In September 2006 it was reduced to a number--number 134340 in the catalog of minor planets
The 
region around Pluto and Charon was reduced in brightness so that all four 
objects could .... On September 13, 2006, the IAU included Pluto, Eris, and the 
Eridian moon... [DOC] [TLE] September, 2006 - Vigyan Prasar [PAR] Sep 15, 2006 ... Prasar family.