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Note, Paper: Impacts, Done and Coming

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Always the possibility of last minute additions, but… wow, what an Astronomy & Astrophysics for March (vol. 695) (so far):

Borovička, J. Spurný, P. Kotková, L.  et al.  The structure of κ Cygnid and August Draconid meteoroid streams  A83   202453552
Fatka, P. Pravec, P. Scheirich, P. et al.  Spins and shapes of 11 near-Earth asteroids observed within the NEOROCKS project  A139    202450027
Le Pivert-Jolivet, T. Brunetto, R. Pilorget, C.  et al.  Water in Ryugu as a property of processes in its parent body  A168   202453270
Koten, P. Čapek, D. Tóth, J. et al.  A very young τ-Herculid meteor cluster observed during a 2022 shower outburst  A189    202553764
Fenucci, M. Novaković, B. Zhang, P. et al.  Astrometry, orbit determination, and thermal inertia of the Tianwen-2 target asteroid (469219) Kamo‘oalewa  A196   202453222
Chavan, P. Yang, B. Brož, M. et al.  Near-infrared spectroscopic characterization of the Pallas family A254  202453489
Maté, B. Peláez, R. J. Molpeceres, G.  et al.  Hydroxylamine in astrophysical ices: Infrared spectra and cosmic-ray-induced radiolytic chemistry  A102   202453312
Fodde, I.  Ferrari, F.  Dynamical modelling of rubble pile asteroids using data-driven techniques  A30  202452432

Water in Ryugu, and possibly Pallas (and family). Said.

Meteors- even meteor showers- are unsung stepchildren. They tell us of comets (and some active asteroids), but there’s little substance to follow up on besides a light show, so what to do?

Asteroids give us something to characterize. Even on a dot of light, we can deduce rotation (via periodicity), an initial shape (via the changes with periodicity), and some initial material characterization (via spectroscopy, including comparison with each other and with meteorites). And should we lack meteorites (due to ice loss), laboratory astronomy includes making asteroid surrogates in vitro. Maté et al. study ice properties and processes using these proxies.

And should that be too limiting, we can study asteroids in silico. Itokawa, Ryugu, and Bennu (plus Mathilde to an extent) gave use signs of microgravity physics at poorly-cohered, aggregate bodies. Within these bounds, we can try to replicate what we saw numerically, as Fodde Ferrari have.

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