|Born||November 22, 1973|
|Education||Massachusetts Institute of Technology|
University of Hawaii
|Known for||Discovery of Eris, Sedna and other trans-Neptunian objects|
Northern Arizona University
Chadwick A. "Chad" 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. In late August 2005, it was announced that Trujillo, along with Michael Brown and David Rabinowitz, had 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.
Trujillo attended Oak Park and River Forest High School in Oak Park, Illinois. He received his B.Sc. in physics from the Massachusetts Institute of Technology in 1995, and was a member of the Xi chapter of Tau Epsilon Phi, and received his Ph.D. in astronomy from the University of Hawaii in 2000.
In 2013 Trujillo became head of the Adaptive Optics/Telescope Department at the Gemini Observatory, and continued until 2016. As of 2016, Trujillo is assistant professor at the department of Physics & Astronomy at Northern Arizona University.
|see § List of discovered minor planets|
Trujillo is credited by the Minor Planet Center with the discovery and co-discovery of 54 numbered minor planets between 1996 and 2013, including many trans-Neptunian objects (TNOs) from the Kuiper belt (see table). The last major TNO, Eris, was considered by him, his team, NASA, and many others to be the tenth planet, but the International Astronomical Union assigned it to the new dwarf planet and plutoid status.
The known plutoids are:
- Quaoar, co-discovered with Brown
- Sedna , co-discovered with Brown and Rabinowitz, possibly the first known inner Oort cloud object
- Orcus, co-discovered with Brown and Rabinowitz
- Eris, co-discovered with Brown and Rabinowitz – the only known TNO more massive than Pluto
- Haumea, discovery credited to the Sierra Nevada Observatory, Spain (also see José Luis Ortiz Moreno).
- Makemake, co-discovered with Brown and Rabinowitz in 2005, one of the first 5 official dwarf planets.
List of discovered minor planets
The Minor Planet Center credits Chad Trujillo with the discovery and co-discovery of 57 minor planets during 1996–2013. His numerous co-discoverers were: A D. C. Jewitt, B J. X. Luu, C J. Chen, D K. Berney, E D. J. Tholen, F M. E. Brown, G W. Evans, H S. S. Sheppard, J D. L. Rabinowitz, K A. Udalski, L M. Kubiak and M R. Poleski.
|(15874) 1996 TL66||9 October 1996||list [A][B][C]|
|(15875) 1996 TP66||11 October 1996||list [B][A]|
|(15883) 1997 CR29||3 February 1997||list [C][A]|
|(19308) 1996 TO66||12 October 1996||list [A][B]|
|(20161) 1996 TR66||8 October 1996||list [A][B][C]|
|(24952) 1997 QJ4||28 August 1997||list [B][A][D]|
|(24978) 1998 HJ151||28 April 1998||list [B][E][A]|
|(26375) 1999 DE9||20 February 1999||list [B]|
|(33001) 1997 CU29||6 February 1997||list [A][B][C]|
|50000 Quaoar||4 June 2002||list [F]|
|(59358) 1999 CL158||11 February 1999||list [B][A]|
|(60608) 2000 EE173||3 March 2000||list [B][G]|
|65489 Ceto||22 March 2003||list [F]|
|66652 Borasisi||8 September 1999||list [B][A]|
|79360 Sila-Nunam||3 February 1997||list [B][A][C]|
|(79969) 1999 CP133||11 February 1999||list [B][A]|
|(79978) 1999 CC158||15 February 1999||list [A][B][H]|
|(79983) 1999 DF9||20 February 1999||list [B][A]|
|(84719) 2002 VR128||3 November 2002||list [F]|
|90377 Sedna||14 November 2003||list [F][J]|
|90482 Orcus||17 February 2004||list [F][J]|
|(91554) 1999 RZ215||8 September 1999||list [B][A]|
|(118228) 1996 TQ66||8 October 1996||list [C][A][B]|
|(119951) 2002 KX14||17 May 2002||list [F]|
|(120178) 2003 OP32||26 July 2003||list [F][J]|
|(120348) 2004 TY364||3 October 2004||list [F][J]|
|(126154) 2001 YH140||18 December 2001||list [F]|
|(126155) 2001 YJ140||20 December 2001||list [F]|
|(129746) 1999 CE119||10 February 1999||list [B][A]|
|(134568) 1999 RH215||7 September 1999||list [A][B]|
|136199 Eris||21 October 2003||list [F][J]|
