Northern New Jersey Weather Weather Forecasts for Northern New Jersey, New Jersey, Westwood, Bergen County, Passaic County, Morris County, Hudson County, Union County, Essex County, Warren County and Sussex County by meteorologist Ksvec . th. x
Eris, the largest dwarf planet. Eris is a dwarf planet that lies at the outer reaches of our solar system. It was discovered in 2005 by professional astronomers who were examining images taken at California's Palomar Observatory two years previously.
The solar system's erratic ninth planet, Pluto, was assigned to the new âdwarf planetâ category along with four other bodies, all tinier than Earthâs moon. Some astronomers expect there may be as many as 50 dwarf planets in the solar system. Eris, the largest dwarf planet, is only slightly bigger than Pluto, at 1,445 miles in diameter (2,326 km). Discovered in 2003, Eris orbits at an average distance of 68 AU (that is, 68 times the Earthâs distance from the sun) and takes 561.4 Earth years to circle the sun. Eris has the orbit that is most highly inclined of all the dwarf planets, tilted nearly 47 degrees from the plane of the planetsâ orbits. A day on Eris takes 25.9 hours.