Results 91 to 100 of about 7,841,985 (153)

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

open access: yesThe 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   +8 more
doaj   +1 more source

Numerical simulations suggest asteroids (101955) Bennu and (162173) Ryugu are likely second or later generation rubble piles

open access: yesNature Communications
Rubble pile asteroids are widely understood to be composed of reaccumulated debris following a catastrophic collision between asteroids in the main asteroid belt, where each disruption can make a family of new asteroids.
K. J. Walsh   +14 more
doaj   +1 more source

Photometry and Models of Seven Main-Belt Asteroids

open access: yesUniverse
The China Near-Earth Object Survey Telescope (CNEOST) conducted four photometric surveys from 2015 to 2018 using image processing and aperture photometry techniques to obtain extensive light curve data on asteroids. The second-order Fourier series method
Jun Tian   +6 more
doaj   +1 more source

The distribution of mantle material among main-belt asteroids

open access: yes, 2014
International audienceWe expect there to have been many bodies in the Main Asteroid Belt (MB) sufficiently heated at the time of solar system formation to allow their interiors to differentiate into an iron core and silicate-rich crust and mantle ...
Demeo, Francesca E.   +5 more
core   +4 more sources

Identifying LL Chondrite Near-Earth Asteroids Using LL Chondrite Reflectance Spectra

open access: yesThe Astrophysical Journal Letters
Most near-Earth objects are thought to originate from the collisional fragments of the main asteroid belt. One question that remains to be resolved is the proportion of near-Earth objects sampling the core area material of the parent body to the outer ...
Pengyue Wang   +3 more
doaj   +1 more source

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

open access: yesOpen 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.   +2 more
doaj   +1 more source

The Origin and Evolution of the Asteroid Main Belt

open access: yes, 2005
Conference proceedings for the 6th IAA International Conference on "Low-Cost Planetary Missions" held October 11-13, 2005 in Kyoto ...
Bidstrup, Philip R.   +4 more
openaire   +2 more sources

Overview of Water-Ice in Asteroids—Targets of a Revolution by LSST and JWST

open access: yesUniverse
Water-ice occurs inside many minor bodies almost throughout the Solar System. To have an overview of the inventory of water-ice in asteroids, beside the general characteristics of their activity, examples are presented with details, including the Hilda ...
Ákos Kereszturi   +5 more
doaj   +1 more source

Subaru Lightcurve Observations of Sub-km-sized Main-belt Asteroids

open access: yes, 2014
Investigations of the spin period and shape distributions for a certain asteroid group using their lightcurve observations are essential to understand collisional evolution of that group.
Tsuko Yoshida, Budi Nakamura
core  

The Lifetime of Ice on Main Belt Asteroids

open access: yesThe Astrophysical Journal, 2008
We theoretically estimate the loss rate of buried ice from spherical bodies 2-3.3 AU from the Sun. The loss rate is explored as a function of about a dozen parameters. We introduce the concept of a "buried snow line," where the loss of ice is sufficiently slow over the age of the solar system.
openaire   +1 more source

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