Program: GS-2022B-Q-111

Title:Observational Characterization of Active Main-Belt Comets
PI:Henry Hsieh
Co-I(s): Jana Chesley, Michael Kelley, Matthew Knight, Nick Moskovitz, Scott Sheppard, Audrey Thirouin, Chad Trujillo

Abstract

We propose observations to characterize the activity of 12 main-belt comets (MBCs), all of which are expected to be potentially active in 2022B. MBCs are rare objects that are dynamically indistinguishable from main-belt asteroids, yet display cometary activity indicative of sublimating ice. Our objectives are (1) to search for recurrent activity for MBC candidates 426P and 427P and ascertain if their activity is likely to be sublimation-driven, and (2) to obtain monitoring observations to study the activity evolution of several currently active MBCs. Results of our analyses will be used to characterize short- and long-term activity evolution of MBCs, advancing our understanding of ice-bearing bodies in the inner solar system.

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