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| Scott S. Sheppard | |
|---|---|
| Name | Scott S. Sheppard |
| Nationality | American |
| Fields | Astronomy, Planetary Science |
| Workplaces | Carnegie Institution for Science, University of Hawaii |
| Alma mater | California Institute of Technology, University of Arizona |
| Known for | Discovery of outer Solar System satellites, minor planets, interstellar object searches |
Scott S. Sheppard is an American astronomer and planetary scientist noted for his discoveries of numerous irregular satellites of the giant planets and small bodies in the outer Solar System. He is affiliated with the Department of Terrestrial Magnetism at the Carnegie Institution for Science and has collaborated with researchers at observatories including the Mauna Kea Observatories and the Cerro Tololo Inter-American Observatory. His work intersects with surveys and missions involving objects related to Jupiter, Saturn, Uranus, Neptune, and trans-Neptunian populations near Pluto and the Kuiper belt.
Sheppard completed undergraduate and graduate studies in astronomy and planetary science, training at institutions including the University of Arizona and the California Institute of Technology. During his graduate and postdoctoral years he worked with researchers connected to programs at the Lowell Observatory, the National Optical Astronomy Observatory, and the Institute for Astronomy (University of Hawaii), gaining experience with wide-field imaging, charge-coupled device techniques, and dynamical analysis used in searches for small Solar System bodies. His academic mentors and collaborators have included scientists associated with the Jet Propulsion Laboratory, the Space Telescope Science Institute, and the Max Planck Institute for Solar System Research.
Sheppard's career has emphasized observational surveys, dynamical classification, and follow-up astrometry of small bodies. He has led and participated in surveys using facilities such as the Subaru Telescope, Magellan Telescopes, Blanco 4m Telescope, and instruments at the Mauna Kea Observatories. His research addresses populations including irregular satellites of the giant planets, centaurs, scattered disk objects, detached trans-Neptunian objects, and distant extreme trans-Neptunian objects linked to hypotheses about a potential undiscovered outer planet. He has collaborated with researchers from the Carnegie Institution for Science, the University of Hawaii, Harvard–Smithsonian Center for Astrophysics, and the University of Arizona on projects combining observational discovery with numerical simulations performed using methods developed in the planetary dynamics community exemplified by work from groups at the University of California, Berkeley and the Southwest Research Institute.
Sheppard has also been involved in searches for interstellar objects and transient bodies, coordinating observations with teams connected to the Pan-STARRS survey, the Catalina Sky Survey, and follow-up facilities including Gemini Observatory and Keck Observatory to obtain photometry, spectroscopy, and astrometry.
Sheppard is credited with co-discoveries of numerous irregular satellites of Jupiter, Saturn, Uranus, and Neptune, expanding knowledge about capture processes and collisional families. His work contributed to identifying satellite groups that inform models of planetary formation and migration associated with scenarios like the Nice model and migration theories developed by researchers at institutions such as the Observatoire de la Côte d'Azur and the South African Astronomical Observatory. He has co-discovered distant trans-Neptunian objects and extreme objects whose orbits have been used in debates about a hypothetical distant planet beyond Neptune, a topic also investigated by scientists at the California Institute of Technology and the Massachusetts Institute of Technology.
Sheppard's surveys identified numerous small outer Solar System bodies, contributing to size distribution estimates, color population studies, and rotational photometry that relate to compositional interpretations connected to work on Comet 67P/Churyumov–Gerasimenko and primitive bodies studied by missions from European Space Agency and NASA such as Rosetta and New Horizons. His contributions to cataloging minor planets intersect with databases maintained by organizations like the Minor Planet Center and have supported target selection and context for missions and telescopic programs at facilities including Hubble Space Telescope and planned surveys like Vera C. Rubin Observatory.
Sheppard has received recognition from institutions and societies active in planetary science and astronomy, including honors tied to contributions to small-body discovery and observational campaigns coordinated with organizations such as the American Astronomical Society and the Royal Astronomical Society. He has been cited in naming conventions for minor planets and has been invited to present work at conferences hosted by the International Astronomical Union and symposia organized by the Division for Planetary Sciences.
- Sheppard, S. S.; collaborations with researchers from Carnegie Institution for Science and University of Hawaii on surveys reporting new irregular satellites of Jupiter, Saturn, Uranus, and Neptune published in journals circulated among members of the International Astronomical Union community. - Sheppard, S. S.; co-authored articles on extreme trans-Neptunian objects and the implications for a distant planetary perturber, with coauthors from institutions including California Institute of Technology and Harvard–Smithsonian Center for Astrophysics. - Sheppard, S. S.; papers on size distributions and colors of trans-Neptunian and centaur populations, cited by teams at the European Southern Observatory and the Max Planck Institute for Solar System Research.
Category:American astronomers Category:Planetary scientists Category:Discoverers of moons