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200 papers

We present the results of our search for a dynamical family around the active asteroid P/2012F5 (Gibbs). By applying the hierarchical clustering method, we discover an extremely compact 9-body cluster associated with P/2012F5. The…

Earth and Planetary Astrophysics · Physics 2014-01-14 Bojan Novakovic , Henry H. Hsieh , Alberto Cellino , Marco Micheli , Marco Pedani

In their study Bottke et al. (2007) suggest that a member of the Baptistina asteroid family was the probable source of the K/T impactor which ended the reign of the Dinosaurs 65 Myr ago. Knowledge of the physical and material properties…

We report on the discovery of new Martian Trojans within the Minor Planet Center list of asteroids. Their orbital evolution over 10^8 yr shows characteristic signatures of dynamical longevity (Scholl et al, 2005) while their average orbits…

Earth and Planetary Astrophysics · Physics 2015-06-15 Apostolos A. Christou

We have used numerical routines to model the evolution of a simulated Baptistina family to constrain its age in light of new measurements of the diameters and albedos of family members from the Wide-field Infrared Survey Explorer. We also…

Earth and Planetary Astrophysics · Physics 2015-06-11 Joseph R. Masiero , A. K. Mainzer , T. Grav , J. M. Bauer , R. Jedicke

Recently, the first collisional family was identified in the trans-Neptunian belt. The family consists of Haumea and at least ten other ~100km-sized trans-Neptunian objects (TNOs) located in the region a = 42 - 44.5 AU. In this work, we…

Earth and Planetary Astrophysics · Physics 2012-12-27 Patryk Sofia Lykawka , Jonathan Horner , Tadashi Mukai , Akiko M. Nakamura

We present the first search for spinning dust emission from a sample of 34 Galactic cold cores, performed using the CARMA interferometer. For each of our cores we use photometric data from the Herschel Space Observatory to constrain N_{H},…

New insights into the history of the inner solar system are derived from the impact cratering record of the Moon, Mars, Venus and Mercury, and from the size distributions of asteroid populations. Old craters from a unique period of heavy…

Astrophysics · Physics 2009-11-13 Robert G. Strom , Renu Malhotra , Takashi Ito , Fumi Yoshida , David A. Kring

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

Current amount of ~500 asteroid models derived from the disk-integrated photometry by the lightcurve inversion method allows us to study not only the spin-vector properties of the whole population of MBAs, but also of several individual…

Earth and Planetary Astrophysics · Physics 2015-06-17 J. Hanuš , M. Brož , J. Ďurech , B. D. Warner , J. Brinsfield , R. Durkee , D. Higgins , R. A. Koff , J. Oey , F. Pilcher , R. Stephens , L. P. Strabla , Q. Ulisse , R. Girelli

V-type asteroids are a taxonomic class whose surface is associated to a basaltic composition. The only known source of V-type asteroids in the Main Asteroid Belt is (4) Vesta, that is located in the inner part of the belt. However, many…

Earth and Planetary Astrophysics · Physics 2017-03-03 Pedro Brasil , Fernando Roig , David Nesvorný , Valerio Carruba

V-type asteroids, characterized by two absorption bands at 1.0 and 2.0 $\mu m$, are usually thought to be portions of the crust of differentiated or partially differentiated bodies. Most V-type asteroids are found in the inner main belt and…

Earth and Planetary Astrophysics · Physics 2015-06-22 Mariela E. Huaman , Valerio Carruba , Rita Cassia Domingos

Satellites around large asteroids are preferentially found among those with the most rapid rotation and elongated shape. The taxonomic statistics are similarly skewed; in total, 13 asteroids larger than 100 km are known to have satellites,…

Earth and Planetary Astrophysics · Physics 2025-05-07 Kevin J. Walsh , Ronald-Louis Ballouz , Harrison F. Agrusa , Josef Hanus , Martin Jutzi , Patrick Michel

Most meteorites are fragments from recent collisions experienced in the asteroid belt. In such a hyper-velocity collision, the smaller collision partner is destroyed, whereas a crater on the asteroid is formed or it is entirely disrupted,…

Earth and Planetary Astrophysics · Physics 2016-06-15 Eike Beitz , Jürgen Blum , M. Gabriela Parisi , Josep M. Trigo-Rodríguez

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

Quantifying the accuracy with which physical properties of asteroids can be determined from thermal modeling is critical to measuring the impact of infrared data on our understanding of asteroids. Previous work (Mainzer et al. 2011b) has…

Earth and Planetary Astrophysics · Physics 2018-08-08 Joseph R. Masiero , A. K. Mainzer , E. L. Wright

A dynamical model for large near-Earth asteroids (NEAs) is developed here to understand the occurrence rate and nature of Cretaceous-Paleogene (K/Pg) scale impacts on the Earth. We find that 16--32 (2--4) impacts of diameter $D>5$ km…

Earth and Planetary Astrophysics · Physics 2021-07-09 David Nesvorny , William F. Bottke , Simone Marchi

The Mars crossing region constitutes a path to deliver asteroids from the Inner Main Belt to the Earth crossing space. While both the Inner Main Belt and the population of Earth crossing asteroids contains a significant fraction of…

Earth and Planetary Astrophysics · Physics 2015-06-16 A. O. Ribeiro , F. Roig , M. Cañada-Assandri , J. M. F. Carvano , F. L. Jasmin , A. Alvarez-Candal , R. Gil-Hutton

The so-called Nysa-Polana complex of asteroids is a diverse and widespread group. It appears to be two overlapping families of different asteroid taxonomies: (44) Nysa is an E-type asteroid with the lowest number in the midst of a…

Earth and Planetary Astrophysics · Physics 2013-05-14 Kevin J. Walsh , Marco Delbó , William F. Bottke , David Vokrouhlický , Dante S. Lauretta

Basaltic asteroids (V-types) are believed to be fragments of large differentiated bodies. The majority of them are found in the inner part of the asteroid belt, and are current or past members of the Vesta family. Recently, some V-type…

Earth and Planetary Astrophysics · Physics 2017-04-12 J. Licandro , M. Popescu , J. de Leon , D. Morate

We present a new classification of families identified among the population of high-inclination asteroids. We computed synthetic proper elements for a sample of 18,560 numbered and multi-opposition objects having sine of proper inclination…

Earth and Planetary Astrophysics · Physics 2012-07-04 Bojan Novakovic , Alberto Cellino , Zoran Knezevic