LICIACube - The Light Italian Cubesat for Imaging of Asteroids In support of the NASA DART mission towards asteroid (65803) Didymos

Dotto, E.; Corte, Vincenzo Della; Amoroso, Marilena; Bertini, Ivano; Brucato, J. R.; Capannolo, Andrea; Cotugno, Biagio; Cremonese, Gabriele; Tana, Valerio Di; Gai, Igor; Ieva, S.; Impresario, Gabriele; Ivanovski, Stavro; Lavagna, Michèle; Lucchetti, Alice; Epifani, E. Mazzotta; Meneghin, Andrea; Miglioretti, Federico; Modenini, Dario; Pajola, M.; Palumbo, P.; Perna, D.; Pirrotta, Simone; Poggiali, Giovanni; Rossi, Alessandro; Simioni, Emanuele; Simonetti, Simone; Tortora, Paolo; Zannoni, Marco; Zanotti, Giovanni; Zinzi, A.; Cheng, A. F.; Rivkin, Andrew S.; Adams, Elena; Reynolds, E.; Fretz, Kristin

doi:10.1016/j.pss.2021.105185

Cited by 87 publications

(86 citation statements)

References 60 publications

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“…The change in orbit period will be measured from ground-based observations in order to calculate the total momentum transferred to the Didymos system. The groundbased observations will be combined with data from LICIA-Cube, a CubeSat carried by DART that will jettison just before impact and observe the collision up close (Dotto et al 2021). DART will be followed by Hera, ESA's contribution to AIDA launching in 2024.…”

Section: Introductionmentioning

confidence: 99%

Libration-induced Orbit Period Variations Following the DART Impact

et al. 2021

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The Double Asteroid Redirection Test (DART) mission will be the first test of a kinetic impactor as a means of planetary defense. In late 2022, DART will collide with Dimorphos, the secondary in the Didymos binary asteroid system. The impact will cause a momentum transfer from the spacecraft to the binary asteroid, changing the orbit period of Dimorphos and forcing it to librate in its orbit. Owing to the coupled dynamics in binary asteroid systems, the orbit and libration state of Dimorphos are intertwined. Thus, as the secondary librates, it also experiences fluctuations in its orbit period. These variations in the orbit period are dependent on the magnitude of the impact perturbation, as well as the system’s state at impact and the moments of inertia of the secondary. In general, any binary asteroid system whose secondary is librating will have a nonconstant orbit period on account of the secondary’s fluctuating spin rate. The orbit period variations are typically driven by two modes: a long period and a short period, each with significant amplitudes on the order of tens of seconds to several minutes. The fluctuating orbit period offers both a challenge and an opportunity in the context of the DART mission. Orbit period oscillations will make determining the post-impact orbit period more difficult but can also provide information about the system’s libration state and the DART impact.

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Section: Introductionmentioning

confidence: 99%

Libration-induced Orbit Period Variations Following the DART Impact

et al. 2021

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“…From Figure 13, we estimate a surface displacement of only a few cm at r ≈ R cr . LICIACube will have a flyby distance of 55 km, and its imagery should have a resolution at closest approach of 1.4 m pixel −1 (Dotto et al, 2021). Boulder displacements in the seismic pulse itself are a few cm large at r = R cr and so would be about two orders of magnitude out of reach of LICIACube's imaging.…”

Section: The Pulse Excited By the Dart Impact On Dimorphosmentioning

confidence: 99%

“…DART will be the first high-speed impact experiment on an asteroid at a scale relevant for planetary defense. Imaging during the impact will be carried out by the accompanying 6U CubeSat named the Light Italian CubeSat for Imaging of Asteroids (also known as LICIACube; Dotto et al 2021).…”

Section: Introductionmentioning

confidence: 99%

Propagation and attenuation of pulses driven by low velocity normal impacts in granular media

Quillen,

Neiderbach,

Suo

et al. 2022

Preprint

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We carry out experiments of low velocity normal impacts into granular materials that fill an approximately cylindrical 11 gallon tub. Motions in the granular medium are tracked with an array of 7 embedded accelerometers. Longitudinal pulses excited by the impact broaden and attenuate as a function of travel distance from the site of impact. Pulse propagation is not spherically symmetric about the site of impact. Peak amplitudes are about twice as large for the pulse propagating downward than at 45 degrees from vertical. An advection-diffusion model is used to estimate the dependence of pulse properties as a function of travel distance from the site of impact. The power law forms for pulse peak pressure, velocity and seismic energy depend on distance from impact to a power of -2.5 and this rapid decay is approximately consistent with our experimental measurements. Our experiments support a seismic jolt model, giving rapid attenuation of impact generated seismic energy into rubble asteroids, rather than a reverberation model, where seismic energy slowly decays. We apply our diffusive model to estimate physical properties of the seismic pulse that will be excited by the forthcoming DART mission impact onto the secondary, Dimorphos, of the asteroid binary (65803) Didymos system. We estimate that the pulse peak acceleration will exceed the surface gravity as it travels through the asteroid.

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“…Light Italian Cubesat for Imaging of Asteroids (LICIACube) mission [189], [190] will be part of the DART mission. The LICIACube instrument is composed by LEIA (Liciacube Explorer Imaging for Asteroid), a narrow FoV camera, and LUKE (Liciacube Unit Key Explorer), a wide FoV imager with an RGB Bayer pattern filter, that will collect and transmit to Earth several unique images of the effects of the DART impact on the asteroid, such as the formation and the development of the plume potentially determined by the impact [189].…”

Section: Asteroid Impact and Deflection Assessment (Aida) Missionmentioning

confidence: 99%

Optical Imaging Instruments and Main Science Results of Small Body Exploration: A Review

Fan

2021

IEEE Access

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Compared with planets and their moons, small bodies retain the characteristics of their early formation. Therefore small bodies, especially Near Earth Asteroids (NEA), have become one of the most valuable targets in space exploration. This paper presents a review of the current status of small body exploration, including the science objectives, main optical imaging instruments and the main scientific results obtained from the relevant exploration missions in the past two decades. Then, it outlines and discusses future missions to small bodies by different space agencies, including those already planned and under development. Finally, it discusses the trend of optical imaging instrument development for exploring small bodies.INDEX TERMS Small bodies, comet, asteroid, dwarf planet, optical imaging instrument.

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LICIACube - The Light Italian Cubesat for Imaging of Asteroids In support of the NASA DART mission towards asteroid (65803) Didymos

Cited by 87 publications

References 60 publications

Libration-induced Orbit Period Variations Following the DART Impact

Libration-induced Orbit Period Variations Following the DART Impact

Propagation and attenuation of pulses driven by low velocity normal impacts in granular media

Optical Imaging Instruments and Main Science Results of Small Body Exploration: A Review

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