10th planet ----ERIS
NASA has revealed the 10th planet of the solar system, and it was been first named as the UB313., and later named as the planet Eris,here are some the descriptions of the planet Eris.
Eris, formally designated as the 136199Eris, which is the largest known dwarf planet in teh solar system and the ninth largest body known to orbit the Sun directly. It is approximately 2,500 kms in diameter and 27% more massive than planet Pluto.
Who Discovered it?
Eris was discovered by the team of MIKE BROWN, CHAD TRUJILLO, AND DAVID RABINOWITZ on Jan 5,2005 and the discovery was announced on July 29,2005.
Name:
Eris is named after the goddess Eris a personification of strife nad discord. The name assigned on September 13, 2006 following an unusually long period in which it was known by the provisional designation 2003 UB313 which was granted automatically by the IAU under the naming protocol for minor planets.
Orbit:
Eris has an orbital period of 557 years and as of 2009 lies at 96.7 Au from the sun almost its maximum possible distance. Eris currenlty has an apparent magnitude of 18.7, making it bright enough to be detectable to some amateur telescopes
Where is it?
The dwarf planet is the most distant object ever seen in orbit around the sun, even more distant than Sedna, the planetoid discovered almost 2 years ago. It is almost 10 billion miles from the sun and more than 3 times more distant than the next closest planet, Pluto and takes more than twice as long to orbit the sun as Pluto.
The dwarf planet can be seen using very high-end amateur equipment, but you need to know where to look. The best way to find precise coordinates (of this planet, or any other body in the solar system) is with JPL's horizons system. Click on "select target" and then enter "2003 UB313" under small bodies.
The orbit of the new dwarf planet is even more eccentric than that of Pluto. Pluto moves from 30 to 50 times the sun-earth distance over its 250 year orbit, while the new planet moves from 38 to 97 times the sun-earth distance over its 560 year orbit.
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