Results 21 to 30 of about 1,091 (163)
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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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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(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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Radar contributions to asteroid astrometry and dynamics [PDF]
CELESTIAL MECHANICS AND DYNAMICAL ASTRONOMY, 1997 Almost every radar observation of asteroids has measured some characteristics of the distribution of echo power in time delay (range) and Doppler frequency (radial velocity). Such measurements, which are orthogonal to optical plane-of-sky angular astrometry, are also done in the well-known, “absolute” reference frame of the planetary ephemerides, often
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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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Simulating the (99942) Apophis Earth Flyby Using a Contact Binary Model
The Planetary Science JournalThis paper investigates the mass shifts of asteroid (99942) Apophis during its 2029 close encounter with Earth, using the contact dynamics method, a type of discrete element method. Unlike previous analyses, we model the asteroid as a contact binary body
Hai-Shuo Wang +2 more
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Colors of dynamically associated asteroid pairs [PDF]
Icarus, 2012 22 pages, 7 figures, Accepted to ...
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The Dynamical State of the Didymos System before and after the DART Impact
The Planetary Science JournalNASA’s Double Asteroid Redirection Test (DART) spacecraft impacted Dimorphos, the natural satellite of (65803) Didymos, on 2022 September 26, as a first successful test of kinetic impactor technology for deflecting a potentially hazardous object in space.
Derek C. Richardson +52 more
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DYNAMICS AROUND AN ASTEROID MODELED AS A MASS TRIPOLE
Revista Mexicana de Astronomía y Astrofísica, 2020 The orbital dynamics of a spacecraft orbiting around irregular small celestial bodies is a challenging problem. Diffculties to model the gravity field of these bodies arise from the poor knowledge of the exact shape as observed from the Earth. In order to understand the complex dynamical environment in the vicinity of irregular asteroids, several ...
Santos, L. B.T. +5 more
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The Dynamical Evolution of the Asteroid Belt [PDF]
Asteroids IV, 2015 Accepted for publication in Asteroid ...
Morbidelli, Alessandro +4 more
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