Good Acta Astronautica, Volume 229, April:
Fantino, E. Flores, R. Donnarumma, G. et al. Direct low-energy trajectories to Near-Earth Objects Page 333
Kakavand, M. Zhu, Z. H. Geometric mechanics framework for tethered de-spinning of massive asteroids by small tug using passivity-based control Page 406
Liu, Y. Thompson, M. Apirana, Steven F.T. et al. Emission spectroscopy and surface temperature analysis from Hayabusa2 sample return observation Page 498
Elmer, J.W. Bellino, J.S. Induction melting, casting, and weldability of a group IAB iron meteorite Page 578
Ma, Y. Pan, B. Tan, Q. Neural convex optimization for real-time trajectory generation of asteroid landings Page 606
Xie, H. Duan, F. Bernelli-Zazzera, F. Event-triggered orbital and attitude station-keeping control for near-asteroid spacecraft Page 918
Fantino et al. and Ma et al. tackle how to get to the asteroids- long-range, and short-range.
Liu, et al. instead consider which asteroids will be worthier or less worthy, relative to Ryugu- what did the Hayabusa2 instruments turn out to see, versus what we thought we were seeing? Characterizing a dot of light is not as straightforward as the rocket ride there.
And Kakavand et al., Elmer et al., and Xie et al. tackle what to do there- the dynamics of asteroid activities. Mathilde, Eros, Itokawa, Ryugu, and Bennu all had surprises; woe be he who assumes. Assumes like the Hayabusa1 lander teams, and even one of the teams for one of the Hayabusa2 landers, which failed.