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Morphological mapping is a fundamental step in studying the processes that shaped an asteroid surface. Yet, it is challenging and often requires multiple independent assessments by trained experts. Here, we present fast methods to detect…

The impact of the Double Asteroid Redirection Test (DART) spacecraft with Dimorphos allows us to study asteroid collision physics, including momentum transfer, the ejecta properties, and the visibility of such events in the Solar System. We…

On 26 September 2022, the NASA Double Asteroid Redirection Test (DART) spacecraft impacted Dimorphos, the secondary component of the binary asteroid (65803)~Didymos. This experiment tested the Kinetic Impactor technology for diverting…

Earth and Planetary Astrophysics · Physics 2026-01-09 Josef Durech , Petr Pravec , Masatoshi Hirabayashi , Derek C. Richardson , Harrison Agrusa , Ryota Nakano

NASA sent the DART (Double Asteroid Redirection Test) mission to impact Dimorphos, the satellite of the asteroid binary system (65803) Didymos. DART will release LICIACube prior to impact to obtain high-resolution post-impact images. The…

Earth and Planetary Astrophysics · Physics 2022-11-30 Gonzalo Tancredi , Po-Yen Liu , Adriano Campo-Bagatin , Fernando Moreno , Bruno Domínguez

The NASA's Double-Asteroid Redirection Test (DART) was a unique planetary defence and technology test mission, the first of its kind. The main spacecraft of the DART mission impacted the target asteroid Dimorphos, a small moon orbiting…

On 2022 September 26th, 23:14 UT the NASA/DART (Double Asteroid Redirection Test) spacecraft successfully impacted Dimorphos, the secondary component of the binary (65803) Didymos system, demonstrating asteroid orbit deflection for the…

Earth and Planetary Astrophysics · Physics 2024-02-07 Fernando Moreno , Gonzalo Tancredi , Adriano Campo Bagatin

In 2022 the DART mission spacecraft impacted the asteroid Dimorphos, the secondary body of the binary Didymos system, ejecting a large number of dust particles, rocks and boulders. The ESA Hera mission will reach the system in 2026 for…

Earth and Planetary Astrophysics · Physics 2024-02-08 Krzysztof Langner , Francesco Marzari , Alessandro Rossi , Giovanni Zanotti

The Near-Earth binary asteroid Didymos was the target of a planetary defense demonstration mission DART in September 2022. The smaller binary component, Dimorphos, was impacted by the spacecraft in order to measure momentum transfer in…

The DART spacecraft will impact Didymos's secondary, Dimorphos, at the end of 2022 and cause a change in the orbital period of the secondary. For simplicity, most previous numerical simulations of the impact used a spherical projectile…

Earth and Planetary Astrophysics · Physics 2022-01-06 S. D. Raducan , M. Jutzi , T. M. Davison , M. E. DeCoster , D. M. Graninger , J. M. Owen , A. M. Stickle , G. S. Collins

ESA's Hera mission aims to visit binary asteroid Didymos in late 2026, investigating its physical characteristics and the result of NASA's impact by the DART spacecraft in more detail. Two CubeSats on-board Hera plan to perform a ballistic…

Instrumentation and Methods for Astrophysics · Physics 2023-11-01 Iosto Fodde , Jinglang Feng , Massimiliano Vasile , Jesús Gil-Fernández

Asteroid collisions are one of the main processes responsible for the evolution of bodies in the main belt. Using observations of the Dimorphos impact by the DART spacecraft, we estimate how asteroid collisions in the main belt may look in…

Earth and Planetary Astrophysics · Physics 2024-03-07 E. O. Ofek , D. Polishook , D. Kushnir , G. Nir , S. Ben-Ami , Y. Shvartzvald , N. L. Strotjohann , E. Segre , A. Blumenzweig , M. Engel , D. Bodewits , J. W. Noonan

We report observations of the Didymos-Dimorphos binary asteroid system using the Atacama Large Millimeter/Submillimeter Array (ALMA) and the Atacama Compact Array (ACA) in support of the Double Asteroid Redirection Test (DART) mission. Our…

Previous efforts have modeled the Didymos system as two irregularly shaped rigid bodies, although it is likely that one or both components are in fact rubble piles. Here, we relax the rigid-body assumption to quantify how this affects the…

Earth and Planetary Astrophysics · Physics 2022-07-15 Harrison F. Agrusa , Fabio Ferrari , Yun Zhang , Derek C. Richardson , Patrick Michel

Asteroids have called the attention of researchers around the world. Its chemical and physical composition can give us important information about the formation of our Solar System. In addition, the hypothesis of mining some of these…

Earth and Planetary Astrophysics · Physics 2023-07-18 Bruno Chagas , Antonio F. B. de A. Prado , Othon C. Winter

NASA's DART and ESA's Hera missions offer a unique opportunity to investigate the delivery of impact ejecta to other celestial bodies. We performed ejecta dynamical simulations using 3 million particles categorized into three size…

Earth and Planetary Astrophysics · Physics 2024-09-02 Eloy Peña-Asensio , Michael Küppers , Josep M. Trigo-Rodríguez , Albert Rimola

On September 26, 2022, NASA's DART spacecraft impacted Dimorphos, the secondary asteroid in the (65803) Didymos system, so that the efficiency with which a satellite could divert an asteroid could be measured from the change in the system's…

Earth and Planetary Astrophysics · Physics 2023-08-31 Taylor Gudebski , Elisabeth Heldridge , Brady McGawn , Elle O Hill , Jonathan J. Swift , Henry Zhou

We present a series of numerical simulations using a shock physics smoothed particle hydrodynamics (SPH) code, investigating energetic impacts on small celestial bodies characterised by diverse internal structures, ranging from weak and…

Earth and Planetary Astrophysics · Physics 2024-04-19 S. D. Raducan , M. Jutzi , C. C. Merrill , P. Michel , Y. Zhang , M. Hirabayashi , A. Mainzer