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Asteroid families are formed as the result of collisions. Large fragments are ejected with speeds of the order of the escape velocity from the parent body. After the family formation, the fragments' orbits evolve in the space of proper…

Earth and Planetary Astrophysics · Physics 2018-04-03 V. Carruba , D. Vokrouhlický , B. Novakovic

The Oort cloud is usually thought of as a collection of icy comets inhabiting the outer reaches of the Solar system, but this picture is incomplete. We use simulations of the formation of the Oort cloud to show that ~4% of the small bodies…

Earth and Planetary Astrophysics · Physics 2015-06-23 Andrew Shannon , Alan P. Jackson , Dimitri Veras , Mark Wyatt

The population of known minor bodies in retrograde orbits ($i > 90 ^{\circ}$) that are classified as asteroids is still growing. The aim of our study was to estimate the dynamical lifetimes of these bodies by use of the latest observational…

Earth and Planetary Astrophysics · Physics 2017-03-07 Paweł Kankiewicz , Ireneusz Włodarczyk

Asteroids with companions constitute an excellent sample for studying the collisional and dynamical evolution of minor planets. The currently known binary population were discovered by different complementary techniques that produce, for…

The discovery that many trans-neptunian objects exist in pairs, or binaries, is proving invaluable for shedding light on the formation, evolution and structure of the outer Solar system. Based on recent systematic searches it has been…

Astrophysics · Physics 2007-05-23 Sergey A. Astakhov , Ernestine A. Lee , David Farrelly

Pulsar timing observations have revealed companions to neutron stars that include other neutron stars, white dwarfs, main-sequence stars, and planets. We demonstrate that the correlated and apparently stochastic residual times of arrival…

Satellites of asteroids have been discovered in nearly every known small body population, and a remarkable aspect of the known satellites is the diversity of their properties. They tell a story of vast differences in formation and evolution…

Earth and Planetary Astrophysics · Physics 2016-08-31 Kevin J. Walsh , Seth A. Jacobson

No less than 15% of large (diameter greater than 140 km) asteroids have satellites. The commonly accepted mechanism for their formation is post-impact reaccumulation. However, the detailed physical and dynamical properties of these systems…

Asteroid pairs, two objects that are not gravitationally bound to one another, but share a common origin, have been discovered in the Main belt and Hungaria populations. Such pairs are of major interest, as the study of their evolution…

Earth and Planetary Astrophysics · Physics 2020-10-14 Timothy R. Holt , David Vokrouhlický , David Nesvorný , Miroslav Brož , Jonathan Horner

Most main-belt asteroids are primitive rock and metal bodies in orbit about the Sun between Mars and Jupiter. Disruption, through high velocity collisions or rotational spin-up, is believed to be the primary mechanism for the production and…

Earth and Planetary Astrophysics · Physics 2010-10-14 David Jewitt , Harold Weaver , Jessica Agarwal , Max Mutchler , Michal Drahus

Fifteen orbital clusters (associations) were identified among ~20000 near Earth asteroids (NEAs). All associations were found with a high statistical reliability using a single linkage cluster analysis algorithm and three orbital similarity…

Earth and Planetary Astrophysics · Physics 2020-03-25 Tadeusz J. Jopek

Many asteroids that make close encounters with terrestrial planets are in a binary configuration. Here we calculate the relevant encounter timescales and investigate the effects of encounters on a binary's mutual orbit. We use a combination…

Earth and Planetary Astrophysics · Physics 2015-06-03 Julia Fang , Jean-Luc Margot

The moniker rubble pile is typically applied to all solar system bodies with Diameter between 200m and 10km - where in this size range there is an abundance of evidence that nearly every object is bound primarily by self-gravity with…

Earth and Planetary Astrophysics · Physics 2018-10-04 Kevin J. Walsh

Context. Small binary asteroid systems and pairs are thought to form through fission induced by spin up via the Yarkovsky-O'Keefe-Radzievskii-Paddack (YORP) effect. This process is expected to depend on their structural strength, hence…

Earth and Planetary Astrophysics · Physics 2023-03-29 Kate Minker , Benoît Carry

The locations of the fully despun, double synchronous end states of tidal evolution are derived for spherical components. With the exception of nearly equal-mass binaries, binary asteroid systems are in the midst of lengthy tidal…

Earth and Planetary Astrophysics · Physics 2015-03-18 Patrick A. Taylor , Jean-Luc Margot

Extremely similar heliocentric orbital elements of the main-belt objects (458271) 2010 UM26 and 2010 RN221 make them the tightest known pair and promise its very young age. We analyzed the conditions of its origin and determined its age. We…

Earth and Planetary Astrophysics · Physics 2022-08-31 D. Vokrouhlický , P. Fatka. M. Micheli , P. Pravec , E. J. Christensen

The past decade has brought major improvements in large-scale asteroid discovery and characterization with over half a million known asteroids and over 100,000 with some measurement of physical characterization. This explosion of data has…

Earth and Planetary Astrophysics · Physics 2016-08-31 Francesca E. DeMeo , Conel M. O'D. Alexander , Kevin J. Walsh , Clark R. Chapman , Richard P. Binzel

The main asteroid belt lies between the orbits of Mars and Jupiter, but the region is not uniformly filled with asteroids. There are gaps, known as the Kirkwood gaps, in the asteroid distribution in distinct locations that are associated…

Earth and Planetary Astrophysics · Physics 2010-11-02 David A. Minton , Renu Malhotra

Gaia Data Release 2 includes observational data for 14,099 pre-selected asteroids. From the sparsely sampled G band photometry, we derive lower-limit lightcurve amplitudes for 11,665 main belt asteroids in order to provide constraints on…

Earth and Planetary Astrophysics · Physics 2018-09-12 Michael Mommert , Andrew McNeill , David E. Trilling , Nicholas Moskovitz , Marco Delbo'

Asteroid binaries found amongst the Near-Earth objects are believed to have formed from rotational fission. In this paper, we aim to study the dynamical evolution of asteroid systems the moment after fission. The initial condition is…

Earth and Planetary Astrophysics · Physics 2022-09-14 Alex Ho , Margrethe Wold , Mohammad Poursina , John T. Conway