activity
19982025
most citedRotation-Dependent Catastrophic Disruption of Gravitational Aggregates

432 citations · 2.3k across the 46 of their papers we have counts for

collaborators

47 papers

astro-ph.EP2025★ 25 cited

The Dynamical State of the Didymos System Before and After the DART Impact

Derek C. Richardson, Harrison F. Agrusa, Brent Barbee +50

NASA's Double Asteroid Redirection Test (DART) spacecraft impacted Dimorphos, the natural satellite of (65803) Didymos, on 2022 September 26, as a first successful test of kinetic…

astro-ph.EP2025★ 3 cited

Surface dynamics and geophysical environment of asteroid (3200) Phaethon

Hangbin Jo, Masateru Ishiguro, Derek C. Richardson +3

Context. (3200) Phaethon is a ~5-km-diameter near-Earth asteroid with a small perihelion distance of 0.14 au and is the parent body of the Geminids. JAXA's DESTINY+ mission will fl…

astro-ph.EP2023★ 1 cited

The Properties and Origins of Kuiper Belt Object Arrokoth's Large Mounds

S. A. Stern, O. L. White, Wm. Grundy +10

We report on a study of the mounds that dominate the appearance of Kuiper Belt Object (KBO) (486958) Arrokoth's larger lobe, named Wenu. We compare the geological context of these…

astro-ph.EP2023

The Perturbed Full Two-Body Problem: Application to Post-DART Didymos

Alex J. Meyer, Harrison F. Agrusa, Derek C. Richardson +19

With the successful impact of the NASA DART spacecraft in the Didymos-Dimorphos binary asteroid system, we provide an initial analysis of the post-impact perturbed binary asteroid…

astro-ph.EP2023★ 29 cited

Tidal resurfacing model for (99942) Apophis during the 2029 close approach with Earth

Y. Kim, J. V. DeMartini, D. C. Richardson +1

We numerically investigate tidally induced surface refreshing on Apophis during its close approach with Earth within a perigee distance of 5.96 Earth radii on April 13, 2029. We im…

astro-ph.EP2022★ 16 cited

Rotation-induced granular motion on the secondary component of binary asteroids: Application to the DART impact on Dimorphos

Harrison Agrusa, Ronald Ballouz, Alex J. Meyer +6

NASA's Double Asteroid Redirection Test (DART) mission will kinetically impact Dimorphos, the secondary component of the Didymos binary asteroid system, which will excite Dimorphos…