Link 1: Asteroid with rings is the first of its kind - CNN.com
Link 2: New dwarf planet discovered at solar system's edge - CNN.com...Chariklo is fairly small -- 250 kilometers (150 miles) in diameter. It is classified as a "centaur," an object that has an unstable orbit and crosses giant planets' orbits. Mythological centaurs had both human and horse features, while centaurs in the solar system may have both comet and asteroid characteristics.
The asteroid is only the fifth solar system object whose rings have been detected. Jupiter, Saturn, Uranus and Neptune also have rings...
...The dwarf planet's current name is 2012 VP113, and it is located in a "wasteland or badland of the solar system," said astronomer Chad Trujillo, head of adaptive optics at Gemini Observatory in Hawaii and co-discoverer of this object. His study was published Wednesday in the journal Nature.
"The big question is, how is this formed? How can you get an object out there?" he said. "We really don't know an answer to that yet."
This dwarf planet is unusual because of its orbit, Trujillo said. On its elliptical path, the closest it ever comes to the sun is still very far away from the rest of the solar system. Its full orbit is farther than the orbit of any other object we know of in the solar system...
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