We obtained broad-and narrowband images of the hyperactive comet 46P/Wirtanen on 33
nights during its 2018/2019 apparition, when the comet made a historic close approach to …

Cometary outgassing can produce torques that change the spin state of the cometary
nucleus, which in turn influences the evolution and lifetime of the comet,. If these torques …

We report on photometry and imaging of Comet 103P/Hartley 2 obtained at Lowell
Observatory from 1991 through 2011. We acquired photoelectric photometry on two nights in …

We report on photometry and imaging of the Jupiter family comets 41P/Tuttle–Giacobini–
Kresak and 45P/Honda–Mrkos–Pajdusakova with the TRAPPIST-North (TRAnsiting Planets …

We report on our extensive photometry and imaging of comet 46P/Wirtanen during its
2018/19 apparition and use these data to constrain the modeling of Wirtanen's activity …

This paper presents long-slit spectra of H2O emission from the inner coma of Comet
103P/Hartley 2, acquired with NIRSPEC/Keck 2 during the comet's close approach to Earth …

Abstract The LCO Outbursting Objects Key (LOOK) Project uses the telescopes of the Las
Cumbres Observatory (LCO) Network to (1) systematically monitor a sample of previously …

Comet 103P/Hartley 2 has diurnally controlled, CO 2-driven activity on the tip of the small
lobe of its bilobate nucleus. Such activity is unique among the comet nuclei visited by …

We derive the spin state of the nucleus of Comet 103P/Hartley 2, its orientation in space, and
its short-term temporal evolution from a mixture of observations taken from the DIXI (Deep …

Sublimative outgassing of comets produces torques that alter the rotation state of their
nuclei. Recently, parameterized sublimative torque models have been developed to study …