Results 91 to 100 of about 218,932 (203)

Considering Contact Forces during the Formation of Planetesimals by Gravitational Collapse: Mutual Orbits, Spin States, and Shapes

open access: yesThe Astrophysical Journal
In this work, we apply a soft-sphere discrete element method (SSDEM) within the PKDGRAV N -body integrator to investigate the formation of planetesimal systems through the gravitational collapse of clouds of superparticles. Previously published numerical
Jackson T. Barnes   +2 more
doaj   +1 more source

Accretion and Uneven Depletion of the Main Asteroid Belt

open access: yesThe Planetary Science Journal
The main asteroid belt (MAB) is known to be primarily composed of objects from two distinct taxonomic classes, generically defined here as S- and C-complex.
Rogerio Deienno   +5 more
doaj   +1 more source

Active Asteroids: Main-Belt Comets and Disrupted Asteroids [PDF]

open access: yesProceedings of the International Astronomical Union, 2015
AbstractThe study of active asteroids has attracted a great deal of interest in recent years since the recognition of main-belt comets (which orbit in the main asteroid belt, but exhibit comet-like activity due to the sublimation of volatile ices) as a new class of comets in 2006, and the discovery of the first disrupted asteroids (which, unlike MBCs ...
openaire   +2 more sources

A Census before Rubin of Asteroid Families in the Main Belt

open access: yesThe Astrophysical Journal Supplement Series
A collisional family is a collection of ≳kilometer-size asteroid fragments produced by a large-scale collision between asteroids. Here we cataloged 335 notable collisional families in the main asteroid belt.
David Nesvorný
doaj   +1 more source

Pole and shape of (1459) Magnya, the outer main belt basaltic asteroid

open access: yes, 2015
Context. The basaltic asteroid (1459) Magnya is, to date, the only confirmed example of this kind of asteroid in the outer main belt (Lazzaro et al ...
D. Lazzaro, J. S. Silva
core   +1 more source

A Pre-flyby View on the Origin of Asteroid Donaldjohanson, a Target of the NASA Lucy Mission

open access: yesThe Planetary Science Journal
The NASA Lucy mission is scheduled to fly by the main-belt asteroid (52246) Donaldjohanson on 2025 April 20. Donaldjohanson (DJ hereafter) is a member of the primitive (C-type class) Erigone collisional asteroid family located in the inner main belt in ...
Simone Marchi   +5 more
doaj   +1 more source

Asteroid Belt Survival through Stellar Evolution: Dependence on the Stellar Mass

open access: yes, 2020
Polluted white dwarfs are generally accreting terrestrial-like material that may originate from a debris belt like the asteroid belt in the Solar system. ...
Livio, Mario   +3 more
core   +1 more source

2020 BX12—The Last Binary Asteroid Discovered at Arecibo

open access: yesThe Planetary Science Journal
Radar observations of 2020 BX _12 conducted with the S -band planetary radar system (2380 MHz, 12.6 cm) at the Arecibo Observatory on 2020 February 4 and 5 revealed that this potentially hazardous asteroid is a binary system.
Luisa Fernanda Zambrano-Marin   +7 more
doaj   +1 more source

The Role of Families in Determining Collision Probability in the Asteroid Main Belt

open access: yes, 2001
Asteroid families represent the outcomes of major collisional events in the asteroid Main Belt. These events produced in some cases huge numbers of fragments, down to sizes of at least 1 km in diameter. In this paper we show that these families produce a
Cellino A.   +5 more
core   +1 more source

Search for Near-Earth Asteroid Pair Candidates Based on Orbital Evolution Analysis

open access: yesThe Astrophysical Journal
Asteroid pairs refer to pairs of bodies that exhibit a high degree of similarity in orbital element space but are not gravitationally bound dynamically.
Ning Liu   +5 more
doaj   +1 more source

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