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Young asteroid families are unique sources of information about fragmentation physics and the structure of their parent bodies, since their physical properties have not changed much since their birth. Families have different properties such…

Earth and Planetary Astrophysics · Physics 2017-06-01 Tomáš Henych , Keith A. Holsapple

Asteroid families are groups of minor planets that have a common origin in breakup events. The very young compact asteroid clusters are the natural laboratory to study resonance related chaotic and nonlinear dynamics. The present dynamical…

Earth and Planetary Astrophysics · Physics 2016-12-16 Alexey Rosaev , Eva Plavalova

We searched for young asteroid families -- those with ages t_age < 10 Myr and at least three members -- using the proper element catalog from Nesvorny et al. (2024). Our approach employed the Hierarchical Clustering Method (HCM) in a…

Earth and Planetary Astrophysics · Physics 2025-08-04 David Nesvorny , David Vokrouhlicky , Miroslav Broz , Fernando V. Roig

Here we show an example of a young asteroid cluster located in a dynamically stable region, which was produced by partial disruption of a primitive body about 30 km in size. We estimate its age to be only 1.9 +/- 0.3 Myr, thus its…

Earth and Planetary Astrophysics · Physics 2012-07-10 Bojan Novakovic , Aldo Dell'Oro , Alberto Cellino , Zoran Knezevic

A new family classification, based on a catalog of proper elements with $\sim 384,000$ numbered asteroids and on new methods is available. For the $45$ dynamical families with $>250$ members identified in this classification, we present an…

Earth and Planetary Astrophysics · Physics 2015-06-11 Federica Spoto , Andrea Milani , Zoran Knezevic

The problem of origin and age of asteroid families is studied very intensively. First of all youngest families are interesting due to possibility of the reconstruction their collisional history. But in oldest families present objects with…

Earth and Planetary Astrophysics · Physics 2015-09-16 Alexey Rosaev

The (778) Theobalda asteroid family attracted little attention so far, but our study shows that it is important in several aspects. In this paper we investigate the origin and evolution of Theobalda family. Firstly, we identify the family…

Earth and Planetary Astrophysics · Physics 2012-07-04 Bojan Novakovic

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 Nele group, formerly known as the Iannini family, is one of the youngest asteroid families in the main belt. Previously, it has been noted that the pericenter longitudes $\varpi$ and nodal longitudes $\Omega$ of its largest member…

Earth and Planetary Astrophysics · Physics 2018-04-04 V. Carruba , D. Vokrouhlický , D. , Nesvorný , S. Aljbaae

A specially interesting subgroup of asteroid families are young ones, i.e. those formed less than 10 Myrs ago. They have attracted a lot of attention since the first such family has been discovered in 2002. About 20 young families have been…

Earth and Planetary Astrophysics · Physics 2019-11-05 Bojan Novakovic , Viktor Radovic

We continue our investigation of the bulk properties of asteroid dynamical families identified using only asteroid proper elements (Milani et al. 2014) to provide plausible collisional interpretations. We focus on cratering families…

Earth and Planetary Astrophysics · Physics 2019-01-30 Andrea Milani , Zoran Knežević , Federica Spoto , Paolo Paolicchi

A collisional family is a collection of >km-size asteroid fragments produced by a large scale collision between asteroids. Here we cataloged 335 notable collisional families in the main asteroid belt. When possible, we estimated each…

Earth and Planetary Astrophysics · Physics 2026-02-25 David Nesvorny

The proper elements of asteroids are obtained from the instantaneous orbital elements by removing periodic oscillations produced by gravitational interactions with planets. They are unchanging in time, at least if chaotic dynamics and…

Earth and Planetary Astrophysics · Physics 2024-07-26 David Nesvorny , Fernando Roig , David Vokrouhlicky , Miroslav Broz

Asteroid families are groups of minor bodies produced by high-velocity collisions. After the initial dispersions of the parent bodies fragments, their orbits evolve because of several gravitational and non-gravitational effects,such as…

Earth and Planetary Astrophysics · Physics 2016-03-23 V. Carruba , D. Nesvorný , S. Aljbaae , R. C. Domingos , M. Huaman

Among asteroid families, the Astrid family is peculiar because of its unusual inclination distribution. Objects at $a\simeq$~2.764 au are quite dispersed in this orbital element, giving the family a "crab-like" appearance. Recent works…

Earth and Planetary Astrophysics · Physics 2016-07-27 V. Carruba

We report the discovery of a new asteroid family among the dark asteroids residing in the Phocaea region the Tamara family. We make use of available physical data to separate asteroids in the region according to their surface reflectance…

Earth and Planetary Astrophysics · Physics 2017-05-31 Bojan Novakovic , Georgios Tsirvoulis , Mikael Granvik , Ana Todovic

The dynamical and physical properties of asteroid family members are widely used to reconstruct the collisional evolution of the main belt and of individual objects. Families offer insights into the properties of the parent bodies and the…

Earth and Planetary Astrophysics · Physics 2026-04-01 Roberto Balossi , Paolo Tanga , Aldo Dell'Oro

We use our home catalog of the asteroid proper elements to study the Karin family. The hierarchical clustering method provides formal identification with 3,863 members, but this set also includes objects from the neighboring Koronis2 and…

Earth and Planetary Astrophysics · Physics 2026-02-13 David Vokrouhlický , David Nesvorný , William F. Bottke

Collisions are one of the key processes shaping planetary systems. Asteroid families are outcomes of such collisions still identifiable across our solar system. The families provide a unique view of catastrophic disruption phenomena and…

Earth and Planetary Astrophysics · Physics 2022-07-25 Bojan Novakovic , David Vokrouhlicky , Federica Spoto , David Nesvorny

In this work we report the discovery of a young cluster of asteroids that originated by the breakup of an asteroid member of the (221)Eos family. By applying the Hierarchical clustering method to the catalog of proper elements we have…

Earth and Planetary Astrophysics · Physics 2018-10-26 Georgios Tsirvoulis
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