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The study of asteroid families has provided tremendous insight into the forces that sculpted the main belt and continue to drive the collisional and dynamical evolution of asteroids. The identification of asteroid families within the NEO…

天体物理学 · 物理学 2009-11-11 Hai Fu , Robert Jedicke , Daniel D. Durda , Ronald Fevig , James V. Scotti

Numerical modeling has long suggested that gravitationally-bound (or so-called rubble-pile) near-Earth asteroids (NEAs) can be destroyed by tidal forces during close and slow encounters with terrestrial planets. However, tidal disruptions…

地球与行星天体物理 · 物理学 2024-01-09 Mikael Granvik , Kevin J. Walsh

We report on our search for genetically related asteroids amongst the near-Earth object (NEO) population - families of NEOs akin to the well known main belt asteroid families. We used the technique proposed by Fu et al. (2005) supplemented…

地球与行星天体物理 · 物理学 2012-07-05 Eva Schunova , Mikael Granvik , Robert Jedicke , Giovanni Gronchi , Richard Wainscoat , Shinsuke Abe

The study of small ($<$300 m) near-Earth objects (NEOs) is important because they are more closely related than larger objects to the precursors of meteorites that fall on Earth. