Candidate Distant Trans-Neptunian Objects Detected by the New Horizons Subaru TNO Survey

Article

Fraser, Wesley C., Porter, Simon B., Peltier, Lowell, Kavelaars, JJ, Verbiscer, Anne J., Buie, Marc W., Stern, S. Alan, Spencer, John R., Benecchi, Susan D., Terai, Tsuyoshi, Ito, Takashi, Yoshida, Fumi, Gerdes, David W., Napier, Kevin J., Lin, Hsing Wen, Gwyn, Stephen D. J., Smotherman, Hayden, Fabbro, Sebastien, Singer, Kelsi N., ..., Throop, Henry. 2024. "Candidate Distant Trans-Neptunian Objects Detected by the New Horizons Subaru TNO Survey." The Planetary Science Journal. 5 (10). https://doi.org/10.3847/PSJ/ad6f9e
Article Title

Candidate Distant Trans-Neptunian Objects Detected by the New Horizons Subaru TNO Survey

ERA Journal ID214329
Article CategoryArticle
AuthorsFraser, Wesley C., Porter, Simon B., Peltier, Lowell, Kavelaars, JJ, Verbiscer, Anne J., Buie, Marc W., Stern, S. Alan, Spencer, John R., Benecchi, Susan D., Terai, Tsuyoshi, Ito, Takashi, Yoshida, Fumi, Gerdes, David W., Napier, Kevin J., Lin, Hsing Wen, Gwyn, Stephen D. J., Smotherman, Hayden, Fabbro, Sebastien, Singer, Kelsi N., Alexander, Amanda M., Arimatsu, Ko, Banks, Maria E., Bray, Veronica J., El-Maarry, Mohamed, Ferrell, Chelsea L., Fuse, Tetsuharu, Glass, Florian, Holt, Timothy R., Hong, Peng, Ishimaru, Ryo, Johnson, Perianne E., Lauer, Tod R., Leiva, Rodrigo, Lykawka, Patryk S., Marschall, Raphael, Nunez, Jorge I., Postman, Marc, Quirico, Eric, Rhoden, Alyssa R., Simpson, Anna M., Schenk, Paul, Skrutskie, Michael F., Steffl, Andrew J. and Throop, Henry
Journal TitleThe Planetary Science Journal
Journal Citation5 (10)
Article Number227
Number of Pages20
Year2024
PublisherAmerican Astronomical Society
ISSN2632-3338
Digital Object Identifier (DOI)https://doi.org/10.3847/PSJ/ad6f9e
Web Address (URL)https://iopscience.iop.org/article/10.3847/PSJ/ad6f9e
AbstractWe report the detection of 239 trans-Neptunian objects discovered through the ongoing New Horizons survey for distant minor bodies being performed with the Hyper Suprime-Cam mosaic imager on the Subaru Telescope. These objects were discovered in images acquired with either the r2 or the recently commissioned EB-gri filter using shift and stack routines. Due to the extremely high stellar density of the search region downstream of the spacecraft, new machine learning techniques had to be developed to manage the extremely high false-positive rate of bogus candidates produced from the shift and stack routines. We report discoveries as faint as r2 similar to 26.5. We highlight an overabundance of objects found at heliocentric distances R greater than or similar to 70 au compared to expectations from modeling of the known outer solar system. If confirmed, these objects betray the presence of a heretofore-unrecognized abundance of distant objects that can help explain a number of other observations that otherwise remain at odds with the known Kuiper Belt, including detections of serendipitous stellar occultations, and recent results from the Student Dust Counter on board the New Horizons spacecraft.
KeywordsKuiper Belt; Orbit determination ; Convolutional neural networks; Trans-Neptunian objects
Contains Sensitive ContentDoes not contain sensitive content
ANZSRC Field of Research 20205101. Astronomical sciences
Byline AffiliationsUniversity of Victoria, Canada
National Research Council of Canada, Canada
Southwest Research Institute, United States
University of British Columbia, Canada
University of Virginia, United States
Planetary Science Institute, United States
National Astronomical Observatory of Japan, Japan
University of Occupational and Environmental Health, Japan
Chiba Institute of Technology, Japan
University of Michigan, United States
University of Washington, United States
NASA Goddard Space Flight Center, United States
University of Arizona, United States
Khalifa University, United Arab Emirates
Independent Astronomer, United States
Centre for Astrophysics
University of Texas at Austin, United States
NSF's National Optical Infrared Astronomy Research Laboratory (NOIRLab), United States
Institute of Astrophysics of Andalusia, Spain
Kindai University, Japan
National center for scientific research (CNRS), France
Johns Hopkins University, United States
Space Telescope Science Institute, United States
Grenoble Alpes University, France
Lunar and Planetary Institute (USRA), United States
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