Results 91 to 100 of about 15,631 (239)

A binary main belt comet

, 2017
The asteroids are primitive solar system bodies which evolve both collisionally and through disruptions due to rapid rotation [1]. These processes can lead to the formation of binary asteroids [2-4] and to the release of dust [5], both directly and, in ...
Agarwal, Jessica, Jewitt, David, Larson, Stephen, Mutchler, Max, Weaver, Harold   +4 more
core   +1 more source

Martian Impact Fracturing Pervasively Influences Habitability

Journal of Geophysical Research: Planets, Volume 129, Issue 9, September 2024.
Abstract On Mars, the lack of either plate tectonics or a prominent erosional hydrological cycle since the Noachian means geological changes caused by asteroid and comet impact events have been preserved. On Earth, surviving impact‐induced fractures are localized to the relatively few preserved craters on the planet.
C. S. Cockell, G. S. Collins, S. Basu, E. Grant, S. McMahon   +4 more
wiley   +1 more source

Satellite Formation around the Largest Asteroids

The Astrophysical Journal Letters
Satellites around large asteroids are preferentially found among those with the most rapid rotation and elongated shape. The taxonomic statistics are similarly skewed; in total, 13 asteroids larger than 100 km are known to have satellites, but none have ...
Kevin J. Walsh, Ronald-Louis Ballouz, Harrison F. Agrusa, Josef Hanus̆, Martin Jutzi, Patrick Michel   +5 more
doaj   +1 more source

Consus Crater on Ceres: Ammonium‐Enriched Brines in Exchange With Phyllosilicates?

Journal of Geophysical Research: Planets, Volume 129, Issue 9, September 2024.
Abstract Ceres is a partially differentiated dwarf planet located in the main asteroid belt. Consus crater (diameter ∼64 km) is one of the oldest impact features (∼450 Ma) on the Cerean surface that surprisingly still shows a large variety of color lithologies, including exposures of bright material, which are thought to be brine residues.
A. Nathues, M. Hoffmann, R. Sarkar, P. Singh, J. Hernandez, J. H. Pasckert, N. Schmedemann, G. Thangjam, E. Cloutis, K. Mengel, M. Coutelier   +10 more
wiley   +1 more source

Ray and Halo Impact Craters on Ganymede: Fingerprint for Decoding Ganymede's Crustal Structure

Earth and Space Science, Volume 11, Issue 9, September 2024.
Abstract Impact craters are a unique tool not only for inferring ages of planetary surfaces and examining geological processes, but also for exploring subsurface properties. We use ejecta blankets as proxies to obtain insights into the subsurface characteristics and the vertical stratification of Ganymede's icy crust.
N. R. Baby, T. Kenkmann, K. Stephan, R. J. Wagner, E. Hauber   +4 more
wiley   +1 more source

Infrared Colors of Small Serendipitously Found Asteroids in the UKIRT Hemisphere Survey

The Astronomical Journal
The UKIRT Hemisphere Survey covers the northern sky in the infrared from 0° to 60° decl. Current data releases include both J and K bands, with H -band data forthcoming. Here, we present a novel pipeline to recover asteroids from this survey data.
Samantha G. Morrison, Ryder H. Strauss, David E. Trilling, Andy J. López-Oquendo, Justice Bruursema, Frederick J. Vrba   +5 more
doaj   +1 more source

Observational Data and Orbits of the Asteroids Discovered at the Molėtai Observatory in 2005–2007

Open Astronomy, 2016
The paper presents statistics of the asteroids observed and discovered at the Molėtai Observatory, Lithuania, in 2005–2007 within the project for astrometric observations of the near-Earth objects (NEOs), the main belt asteroids and comets.
Černis K., Wlodarczyk I., Zdanavičius J.   +2 more
doaj   +1 more source

Dynamical evolution of V-type photometric candidates in the outer Main-belt

, 2014
V-type asteroids, characterized by two absorption bands at 1.0 and 2.0 $\mu m$, are usually thought to be portions of the crust of differentiated or partially differentiated bodies.
Carruba, Valerio, Domingos, Rita Cassia, Huaman, Mariela E.   +2 more
core   +1 more source

Observations and Quantitative Compositional Analysis of Ceres, Pallas, and Hygiea Using JWST/NIRSpec

The Planetary Science Journal
We present JWST Near Infrared Spectrograph (NIRSpec) measurements of the three largest low-albedo main-belt asteroids: (1) Ceres, (2) Pallas, and (10) Hygiea.
Andrew S. Rivkin, Cristina A. Thomas, Ian Wong, Bryan Holler, Helena C. Bates, Ellen S. Howell, Bethany L. Ehlmann, Stefanie N. Milam, Heidi B. Hammel   +8 more
doaj   +1 more source

Identification and Dynamical Properties of Asteroid Families

, 2015
Asteroids formed in a dynamically quiescent disk but their orbits became gravitationally stirred enough by Jupiter to lead to high-speed collisions. As a result, many dozen large asteroids have been disrupted by impacts over the age of the Solar System ...
Broz, M., Carruba, V., Nesvorny, D.
core   +1 more source