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LiDO; orbital classification from precision tracking

Presentation #209.08 in the session TNO Theory/Formation and Observational Surveys (Oral Presentation)

Published onOct 23, 2023
LiDO; orbital classification from precision tracking

The Large inclination Distant Objects (LiDO) survey discovered 148 objects in an off-ecliptic TNO discovery survey. Objects were discovered in 2020B and 2021A using the Canada-France-Hawaii Telescope (CFHT). Subsequent to discovery, nearly all objects were tracked for 3 years, in order to obtain high quality orbits with uncertainties small enough for confident classification of resonant TNOs. Using 200 clones of each object (generated by resampling the astrometry within the measured uncertainties), we have run 30 Myr dynamical integrations to classify all objects from the survey. While the vast majority of the TNOs detected by LiDO are secure in their dynamical classification, using many clones allows us to identify objects where the orbit uncertainty still spans a resonance stability limit, ie. objects which would benefit from additional tracking observations. We here present the results of this careful tracking and classification process, including discussion of objects on particularly interesting orbits, and plans for population modeling. In combination with the fully characterized discovery characteristics (ie. well understood discovery biases) and low tracking loss, these classified objects can be used to evaluate the validity of giant planet migration and Kuiper Belt emplacement models.

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