54 citations · 71 across the 17 of their papers we have counts for
8 papers · 1 filter
Semi-major Axis Jumps as the Activity Trigger in Centaurs and High-Perihelion Jupiter Family Comets
Eva Lilly, Peter Jevčák, Charles Schambeau +7
We present a dynamical study of 39 active Centaurs and 17 high-perihelion (q4.5 au) JFCs with a focus on investigating recent orbital changes as potential triggers for comet-lik…
Ejecta Evolution Following a Planned Impact into an Asteroid: The First Five Weeks
Theodore Kareta, Cristina Thomas, Jian-Yang Li +85
The impact of the DART spacecraft into Dimorphos, moon of the asteroid Didymos, changed Dimorphos' orbit substantially, largely from the ejection of material. We present results fr…
Improvement of digest2 NEO Classification Code -- utilizing the Astrometry Data Exchange Standard
Peter Vereš, Richard Cloete, Robert Weryk +2
We describe enhancements to the digest2 software, a short-arc orbit classifier for heliocentric orbits. Digest2 is primarily used by the Near-Earth Object (NEO) community to flag n…
ASSIST: An Ephemeris-Quality Test Particle Integrator
Matthew J. Holman, Arya Akmal, Davide Farnocchia +5
We introduce ASSIST, a software package for ephemeris-quality integrations of test particles. ASSIST is an extension of the REBOUND framework and makes use of its IAS15 integrator…
Comet P/2021 HS (PANSTARRS) and the Challenge of Detecting Low-Activity Comets
Quanzhi Ye, Michael S. P. Kelley, James M. Bauer +8
Jupiter-family comet (JFC) P/2021 HS (PANSTARRS) only exhibits a coma within a few weeks of its perihelion passage at 0.8~au, which is atypical for a comet. Here we present an inve…
Observational Characterization of Main-Belt Comet and Candidate Main-Belt Comet Nuclei
Henry H. Hsieh, Marco Micheli, Michael S. P. Kelley +9
We report observations of nine MBCs or candidate MBCs, most of which were obtained when the targets were apparently inactive. We find effective nucleus radii (assuming albedos of p…
(523599) 2003 RM: The asteroid that wanted to be a comet
Davide Farnocchia, Darryl Z. Seligman, Mikael Granvik +11
We report a statistically significant detection of nongravitational acceleration on the sub-kilometer near-Earth asteroid (523599) 2003 RM. Due to its orbit, 2003 RM experiences fa…
Dark Comets? Unexpectedly Large Nongravitational Accelerations on a Sample of Small Asteroids
Darryl Z. Seligman, Davide Farnocchia, Marco Micheli +15
We report statistically significant detections of non-radial nongravitational accelerations based on astrometric data in the photometrically inactive objects 1998 KY, 2005 V…