|136472 Makemake||31 March 2005||list [F][J]|
|(137294) 1999 RE215||7 September 1999||list [B][A]|
|(137295) 1999 RB216||8 September 1999||list [A][B]|
|(148112) 1999 RA216||8 September 1999||list [A][B]|
|(168700) 2000 GE147||2 April 2000||list [A][H]|
|(175113) 2004 PF115||7 August 2004||list [F][J]|
|(181867) 1999 CV118||10 February 1999||list [A][B]|
|(181868) 1999 CG119||11 February 1999||list [B][A]|
|(181871) 1999 CO153||12 February 1999||list [B][A]|
|(181902) 1999 RD215||6 September 1999||list [B][A]|
|(208996) 2003 AZ84||13 January 2003||list [F]|
|(250112) 2002 KY14||19 May 2002||list [F]|
|(307251) 2002 KW14||17 May 2002||list [F]|
|(307261) 2002 MS4||18 June 2002||list [F]|
|341520 Mors-Somnus||14 October 2007||list [H]|
|(385201) 1999 RN215||7 September 1999||list [A][B]|
|385571 Otrera||16 October 2004||list [H]|
|(385695) 2005 TO74||8 October 2005||list [H]|
|(415720) 1999 RU215||7 September 1999||list [B][A]|
|(469306) 1999 CD158||10 February 1999||list [B][A]|
|471143 Dziewanna||13 March 2010||list [K][L]|
|(471165) 2010 HE79||21 April 2010||list [H][M][K]|
|(471921) 2013 FC28||17 March 2013||list [H]|
|(503858) 1998 HQ151||28 April 1998||list [E][A][B]|
|(508792) 2000 FX53||31 March 2000||list [H][A]|
|(523597) 2002 QX47||26 August 2002||list [F]|
Satellites and uncredited discoveries
|Object||Discovery date||Type||Credit went to..|
|Haumea||December 28, 2004||DP||José Luis Ortiz Moreno et al.|
|(55565) 2002 AW197||January 10, 2002||TNO||The Palomar Observatory team with Michael Brown|
|2012 VP113||November 5, 2012||TNO||no official discoverers for unnumbered objects; candidate: S. S. Sheppard|
|(136108) Haumea I Hiʻiaka||January 26, 2005||Satellite||Michael Brown and the adaptive-optics team, D. L. Rabinowitz|
|(136108) Haumea II Namaka||July 30, 2005||Satellite||Michael Brown and the adaptive-optics team|
|(136199) Eris I Dysnomia||September 10, 2005||Satellite||Michael Brown and the adaptive-optics team: M. A. van Dam, A. H. Bouchez, D. Le Mignant, R. D. Campbell, J. C. Y. Chin, A. Conrad, S. K. Hartman, E. M. Johansson, R. E. Lafon, D. L. Rabinowitz, P. J. Stomski Jr., D. M. Summers, and P. L. Wizinowich|
Honors and awards
In 2006 he was named one of the Science Spectrum Magazine Trailblazer, top minority in science.
- Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (12101) Trujillo. Springer Berlin Heidelberg. p. 776. ISBN 978-3-540-00238-3. Retrieved 26 July 2016.
- "136199 Eris (2003 UB313)". Minor Planet Center. Retrieved 26 July 2016.
- Brown, Michael E.; Schaller, Emily L. (June 2007). "The Mass of Dwarf Planet Eris". Science. 316 (5831): 1585. Bibcode:2007Sci...316.1585B. doi:10.1126/science.1139415. PMID 17569855. Retrieved 26 July 2016.
- "UH Alumnus Chad Trujillo Helps in Discovery of 10th Planet". Nupepa. August 2005. Archived from the original on 13 August 2009. Retrieved 26 July 2016.
- "Chad Trujillo CV" (PDF).
- "Minor Planet Discoverers (by number)". Minor Planet Center. 25 September 2018. Retrieved 16 October 2018.
- "136108 Haumea (2003 EL61)". Minor Planet Center. Retrieved 26 July 2016.
- "136472 Makemake (2005 FY9)". Minor Planet Center. Retrieved 26 July 2016.
- "Dwarf Planets and their Systems". US Geological Survey Gazetteer of Planetary Nomenclature. Retrieved 16 October 2018.
- Brown, M. E.; Bouchez, A. H.; Rabinowitz, D.; Sari, R.; Trujillo, C. A.; van Dam, M.; et al. (October 2005). "Keck Observatory Laser Guide Star Adaptive Optics Discovery and Characterization of a Satellite to the Large Kuiper Belt Object 2003 EL61". The Astrophysical Journal. 632 (1): L45–L48. Bibcode:2005ApJ...632L..45B. doi:10.1086/497641. Retrieved 16 October 2018.
- "SCIENCE SPECTRUM MAGAZINE ANNOUNCES TOP MINORITIES IN SCIENCE" (PDF). May 8, 2006. Retrieved April 4, 2018.
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