Results 81 to 90 of about 15,403 (216)

Asymmetric Crater Relaxation on an Ice‐Rich Ceres Driven by Insolation

Journal of Geophysical Research: Planets, Volume 131, Issue 3, March 2026.
Abstract Ceres has a high ice content within its crust and is the closest dwarf planet to the sun. The resultant high insolation levels at Ceres' surface (in comparison to the outer solar system) leads to high variations in surface temperature, which is dependent on both latitude and orientation of the slope (i.e., equatorward‐ or poleward‐facing).
I. F. Pamerleau, M. M. Sori, J. E. C. Scully   +2 more
wiley   +1 more source

Reconstructing the size distribution of the primordial Main Belt

, 2017
In this work we aim to constrain the slope of the size distribution of main-belt asteroids, at their primordial state. To do so we turn out attention to the part of the main asteroid belt between 2.82 and 2.96~AU, the so-called "pristine zone", which has
Delbo, Marco, Morbidelli, Alessandro, Tsiganis, Kleomenis, Tsirvoulis, Georgios   +3 more
core   +3 more sources

Al‐Khadhaf: The first camera‐observed (H5–6) meteorite fall from Oman

Meteoritics &Planetary Science, Volume 61, Issue 3, Page 522-547, March 2026.
Abstract A fireball camera system installed in 2022 by the Oman Meteorite Monitoring Project (OMMP) as part of the Global Fireball Observatory (GFO) recorded a 3.2 s fireball on March 8, 2022 at 8:15 p.m. UTC. A meteoroid of 4 ± 2 kg entered the atmosphere at 14.0 km/s.
Anna Zappatini, Edwin Gnos, Beda A. Hofmann, Urs Eggenberger, Pascal M. Kruttasch, Frank Gfeller, Mohammad Tauseef, Ingo Leya, Hadrien A. R. Devillepoix, Eleanor K. Sansom, Martin Cupák, Sophie E. Deam, Thomas W. C. Stevenson, Peter Jenniskens, Sebastian Lindemann, Beat Booz, Muati. S. Al‐Muati, Abdulmunaim A. Al‐Zakwani, Hussain A. Al‐Ghafri   +18 more
wiley   +1 more source

Insights on the Rotational State and Shape of Asteroid (203) Pompeja from TESS Photometry

The Planetary Science Journal
The Main Belt asteroid (203) Pompeja shows evidence of extreme variability in visible and near-infrared spectral slope with time. The observed spectral variability has been hypothesized to be attributed to spatial variations across Pompeja’s surface.
Oriel A. Humes, Josef Hanuš
doaj   +1 more source

Science rationale for an initial asteroid-dedicated mission [PDF]

Spacecraft observations of asteroids involve rendezvous or orbit with several main belt asteroids.
Fanale, F. P.
core   +1 more source

Effect of rotational disruption on the size-frequency distribution of the Main Belt asteroid population

, 2014
The size distribution of small asteroids in the Main Belt is assumed to be determined by an equilibrium between the creation of new bodies out of the impact debris of larger asteroids and the destruction of small asteroids by collisions with smaller ...
Davis, Donald R., Jacobson, Seth A., Marzari, Francesco, Rossi, Alessandro, Scheeres, Daniel J.   +4 more
core   +1 more source

Disintegration and Skipping Dynamics of Bilobate‐Shaped Meteoroids for Generating Ultra‐Long Strewn Fields

Earth and Space Science, Volume 13, Issue 2, February 2026.
Abstract The longest known Aletai meteorite belt presents a unique phenomenon in meteoroid dynamics. To investigate its formation mechanism, this study introduces a bilobate‐shaped meteoroid model, emphasizing aerodynamic interactions and structure evolution.
Haoyu Li, Ziwen Li, Qingbo Gan, Xiangyuan Zeng   +3 more
wiley   +1 more source

Weak S-type asteroids compared to C-type explain the observed size distribution of the main belt

Astronomy & Astrophysics
The main belt, the region between the orbits of Mars and Jupiter, is home to more than 1 million asteroids. These asteroids form orbital groups, (i.e., asteroid families formed by collisions) and also spectral groups (taxonomies) with different chemical ...
Vávra M., Brož M.
doaj   +1 more source

Microimaging Spectroscopy of Carbonaceous Chondrites and Comparison to the Spectral Diversity of Asteroids

Journal of Geophysical Research: Planets, Volume 131, Issue 2, February 2026.
Abstract Primitive asteroids and carbonaceous chondrites (CCs) record the history of processes in the early solar system. Visible and shortwave infrared (VSWIR) spectroscopy of primitive asteroids and bulk‐powdered CCs has identified shared spectral features suggestive of shared parent body origins.
S. A. Parra, R. N. Greenberger, B. L. Ehlmann   +2 more
wiley   +1 more source

Lucy L′Ralph In-flight Calibration and Results at (152830) Dinkinesh

The Planetary Science Journal
The L’Ralph instrument is a key component of NASA’s Lucy mission, intended to provide spectral image data of multiple Jupiter Trojans. The instrument operates from ∼0.35 to 4 μ m using two focal plane assemblies: a 350–950 nm multispectral imager, Multi ...
Amy A. Simon, Hannah H. Kaplan, Dennis C. Reuter, Matthew Montanaro, William M. Grundy, Allen W. Lunsford, Gerald E. Weigle, Richard P. Binzel, Joshua Emery, Jessica Sunshine, Carly Howett, Harold F. Levison, Simone Marchi, Keith S. Noll, John Spencer   +14 more
doaj   +1 more source