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How Big Is 2001 KX76?
Size comparison of 2001 KX76 and other known objects. From NASA Astronomy Picture of the Day. (August 30, 2001)
http://www.antwrp.gsfc.nasa.gov/
New Horizons
An unmanned Pluto-Kuiper Belt probe study. New Horizons, if approved, would launch in 2006.
http://www.pluto.jhuapl.edu/