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From the entire dataset of comets observed by NEOWISE, we have analyzed 11different Halley-Type Comets (HTCs) for dust production rates, CO+CO2production rates, and nucleus sizes. Incorporating HTCs from previous studiesand multiple comet visits we have a total of 21 stacked visits, 13 of which areactive and 8 for which we calculated upper limits of production. We determinedthe nucleus sizes of 27P, P/2006 HR30, P/2012 NJ, and C/2016 S1. Furthermore,we analyzed the relationships between dust production and heliocentricdistance, and gas production and heliocentric distance. We concluded that forthis population of HTCs, ranging in heliocentric distance from 1.21 AU to 2.66AU, there was no significant correlation between dust production andheliocentric distance, nor gas production and heliocentric distance.

Behavioral Characteristics and CO+CO2 Production Rates of Halley-Type Comets Observed by NEOWISE