Chad Trujillo

Chad Trujillo
Born (1973-11-22) November 22, 1973
EducationMassachusetts Institute of Technology
University of Hawaiʻi
Known forDiscovery of Eris, Sedna and other trans-Neptunian objects
Scientific career
FieldsPlanetary astronomy
InstitutionsGemini Observatory
Northern Arizona University

Chadwick A. Trujillo (born November 22, 1973) is an American astronomer, discoverer of minor planets and the co-discoverer of Eris, the most massive dwarf planet known in the Solar System.

Trujillo works with computer software and has examined the orbits of the numerous trans-Neptunian objects (TNOs), which is the outer area of the Solar System that he specialized in. Trujillo, along with Michael Brown and David Rabinowitz, discovered Eris in 2003. As a result of the discovery of the satellite Dysnomia, Eris was the first TNO known to be more massive than Pluto.