Trans-Neptunian Objects Codexery

David C. Jewitt

Co-discoverer of the first Kuiper belt object beyond Pluto.

David C. Jewitt

David Clifford Jewitt (born 1958) is a British astronomer who studies the Solar System, focusing on its smaller objects. He works at the University of California, Los Angeles, holding roles as a Member of the Institute for Geophysics and Planetary Physics, Director of the Institute for Planets and Exoplanets, and professor in both the Department of Physics and Astronomy and the Department of Earth, Planetary and Space Sciences. His most famous achievement is co-discovering, with Jane Luu, the first object in the Kuiper belt beyond Pluto and its moon Charon.

Jewitt was born in London in 1958. His mother worked as a telephonist, and his father assembled industrial steel cutters on a production line. The family lived with his grandmother in a social housing project in Tottenham, north London. His interest in astronomy sparked in 1965 after he saw bright meteors, and grew with media coverage of NASA’s Apollo 8 and Apollo 11 missions in 1968 and 1969. His first telescope was a tabletop 40 mm refractor, a birthday gift from his grandparents. He later upgraded to a 150 mm reflector built by his uncle Malcolm, then to a homemade 250 mm instrument, becoming a serious amateur astronomer while still in school. He joined the Transient Lunar Phenomenon subsection of the British Astronomical Association’s Lunar Section, regularly sending in observation reports.

Jewitt attended local authority primary and secondary schools. He was largely self-taught, borrowing books from a traveling library to supplement the few his parents could afford. He first encountered physics at age twelve or thirteen, when a teacher introduced him to the subject. In 1976, with a local authority grant, he enrolled at University College London, studying astronomy, physics, mathematics, computing, electronics, metalwork, and technical drawing at both the Gower Street campus and the UCL Observatory in Mill Hill. His favorite module was a broad physics survey taught by Professor Sir Robert Boyd, a Christian space scientist who drove a Rolls-Royce. He graduated with a first-class honours B.Sc. in astronomy in 1979, alongside his friend Roly Drower, who later became a poet and environmental activist. Following advice from UCL professor Michael Dworetsky, Jewitt pursued postgraduate work at the California Institute of Technology in Pasadena. He became an Anthony Fellow there in 1979, earning an M.S.

Quick Facts

Birth Place
London, England
Fields
Astronomy, astrophysics
Workplaces
UCLA
Education
University College London
Thesis Year
1983
Doctoral Advisor
James Westphal
Known For
Discovery of the first body in the Kuiper belt
Awards
Shaw Prize (2012) / Kavli Prize (2012)

Facts from the source article.

Lore & Background

Jewitt's interest in astronomy began in 1965 after seeing bright meteors, and was fueled by the Apollo 8 and Apollo 11 missions. He built telescopes as a schoolboy and joined the British Astronomical Association. He earned a first class honours B.Sc. in astronomy from University College London in 1979, then pursued postgraduate studies at Caltech, earning an M.S. in 1980 and a Ph.D. in 1983. In 1992, after five years of searching, Jewitt and Jane Luu discovered 15760 Albion, the first Kuiper belt object other than Pluto and Charon. Jewitt has since identified dozens of other Kuiper belt objects, and his work helped reveal four distinct populations: dynamically cold classical, dynamically hot classical, scattered disc, and resonant Kuiper belt objects (including plutinos). He also discovered the Jovian moon Adrastea in 1979 and was the first astronomer to recover Halley's Comet in 1982.

Reader's Guide

Jewitt's discovery of 15760 Albion fundamentally changed the understanding of the outer Solar System. It revealed that Pluto was not unique but part of a large population of Kuiper belt objects, leading to the reclassification of Pluto as a dwarf planet by the International Astronomical Union in 2006. Jewitt considered the planet debate 'essentially bogus' but ultimately agreed with the decision. His subsequent surveys identified dozens more Kuiper belt objects and delineated four distinct dynamical populations, which informed models of Solar System formation and migration. These models suggest that Neptune migrated outward from a closer orbit, dragging Kuiper belt objects with it. Jewitt also discovered over seventy moons of Jupiter, Saturn, Uranus, and Neptune, and recovered Halley's Comet in 1982. The asteroid 6434 Jewitt was named in his honor, with Jane Luu calling him 'the consummate astronomer.'

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