A Pluto-like radius and a high albedo for the dwarf planet Eris from an occultation

  title={A Pluto-like radius and a high albedo for the dwarf planet Eris from an occultation},
  author={Bruno Sicardy and Jos{\'e} Luis Ortiz and Marcelo Assafin and Emmanuel Jehin and Anaelle J. Maury and Emmanuel Lellouch and R. Gil Hutton and Felipe Braga-Ribas and Florent Colas and Daniel Hestroffer and J. J. Lecacheux and Françoise Roques and Pablo Santos-Sanz and Thomas Widemann and Nicol{\'a}s Morales and Ren{\'e} Duffard and Audrey Thirouin and Alberto J. Castro-Tirado and Martin Jel{\'i}nek and Petr Kubanek and A. Sota and R. S{\'a}nchez-Ram{\'i}rez and Alexandre Humberto Andrei and J. I. B. Camargo and Dario N. da Silva Neto and A. Ramos Gomes and Roberto Vieira Martins and Micha{\"e}l Gillon and Jean Manfroid and Gian Paolo Tozzi and Caisey Harlingten and Sergio Saravia and Raoul Behrend and Stefano Mottola and E. Garc{\'i}a Melendo and V. Peris and Juan Fabregat and Jos{\'e} Mar{\'i}a Madiedo and Luis Cuesta and M. Teresa Eibe and Aurora M. Ullan and Faustino Organero and Sensi Pastor and J. A. Reyes and S. Pedraz and A. P. de Castro and I. de la Cueva and Gustavo Muler and Iain A. Steele and Mar{\'i}a Cebri{\'a}n and Pilar Monta{\~n}{\'e}s-Rodrı́guez and Alex Oscoz and D. Weaver and Charles Jacques and W J B Corradi and F{\'a}bio P. Santos and Wilson Reis and Antonino Milone and Marcelo Emilio and Leonel Guti{\'e}rrez and Ricardo A. Vazquez and Hector M. Hernandez-Toledo},
The dwarf planet Eris is a trans-Neptunian object with an orbital eccentricity of 0.44, an inclination of 44 degrees and a surface composition very similar to that of Pluto. It resides at present at 95.7 astronomical units (1 au is the Earth-Sun distance) from Earth, near its aphelion and more than three times farther than Pluto. Owing to this great distance, measuring its size or detecting a putative atmosphere is difficult. Here we report the observation of a multi-chord stellar occultation… 
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