Results 21 to 30 of about 1,071 (195)
Imbalanced classification applied to asteroid resonant dynamics
Frontiers in Astronomy and Space Sciences, 2023 Introduction: Machine learning (ML) applications for studying asteroid resonant dynamics are a relatively new field of study. Results from several different approaches are currently available for asteroids interacting with the z2, z1, M1:2, and ν6 ...
V. Carruba +5 more
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Dynamics of rotationally fissioned asteroids: Source of observed small asteroid systems [PDF]
Icarus, 2011 We present a model of near-Earth asteroid (NEA) rotational fission and ensuing dynamics that describes the creation of synchronous binaries and all other observed NEA systems including: doubly synchronous binaries, high- e binaries, ternary systems, and contact binaries. Our model only presupposes the Yarkovsky-O'Keefe-Radzievskii-Paddack (YORP) effect,
Jacobson, Seth A, Scheeres, Daniel J
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MathematicsThe main motivation of this research is the semi-analytical exploration of the dynamics of an asteroid that is attacked while approaching a planet (with an inelastic collision of the projectile normally to the surface of the asteroid occurring just ...
Sergey Ershkov
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An Efficient Numerical Approach to Modeling the Effects of Particle Shape on Rubble-pile Dynamics
The Planetary Science Journal, 2023 We present an approach for the inclusion of nonspherical constituents in high-resolution N -body discrete element method (DEM) simulations. We use aggregates composed of bonded spheres to model nonspherical components.
Julian C. Marohnic +4 more
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(523599) 2003 RM: The Asteroid that Wanted to be a Comet
The Planetary Science Journal, 2023 We report a statistically significant detection of nongravitational acceleration on the subkilometer near-Earth asteroid (523599) 2003 RM. Due to its orbit, 2003 RM experiences favorable observing apparitions every 5 yr.
Davide Farnocchia +13 more
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Identification and Dynamical Properties of Asteroid Families [PDF]
, 2015 Asteroids formed in a dynamically quiescent disk but their orbits became gravitationally stirred enough by Jupiter to lead to high-speed collisions. As a result, many dozen large asteroids have been disrupted by impacts over the age of the Solar System, producing groups of fragments known as asteroid families.
Nesvorný, David +2 more
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Advanced Materials, EarlyView.A 3D‐printable dual‐mode radiation shielding material is introduced by combining boron nitride nanotubes and single‐walled carbon nanotubes in a stretchable PDMS matrix. The complementary nanotube network enables simultaneous attenuation of electromagnetic interference and neutron radiation while maintaining lightweight, mechanical resilience, and ...
Flandy +12 more
wiley +1 more source
Advanced Materials, EarlyView.All‐perovskite tandem solar cells are evaluated under low‐intensity and low‐temperature (LILT) conditions relevant to space environments. Distinct loss regimes emerge, where weaker entropic mixing causes halide segragation below ≈240 K going along with a strong current imbalance, while poor electron transport in C60 dominates.
Sercan Ozen +10 more
wiley +1 more source
On the Fate of Slow Boulders Ejected after DART Impact on Dimorphos
The Planetary Science JournalOn 2022 September 26 23:14 UT, the NASA Double Asteroid Redirection Test spacecraft successfully impacted Dimorphos, the secondary component of the binary (65803) Didymos system, demonstrating asteroid orbit deflection for the first time.
Fernando Moreno +2 more
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Stereophotoclinometry for OSIRIS-REx Spacecraft Navigation
The Planetary Science Journal, 2023 We summarize a decade of effort by the Origins, Spectral Interpretation, Resource Identification, and Security–Regolith Explorer (OSIRIS-REx) mission team to build up the unique capabilities, processes, and procedures required to accomplish the ...
Coralie D. Adam +20 more
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