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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

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

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

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

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

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 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

Following the break up of a parent body, the Yarkovsky effect causes asteroid family members to spread in orbital semimajor axis with a rate often inversely proportional to their diameter. This size dependent semimajor axis drift causes…

Earth and Planetary Astrophysics · Physics 2020-12-16 Rogerio Deienno , Kevin J. Walsh , Marco Delbo

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

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

The dynamical evolution of Classical Kuiper Belt Objects (CKBOs) divides into two parts, according to the secular theory of test particle orbits. The first part is a forced oscillation driven by the planets, while the second part is a free…

Astrophysics · Physics 2009-11-07 E. I. Chiang

Rotation period clustering in prograde/retrograde rotators might indicate the preliminary indication of the Slivan state in the Koronis family as a result of the YORP effect. We follow the general scenario of dispersion in semimajor axis of…

Earth and Planetary Astrophysics · Physics 2016-01-14 Chan-Kao Chang , Hsing-Wen Lin , Wing-Huen Ip

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

Any population of asteroids, like asteroid families, will disperse in semi-major axis due to the Yarkovsky effect. The amount of drift is modulated by the asteroid spin state evolution which determines the balance between the diurnal and…

Earth and Planetary Astrophysics · Physics 2020-09-02 Francesco Marzari , Alessandro Rossi , Oleksiy Golubov , Daniel Scheeres

We have performed detailed dynamical modeling of the structure of a faint dust band observed in coadded IRAS data at an ecliptic latitude of 17$^{\circ}$ that convincingly demonstrates that it is the result of a relatively recent…

Earth and Planetary Astrophysics · Physics 2015-10-07 A. J. Espy Kehoe , T. J. J. Kehoe , J. E. Colwell , S. F. Dermott

Based on a linearized model of the Yarkovsky effect, we investigate in this paper the dependence of the semimajor axis drift $\Delta a$ of a celestial body on its size, spinning obliquity, initial orbit and thermal parameters on its…

Earth and Planetary Astrophysics · Physics 2020-02-11 Yang-Bo Xu , Li-Yong Zhou , Christoph Lhotka , Wing-Huen Ip

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

Many asteroids in the main belt are continuously pushed by Yarkovsky effect into regions of different mean motion resonances (MMRs) and then ejected out. They are considered as the principal source of near-Earth objects. We investigate in…

Earth and Planetary Astrophysics · Physics 2020-05-06 Yang-Bo Xu , Li-Yong Zhou , Wing-Huen Ip

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

The age of a young asteroid family can be determined by tracking the orbits of family members backward in time and showing that they converge at some time in the past. Here we consider the Veritas family. We find that the membership of the…

Earth and Planetary Astrophysics · Physics 2017-06-28 Valerio Carruba , David Vokrouhlický , David Nesvorný
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