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All asteroids are currently classified as either family, originating from the disruption of known bodies, or non-family. An outstanding question is the origin of these non-family asteroids. Were they formed individually, or as members of…

Earth and Planetary Astrophysics · Physics 2020-10-27 Stanley F. Dermott , Apostolos A. Christou , Dan Li , Thomas J. J. Kehoe , J. Malcolm Robinson

Context. A region at the inner edge of the main asteroid belt is populated by the Hungaria asteroids. Among these objects, the Hungaria family is formed as the result of a catastrophic disruption of (434) Hungaria asteroid hundred million…

Earth and Planetary Astrophysics · Physics 2022-01-26 E. Forgács-Dajka , Zs. Sándor , J. Sztakovics

We model the long-term evolution of the Hilda collisional family located in the 3/2 mean-motion resonance with Jupiter. Its eccentricity distribution evolves mostly due to the Yarkovsky/YORP effect and assuming that: (i) impact disruption…

Earth and Planetary Astrophysics · Physics 2011-09-07 M. Brož , D. Vokrouhlický , A. Morbidelli , D. Nesvorný , W. F. Bottke

More than a half of asteroids in the main belt have irregular shapes with the ratios of the minor to major axis lengths less than 0.6. One of the mechanisms to create such shapes is collisions between asteroids. The relationship between…

Earth and Planetary Astrophysics · Physics 2018-12-12 Keisuke Sugiura , Hiroshi Kobayashi , Shu-ichiro Inutsuka

Asteroid families with ages younger than $1$ Myr offer an interesting possibility of studying the outcomes of asteroid disruptions that are little modified by subsequent evolutionary processes. We analyze a very young asteroid family…

Earth and Planetary Astrophysics · Physics 2021-10-13 David Vokrouhlický , Miroslav Brož , Bojan Novaković , David Nesvorný

We study K-type asteroids in the broad surroundings of the Eos family because they seem to be intimately related, according to their colours measured by the Sloan Digital Sky Survey. Such `halos' of asteroid families have been rarely used…

Earth and Planetary Astrophysics · Physics 2013-03-08 Miroslav Brož , Alessandro Morbidelli

V-type asteroids are associated with basaltic composition, and are supposed to be fragments of crust of differentiated objects. Most V-type asteroids in the main belt are found in the inner main belt, and are either current members of the…

Earth and Planetary Astrophysics · Physics 2014-03-05 V. Carruba , M. E. Huaman , R. C. Domingos , C. R. Dos Santos , D. Souami

The Euphrosyne asteroid family occupies a unique zone in orbital element space around 3.15 au and may be an important source of the low-albedo near-Earth objects. The parent body of this family may have been one of the planetesimals that…

Earth and Planetary Astrophysics · Physics 2020-11-04 B. Yang , J. Hanus , M. Broz , O. Chrenko , M. Willman , P. Sevecek , J. Masiero , H. Kaluna

Asteroid families form as a result of large-scale collisions among main belt asteroids. The orbital distribution of fragments after a family-forming impact could inform us about their ejection velocities. Unfortunately, however, orbits…

Earth and Planetary Astrophysics · Physics 2016-02-16 Valerio Carruba , David Nesvorný

A statistical analysis of brightness variability of asteroids reveals how their shapes evolve from elongated to rough spheroidal forms, presumably driven by impact-related phenomena. Based on the Sloan Digital Sky Survey Moving Object…

Astrophysics · Physics 2009-11-13 Gyula M. Szabo , Laszlo L. Kiss

Ejection velocity fields of asteroid families are largely unconstrained due to the fact that members disperse relatively quickly on Myr time-scales by secular resonances and the Yarkovsky effect. The spreading of fragments in $a$ by the…

Earth and Planetary Astrophysics · Physics 2017-12-06 Bryce T. Bolin , Kevin J. Walsh , Alessandro Morbidelli , Marco Delbo

Eos family was created during a catastrophic impact about 1.3 Gyr ago. Rotation states of individual family members contain information about the history of the whole population. We aim to increase the number of asteroid shape models and…

Families of asteroids generated by the collisional fragmentation of a common parent body have been identified using clustering methods of asteroids in their proper orbital element space. An alternative method has been developed in order to…

The main belt, the region between the orbits of Mars and Jupiter, is home to more than 1 million asteroids. These asteroids form orbital groups, (i.e., asteroid families formed by collisions) and also spectral groups (taxonomies) with…

Earth and Planetary Astrophysics · Physics 2026-03-25 Michael Vávra , Miroslav Brož

An asteroid family forms as a result of a collision between an impactor and a parent body. The fragments with ejection speeds higher than the escape velocity from the parent body can escape its gravitational pull. The cloud of escaping…

Earth and Planetary Astrophysics · Physics 2016-02-16 Valerio Carruba , David Nesvorný , Safwan Aljbaae

An asteroid family is typically formed when a larger parent body undergoes a catastrophic collisional disruption, and as such family members are expected to show physical properties that closely trace the composition and mineralogical…

Earth and Planetary Astrophysics · Physics 2016-08-31 Joseph Masiero , Francesca DeMeo , Toshihiro Kasuga , Alex H. Parker

The Hilda population of asteroids is located in a large orbital zone of long-term stability associated with the Jupiter J3/2 mean motion resonance. They are a sister population of the Jupiter Trojans, since both of them are likely made up…

Earth and Planetary Astrophysics · Physics 2025-03-07 David Vokrouhlický , David Nesvorný , Miroslav Brož , William F. Bottke , Rogerio Deienno , Carson D. Fuls , Frank C. Shelly

We test the hypothesis that (3) Juno is a parent body of the H chondrites with dynamical modeling of an asteroid-family-forming impact and comparison to current observational data. Using a dynamical model that includes the Yarkovsky force…

Earth and Planetary Astrophysics · Physics 2023-10-30 John W. Noonan , Kathryn Volk , David Nesvorný , William F. Bottke

Asteroid families are groups of minor planets which have a common origin in catastrophic disruptions. Young asteroid families are very interesting because they represent the product of their parent body's fragmentation before orbital and…

Earth and Planetary Astrophysics · Physics 2016-06-28 Alexey Rosaev , Eva Plavalova

The two and three body mean motion resonances with Jupiter and Mars (and possible with Earth) may have significant effect on dynamics of very young close asteroids pairs and families. The most known example is influence 9:16 resonance with…

Earth and Planetary Astrophysics · Physics 2020-09-11 A. Rosaev , M. Galiazzo , E. Plávalová