere between 76 AU and about 940 AU from the sun. Last year, Sheppard and Trujillo discovered ...

As explained in a pre-press paper [PDF] titled “Discovery of a dwarf planet candidate in an extremely wide orbit: 2017 OF201”, in 2014 scientists used Chile’s Blanco 4m telescope for a project called ...

What sets Sedna apart from the other known dwarf planet candidates is its enormous orbit, which takes it out towards the inner edge of the Oort cloud, the most distant region of the Solar System ...

OSSOS has discovered more than 500 objects beyond Neptune's orbit, but 2015 ... including Sedna, Quaoar and 2007 OR10, probably meet the dwarf-planet criteria as well, scientists have said.

At this moment, the crimson-hued dwarf planet is making its closest approach ... If that’s true, then Sedna’s original orbit would have been circular. It would have had to be knocked into ...

A recently discovered celestial body is rewriting our knowledge of the Kuiper Belt and maybe challenging the existence of the ...

For the dwarf planet candidate, one trip around the sun takes over 24,000 years. Its orbit challenges a proposed path for a hypothetical Planet Nine.

The potential dwarf planet takes roughly 11,400 years to circle the Sun, meaning just about one year has passed there since the dawn of agriculture on Earth. Sedna’s orbit leads some to rank it ...