Results 31 to 40 of about 85,468 (250)
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
doaj +1 more source
Dynamics of asteroid systems post-rotational fission
Astronomy & Astrophysics, 2022 Asteroid binaries found among the near-Earth objects are believed to have formed from rotational fission. In this paper, we study the dynamical evolution of asteroid systems the moment after fission. The model considers two bodies the moment after a contact binary separates due to rotational fission.
Alex Ho +3 more
openaire +3 more sources
Asteroid Deflection by Leveraging Rotational Self-Energy [PDF]
Journal of Spacecraft and Rockets, 2021 A novel concept for the deflection of rotating asteroids is presented, based on the conversion of the asteroid rotational kinetic energy into translational kinetic energy. Such conversion is achieved using an orbital siphon, a tether-connected chain of masses, arranged vertically from the asteroid surface, which exploits the rotation of the asteroid ...
Viale, Andrea +3 more
openaire +2 more sources
Rotation Periods of Asteroids Determined With Bootstrap Convex Inversion From ATLAS Photometry
Frontiers in Astronomy and Space Sciences, 2022 The rotation period is one of the fundamental physical characteristics of asteroids. It can be determined from photometric measurements by standard methods of time-series period analysis or by creating a physical model of an asteroid with the rotation ...
Josef Ďurech +3 more
doaj +1 more source
Dynamics of rotationally fissioned asteroids: Source of observed small asteroid systems [PDF]
Icarus, Volume 214, Issue 1, p. 161-178. (2011), 2014 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,
arxiv +1 more source
Asteroid models reconstructed from ATLAS photometry [PDF]
A&A 643, A59 (2020), 2020 The Asteroid Terrestrial-impact Last Alert System (ATLAS) is an all-sky survey primarily aimed at detecting potentially hazardous near-Earth asteroids. Apart from the astrometry of asteroids, it also produces their photometric measurements that contain information about asteroid rotation and their shape. To increase the current number of asteroids with
arxiv +1 more source
Determination of 1929 Asteroid Rotation Periods from WISE Data
The Planetary Science Journal, 2023 We used 22 μ m (W4) Wide-field Infrared Survey Explorer (WISE) observations of 4420 asteroids to analyze lightcurves, and determined spin period estimates for 1929 asteroids.
Adrian L. H. Lam +3 more
doaj +1 more source
Universe, 2023 The Neil–Gehrels Swift Observatory has added extensively to our understanding of small bodies in our solar system through its capabilities to rapidly respond to short-live events such as outbursts and collisions, through its near-ultraviolet coverage ...
Dennis Bodewits +3 more
doaj +1 more source
A Comprehensive Comparison of Period Extraction Algorithms for Asteroids with Long Term Observation
Universe, 2021 The light curve period of an asteroid plays an important role in determining the rotation period, the collision evolution and the YORP effect. There are many period extraction algorithms used to find the light curve period of asteroids with long term ...
Yang Liu +6 more
doaj +1 more source
Non-Vestoid candidate asteroids in the inner main belt [PDF]
Astronomy & Astrophysics December 16, 2016, 2016 Most Howardite-Eucrite-Diogenite (HED) meteorites (analogs to V-type asteroids) are thought to originate from asteroid (4) Vesta. However, some HEDs show distinct oxygen isotope ratios and therefore are thought to originate from other asteroids. In this study, we try to identify asteroids that may represent parent bodies of those mismatching HEDs.
arxiv +1 more source