Chad Trujillo

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Chad Trujillo

Chadwick A.

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Trans-Neptunian objects discovered: 12
(50000) Quaoar June 4, 2002
November 3, 2002
(90377) Sedna November 14, 2003
(90482) Orcus February 17, 2004
May 17, 2002
July 26, 2003
October 3, 2004
December 18, 2001
December 20, 2001
(136108) Haumea December 28 2004
(136472) Makemake March 31 2005
Eris
Eris (dwarf planet)

'Eris' , Minor planet names '136199 Eris', is the largest known dwarf planet in the Solar System and the ninth-largest body known to orbit the Sun directly....
January 8 2005

with Michael E. Brown
Michael E. Brown

Michael E. Brown has been a professor of planetary astronomy at the California Institute of Technology since 2003. He was previously an associate professor at Caltech from 2002-2003 and an assistant professor at Caltech from 1997?2002....
with David L. Rabinowitz
David L. Rabinowitz

David Lincoln Rabinowitz is a researcher at Yale University. He has built Charge-coupled device cameras and software for the detection of near-Earth asteroids and Kuiper Belt Objects, and his research has helped reduce the assumed number of near-Earth asteroids by half, from 1,000-2,000 to 500-1,000 He has also assisted in the detection of...
with Glenn Smith
Glenn Smith

Glenn Smith is a retired professional ice hockey player who played nine games in the National Hockey League. He would play with the Toronto St. Pats....
sole credit went to José Luis Ortiz Moreno
José Luis Ortiz Moreno

Jos? Luis Ortiz Moreno is an astronomer, and former Vicedirector of Technology at the Instituto de Astrof?sica de Andaluc?a , Spain. He leads a team working on minor planet at the Sierra Nevada Observatory in Granada, Spain....
et al.

Chadwick A. "Chad" Trujillo (born 22 November 1973), is an astronomer and the co-discoverer of the dwarf planet
Dwarf planet

A dwarf planet, as defined by the International Astronomical Union , is a celestial body orbiting the Sun that is massive enough to be rounded by its own gravity but has not Clearing the neighbourhood of planetesimals and is not a natural satellite....
Eris
Eris (dwarf planet)

'Eris' , Minor planet names '136199 Eris', is the largest known dwarf planet in the Solar System and the ninth-largest body known to orbit the Sun directly....
.

Trujillo works with computer software and has examined the orbits of the numerous trans-Neptunian object
Trans-Neptunian object

A trans-Neptunian object is any object in the solar system that orbits the sun at a greater distance on average than Neptune . The Kuiper belt, scattered disk, and Oort cloud are three divisions of this volume of space....
s (TNOs), which is the outer area of the solar system that he specialized in. In late August 2005, it was announced that Trujillo, along with Michael E. Brown
Michael E. Brown

Michael E. Brown has been a professor of planetary astronomy at the California Institute of Technology since 2003. He was previously an associate professor at Caltech from 2002-2003 and an assistant professor at Caltech from 1997?2002....
and David L. Rabinowitz
David L. Rabinowitz

David Lincoln Rabinowitz is a researcher at Yale University. He has built Charge-coupled device cameras and software for the detection of near-Earth asteroids and Kuiper Belt Objects, and his research has helped reduce the assumed number of near-Earth asteroids by half, from 1,000-2,000 to 500-1,000 He has also assisted in the detection of...
, had discovered Eris
Eris (dwarf planet)

'Eris' , Minor planet names '136199 Eris', is the largest known dwarf planet in the Solar System and the ninth-largest body known to orbit the Sun directly....
. This was the first TNO known to be larger than the planet Pluto. Later in 2005, the TNO was revealed to have a moon.

Early career
Trujillo attended Oak Park and River Forest High School
Oak Park and River Forest High School

Oak Park and River Forest High School, or OPRF, is a public four-year high school located in Oak Park, Illinois, a western suburb of Chicago, Illinois, in the United States....
in Oak Park, Illinois
Oak Park, Illinois

Oak Park, Illinois is a suburb bordering the west side of the City of Chicago in Cook County, Illinois, Illinois, United States. It is the twenty-fifth largest city in Illinois....
. He received his B.Sc. in physics
Physics

Physics is the natural science which examines basic concepts such as energy, force, and spacetime and all that derives from these, such as mass, charge, matter and its Motion ....
from the Massachusetts Institute of Technology
Massachusetts Institute of Technology

