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Abstract We have discovered evidence of cometary activity originating from (551023) 2012 UQ₁₉₂(alternately designated 2019 SN₄₀), which we dynamically classify as a Jupiter Family Comet (JFC). JFCs have eccentric Jupiter-crossing orbits and originate in the Kuiper Belt. Analysis of these objects can provide vital information about minor planets in the outer solar system, such as the distribution of volatiles within the solar system. Activity on 2012 UQ₁₉₂was first recognized by volunteers on our NASA Partner Citizen Science projectActive Asteroids. Through our own examination of archival image data, we found a total of ∼30 images presenting strong evidence of activity near perihelion during two separate orbits. 2012 UQ₁₉₂is notable as we found it to be recurrently active. When 2012 UQ₁₉₂approaches its perihelion passage in 2027 September, we predict it will reactivate and will be a prime subject for follow-up observations. 

Abstract We report that minor planet 2004 CV₅₀displayed cometary activity in the form of a short, diffuse tail, first identified by volunteers of the Citizen Science programActive Asteroids, a NASA Partner program hosted on theZooniverseonline platform. The activity is present in three images, from UT 2020 February 15 and UT 2020 March 14, that were acquired with the Dark Energy Camera on the Blanco 4 m telescope at the Cerro-Tololo Inter-American Observatory in Chile. We find that 2004 CV₅₀is most likely an active quasi-Hilda object rather than an active asteroid, despite 2004 CV₅₀having a Tisserand parameter with respect to Jupiter of 3.06. 

Abstract We present the discovery of cometary activity on 2018 OR as part of ourActive Asteroidsproject, a NASA Partner Program fueled byZooniverseCitizen Scientists. Volunteers found 2018 OR with a long, diffuse tail in archival images from the Dark Energy Camera on the Blanco 4 m telescope at the Cerro Tololo Inter-American Observatory in Chile. Our team identified additional Canada–France–Hawaii–Telescope MegaCam and Zwicky Transient Facility archival data after classification by Citizen Scientists. Activity originating from 2018 OR and directed in the anti-solar and anti-velocity directions was visible in archival images between UT 2018 September 5–18. Our dynamical simulations indicate 2018 OR experiences close encounters with Jupiter over hundred-year timescales. The orbital period and dynamics suggest 2018 OR is a Jupiter Family Comet, and we recommend further observations from the community to reduce observational uncertainties and investigate activity patterns.