n MNASSA : Monthly Notes of the Astronomical Society of South Africa - Dwarf planet 2003 UB313 and its moon named : news notes




Extracted from text ... news notes Dwarf planet 2003 UB313 and its moon named The dwarf planet formerly known as 2003 UB313 received the official designation (136199) Eris (pronounced ee'-ris) from the International Astronomical Union on 13 September 2006. Eris is the second dwarf planet in a sub-category of objects of which Pluto is the prototype. The name Eris was proposed by one of the discoverers, Michael Brown (Caltech, USA) - it was discovered on 5 January 2005 by M.E. Brown, C.A. Trujillo and D. Rabinowitz at the Palomar Observatory. The name was accepted almost unanimously by the Working Group for Planetary System ..


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