The Massachusetts Institute of Technology is a private university research university located in Cambridge, Massachusetts, Massachusetts, United States....
in 1995, and was a member of the Xi chapter of Tau Epsilon Phi
Tau Epsilon Phi

Tau Epsilon Phi is an United States fraternities and sororities with approximately 25 active chapters, chiefly located at universities and colleges on the East Coast of the United States....
, and received his Ph.D. in astronomy
Astronomy

Astronomy is the science of Astronomical object and Phenomenon that originate outside the Earth's atmosphere . It is concerned with the evolution, physics, chemistry, meteorology, and motion of celestial objects, as well as the physical cosmology....
from the University of Hawaii
University of Hawaii

The University of Hawaii System, formally the University of Hawaii and popularly known as UH, is a public, co-educational college and university system that confers associate, bachelor, master, doctoral and post-doctoral degrees through three university campuses, seven community college campuses, an employment training center, th...
in 2000.

Trujillo was later a postdoctoral scholar at Caltech
California Institute of Technology

The California Institute of Technology is a private university research university located in Pasadena, California, United States. Caltech maintains a strong emphasis on the natural sciences and engineering....
, and is currently an astronomer at the Gemini Observatory
Gemini Observatory

The Gemini Observatory is an astronomical observatory consisting of two telescopes at different sites. The Northern Operations Center is located in Hilo, Hawaii, and the Southern Operations Center is in La Serena, Chile....
in Hawaii
Hawaii

File:Pahoehoe and Aa flows at Hawaii.jpgThe State of Hawaii is a U.S. state in the United States, located on an archipelago in the central Pacific Ocean southwest of the continental United States, southeast of Japan, and northeast of Australia....
. He studies the Kuiper belt
Kuiper belt

The Kuiper belt , sometimes called the Edgeworth-Kuiper belt, is a region of the Solar System beyond the planets extending from the orbit of Neptune to approximately 55 Astronomical unit from the Sun....
and the outer solar system
Solar System

The Solar System consists of the Sun and those Astronomical object bound to it by gravity: the eight planets and five dwarf planets, their 173 known Natural satellite, and billions of Small Solar System body....
.

List of discoveries
He has discovered several trans-Neptunian object
Trans-Neptunian object

A trans-Neptunian object is any object in the solar system that orbits the sun at a greater distance on average than Neptune . The Kuiper belt, scattered disk, and Oort cloud are three divisions of this volume of space....
s (TNOs). The last major TNO, Eris, was considered by him, his team, NASA
NASA

The National Aeronautics and Space Administration is an agency of the Federal government of the United States, responsible for the nation's public list of space agencies....
, and many others to be the tenth planet, but the International Astronomical Union
International Astronomical Union

The International Astronomical Union is a collection of professional astronomers, at the Ph.D. level and beyond, active in professional research and education in astronomy....
assigned it to the new dwarf planet
Dwarf planet

A dwarf planet, as defined by the International Astronomical Union , is a celestial body orbiting the Sun that is massive enough to be rounded by its own gravity but has not Clearing the neighbourhood of planetesimals and is not a natural satellite....
status.

These objects include:
Quaoar
50000 Quaoar

50000 Quaoar is a Trans-Neptunian object and potential dwarf planet orbiting the Sun in the Kuiper belt. It was discovered on June 4, 2002 by astronomers Chad Trujillo and Michael E....
(with Brown)
Sedna
90377 Sedna

90377 Sedna is a trans-Neptunian object and a likely dwarf planet, discovered by Michael E. Brown , Chad Trujillo and David L. Rabinowitz on November 14, 2003....
(with Brown and Rabinowitz) — possibly the first known inner Oort cloud
Oort cloud

The Oort cloud is a hypothetical spherical cloud of comets which may lie roughly 50 000 astronomical unit, or nearly a light-year, from the Sun....
object.
Orcus
90482 Orcus

90482 Orcus is a Kuiper Belt object and a likely dwarf planet that was discovered by Michael E. Brown of California Institute of Technology, Chad Trujillo of the Gemini Observatory, and David L....
(with Brown and Rabinowitz)
Eris
Eris (dwarf planet)

'Eris' , Minor planet names '136199 Eris', is the largest known dwarf planet in the Solar System and the ninth-largest body known to orbit the Sun directly....
(with Brown and Rabinowitz) — first discovered TNO larger than Pluto.