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Creators/Authors contains: "Frissell, Maxwell_K"

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  1. ; ; ; ; ; ; ; ; ; ; et al (, Research Notes of the AAS)
    Abstract We present the discovery of a short, diffuse tail on minor planet 2010 MK43(alternate designation 2010 RA78)—an object previously identified as an asteroid in a cometary orbit—by volunteers of our Citizen Science programActive Asteroids. Our follow-up investigation revealed eight Dark Energy Camera images showing 2010 MK43with a tail spanning UT 2024 February 12–UT 2024 February 18 when the object was outbound from perihelion. We now classify 2010 MK43as a Jupiter-family comet based on its Tisserand parameter with respect to JupiterTJ = 2.888, though our dynamical simulations reveal that, due to frequent close encounters with Jupiter, 2010 MK43was likely a quasi-Hilda within the last 10 kyr. 
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  2. ; ; ; ; ; ; ; ; ; ; et al (, Research Notes of the AAS)
    Abstract We report the discovery of cometary activity emanating from minor planet 2015 VP51outbound from its recent perihelion passage. The activity, in the form of a diffuse tail, was first identified by volunteers of our Citizen Science programActive Asteroids, a NASA Partner program hosted on theZooniverseplatform. This discovery was aided by the recently implementedTailNetartificial intelligence assistant which filters out images with a low likelihood of showing cometary activity. The tail is present in nine images of 2015 VP51from the Dark Energy Camera and OmegaCAM between UT 2015 August 2 and UT 2015 October 18. We classify 2015 VP51as a Jupiter-family comet based on its Tisserand parameter with respect to JupiterTJ = 2.931. 
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