Results 21 to 30 of about 18,734 (209)
Olivine-rich achondrites from Vesta and the missing mantle problem
Nature Communications, 2021 Ultramafic olivine-rich achondrites provide insight into the missing mantle problem in the asteroid belt. The petrology and geochemistry of these samples suggests they are related to Vesta or the Vestoids.
Zoltan Vaci +9 more
doaj +1 more source
On Stable Chaos in The Asteroid Belt [PDF]
International Astronomical Union Colloquium, 1999 AbstractThe twenty most chaotic objects found among first hundred of numbered asteroids are studied. Lyapunov time calculated with and without inner planets indicates that for eleven of those asteroids the strongest chaotic effect results from the resonances with Mars.
openaire +1 more source
On the origin of the Almahata-Sitta meteorite and 2008TC3 asteroid [PDF]
, 2012 Asteroid 2008TC3 was a Near Earth Asteroid that impacted the Earth on 2008 October 7. Meteorites were produced by the break-up of 2008TC3 in the high atmosphere and at present, about 600 meteorites - called Almahata Sitta - coming from 2008TC3 have been ...
Alessandro Morbidelli +53 more
core +2 more sources
Survey of secular resonances in the asteroid belt [PDF]
Serbian Astronomical Journal, 2022 Using a recently introduced synthetic method to compute the asteroid secular frequencies (Knežević and Milani 2019), in this paper we survey the locations of secular resonances in the 9 dynamically distinct zones of the asteroid belt.
Knežević Z.
doaj +1 more source
Organic matter and water from asteroid Itokawa
Scientific Reports, 2021 Understanding the true nature of extra-terrestrial water and organic matter that were present at the birth of our solar system, and their subsequent evolution, necessitates the study of pristine astromaterials.
Q. H. S. Chan +11 more
doaj +1 more source
A ring as a model of the main belt in planetary ephemerides [PDF]
, 2010 We assess the ability of a solid ring to model a global perturbation induced by several thousands of main-belt asteroids. The ring is first studied in an analytical framework that provides an estimate of all the ring's parameters excepting mass.
A. Fienga +12 more
core +3 more sources
Planets in the asteroid belt [PDF]
Meteoritics & Planetary Science, 2001 Abstract— The main asteroid belt has lost >99.9% of its solid mass since the time at which the planets were forming, according to models for the protoplanetary nebula. Here we show that the primordial asteroid belt could have been cleared efficiently if much of the original mass accreted to form planetsized bodies, which were capable of perturbing ...
J. E. CHAMBERS, G. W. WETHERILL
openaire +1 more source
The origin of planetary impactors in the inner solar system [PDF]
, 2005 New insights into the history of the inner solar system are derived from the impact cratering record of the Moon, Mars, Venus and Mercury, and from the size distributions of asteroid populations. Old craters from a unique period of heavy bombardment that
Ito, Takashi +4 more
core +3 more sources
Ryugu’s Anhydrous Ingredients and Their Spectral Link to Primitive Dust from the Outer Solar System
The Astrophysical Journal Letters, 2023 Ryugu is a second-generation C-type asteroid formed by the reassembly of fragments of a previous larger body in the main asteroid belt. While the majority of Ryugu samples returned by Hayabusa2 are composed of a lithology dominated by aqueously altered ...
R. Brunetto +39 more
doaj +1 more source
The Astronomical Journal, 2023 Studying small near-Earth asteroids is important in order to understand their dynamical histories and origins as well as to mitigate the damage caused by asteroid impacts on Earth.
Jin Beniyama +12 more
doaj +1 more source