8 papers
Infrared-to-visible albedo ratio of Phobos: Comparison with primitive asteroids
T. J. Dyer, J. Beccarelli, M. Delbo +5
Aims. The ratio between infrared and visible albedo, pIR/pV, provides a simple proxy for the spectral slope of asteroid surfaces between the visible and near-infrared wavelength ra…
Twin Impact Lunar Telescope network: Lunar Impact Flash observations of the 2025 Geminids
Daniel Sheward, Marco Delbo, Chrysa Avdellidou +23
Meteoroid impacts on the Moon, observed from Earth as flashes typically lasting a few tens of milliseconds, have been monitored for three decades for determining meteoroids' size a…
The Nysa family as the main source of unequilibrated LL ordinary chondrites
M. Marsset, P. Vernazza, M. Brož +16
Context. The origin of the petrologic diversity observed in ordinary chondrites (OCs), the most common meteorites on Earth, remains debated. Competing models invoke either depth-de…
NSF-DOE Vera C. Rubin Observatory Observations of Interstellar Comet 3I/ATLAS (C/2025 N1)
Colin Orion Chandler, Pedro H. Bernardinelli, Mario JuriÄ +305
We report on the observation and measurement of astrometry, photometry, morphology, and activityof the interstellar object 3I/ATLAS, also designated C/2025 N1 (ATLAS) with the NSF-…
Gaia DR3 supervised classification of asteroid reflectance spectra
Marco Delbo, Thomas Dyer, Ullas Bhat +3
We present a supervised, probabilistic taxonomic classification of asteroid reflectance spectra from Gaia Data Release 3 (DR3). Using high-quality Gaia DR3 spectra and a reference…
The dependence of the asteroid rotation on their composition
T. J. Dyer, W. -H. Zhou, C. Avdellidou +4
The rotational properties of asteroids provide critical information about not only their internal structure but also their collisional and thermal histories. Previous work has reve…