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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

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

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 Rafita asteroid family is an S-type group located in the middle main belt, on the right side of the 3J:-1A mean-motion resonance. The proximity of this resonance to the family left side in semi-major axis caused many former family…

Space Physics · Physics 2017-05-24 S. Aljbaae , V. Carruba , J. R. Masiero , R. C. Domingos , M. Huaman

The Hoffmeister family is a C-type group located in the central main belt. Dynamically, it is important because of its interaction with the ${\nu}_{1C}$ nodal secular resonance with Ceres, that significantly increases the dispersion in…

Earth and Planetary Astrophysics · Physics 2017-01-11 V. Carruba , B. Novakovic , S. Aljbaae

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 the largest objects in the main belt, asteroid 4 Vesta is unique in showing a basaltic crust. It is also the biggest member of the Vesta family, which is supposed to originate from a large cratering event about 1 Gyr ago (Marzari et…

The Nysa-Polana complex is a group of low-inclination asteroid families in the inner main belt, bounded in semimajor axis by the Mars-crossing region and the Jupiter 3:1 mean-motion resonance. This group is important as the most likely…

Earth and Planetary Astrophysics · Physics 2015-06-23 Melissa Dykhuis , Richard Greenberg

The recent discovery of the first V-type asteroid in the middle belt, (21238) 1995WV7, located at ~2.54 AU, raises the question of whether it came from (4) Vesta or not. In this paper, we present spectroscopic observations indicating the…

Astrophysics · Physics 2009-11-13 F. Roig , D. Nesvorny , R. Gil-Hutton , D. Lazzaro

To examine the distribution of rotational rates for chips of asteroid 4 Vesta, lightcurve observation of seven V-type asteroids (2511 Patterson, 2640 Hallstorm, 2653 Principia, 2795 Lapage, 3307 Athabasca, 4147 Lennon, and 4977 Rauthgundis)…

We use observations from the Catalina Sky Survey (CSS) to determine the bias-corrected population of small members in four very young families down to sizes equivalent to several hundred meters. Using the most recent catalog of known…

Earth and Planetary Astrophysics · Physics 2023-10-30 David Vokrouhlický , David Nesvorný , Miroslav Brož , William F. Bottke

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

Here we present the analysis of the distribution of rotation periods and light curve amplitudes based on 2859 family asteroids in 16 Main Belt families based on 9912 TESS asteroid light curves in the TSSYS-DR1 asteroid light curve database.…

We numerically estimate the semi-major axis chaotic diffusion of the Vesta family asteroids induced by close encounters with 11 massive main belt asteroids : (1) Ceres, (2) Pallas, (3) Juno, (4) Vesta, (7) Iris, (10) Hygiea, (15) Eunomia,…

Earth and Planetary Astrophysics · Physics 2015-05-30 J. -B. Delisle , J. Laskar

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

Asteroids residing in the first-order mean motion resonances with Jupiter hold important information about the processes that set the final architecture of giant planets. Here we revise current populations of objects in the J2/1 (Hecuba-gap…

Earth and Planetary Astrophysics · Physics 2011-04-21 Miroslav Brož , David Vokrouhlický

There are only a few known main belt (MB) asteroid families with ages greater than 2 Gyr (Bro\v{z} et al. 2013, Spoto et al. 2015). Estimates based on the family producing collision rate suggest that the lack of >2 Gyr-old families may be…

Earth and Planetary Astrophysics · Physics 2016-11-15 Bryce T. Bolin , Marco Delbo , Alessandro Morbidelli , Kevin J. Walsh

The distribution of asteroid sizes by semimajor axes and the distribution of the number of asteroids by albedo values for separate families are used to selection the asteroid families more clearly. An analysis of the families identified by…

Earth and Planetary Astrophysics · Physics 2016-02-10 A. M. Kazantsev , L. V. Kazantseva

A determination of the dynamical evolution of the asteroid belt is difficult because the asteroid belt has evolved since the time of asteroid formation through mechanisms that include: (1) catastrophic collisions, (2) rotational disruption,…

Earth and Planetary Astrophysics · Physics 2021-05-26 Stanley F. Dermott , Dan Li , Apostolos A. Christou , Thomas J. J. Kehoe , Carl D. Murray , J. Malcolm Robinson

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
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