Context. The classification of the minor bodies of the Solar System based on observables
has been continuously developed and iterated over the past 40 yr. While prior iterations …

Ryugu is a carbonaceous rubble-pile asteroid visited by the Hayabusa2 spacecraft. Small
rubble pile asteroids record the thermal evolution of their much larger parent bodies …

Context. The Gaia mission of the European Space Agency (ESA) has been routinely
observing Solar System objects (SSOs) since the beginning of its operations in August 2014 …

Abstract The Transient Double-beam Spectrograph (TDS) is designed for low-spectral-
resolution optical observations of nonstationary and extragalactic sources at the 2.5-m …

We successfully observed 191 near-Earth asteroids using the Arecibo Observatory's S-band
planetary radar system from 2017 December through 2019 December. We present radar …

Each type of asteroids and comets are important, serving as the unique puzzle pieces of the
solar system. The countless number of small bodies spread vastly from the near-Earth orbits …

Context. Near-Earth asteroids (NEAs) that may evolve into impactors deserve detailed threat
assessment studies. Early physical characterization of a would-be impactor may help in …

In the framework of the visible NEAs observations survey (ViNOS) that uses several
telescopes at the Canary Islands observatories since 2018, we observed two superfast …

Various natural effects gradually alter the surfaces of asteroids exposed to the space
environment. These processes are collectively known as space weathering. The influence of …

Context. Near-earth objects (NEOs), thanks to their proximity, provide a unique opportunity
to investigate asteroids with diameters down to dozens of meters. The study of NEOs is also …