<!-- ARTICLE'S CONTENT BEGINS BELOW THIS LINE --> is the moon of the Trans-Neptunian object . It was discovered in April 2001 by Christian Veillet and Alain Doressoundiram on images taken December 21, 2000 and December 22, 2000. Other images previously obtained by other observers were used to confirm the binary nature of the object and to help pin down its orbit. This was the first binary Kuiper Belt object (KBO).