Results 111 to 120 of about 21,781 (220)

Direct N-body Simulations of Satellite Formation around Small Asteroids: Insights from DART’s Encounter with the Didymos System

open access: yesThe Planetary Science Journal
We explore binary asteroid formation by spin-up and rotational disruption considering the NASA DART mission's encounter with the Didymos–Dimorphos binary, which was the first small binary visited by a spacecraft.
Harrison F. Agrusa   +20 more
doaj   +1 more source

Precise Orbit Determination of Mars-crossing Asteroids

open access: yesThe Astronomical Journal
This study investigates the orbit determination of the Mars-crossing asteroids (MCAs) with a focus on the possibility of detecting their Yarkovsky signals. We analyze the influences of force model uncertainties on MCA orbits, including the uncertainty of
Xin Liu   +6 more
doaj   +1 more source

High-speed Boulders and the Debris Field in DART Ejecta

open access: yesThe Planetary Science Journal
On 2022 September 26 the Double Asteroid Redirection Test (DART) spacecraft collided with Dimorphos, the moon of the near-Earth asteroid 65803 Didymos, in a full-scale demonstration of a kinetic impactor concept.
Tony L. Farnham   +46 more
doaj   +1 more source

Size–Frequency Distribution of Terrestrial Leftover Planetesimals and S-complex Implanted Asteroids

open access: yesThe Astrophysical Journal
The isotopic composition of meteorites linked to S-complex asteroids has been used to suggest that these asteroids originated in the terrestrial planet’s region, i.e., within 1.5 au, and later got implanted into the main asteroid belt (MAB).
Rogerio Deienno   +5 more
doaj   +1 more source

Gauss-Radau Small-body Simulator (GRSS): An Open-source Library for Planetary Defense

open access: yesThe Planetary Science Journal
We present GRSS , a small-body propagation and orbit determination library specifically designed for planetary defense applications. GRSS is an end-to-end, open-source software tool that begins with optical observations obtained from the Minor Planet ...
Rahil Makadia   +3 more
doaj   +1 more source

Achievement of the Planetary Defense Investigations of the Double Asteroid Redirection Test (DART) Mission

open access: yesThe Planetary Science Journal
NASA's Double Asteroid Redirection Test (DART) mission was the first to demonstrate asteroid deflection, and the mission's Level 1 requirements guided its planetary defense investigations. Here, we summarize DART's achievement of those requirements.
Nancy L. Chabot   +128 more
doaj   +1 more source

Dynamical development of strength and stability of asteroid material under 440 GeV proton beam irradiation. [PDF]

open access: yesNat Commun
Bochmann M   +28 more
europepmc   +1 more source

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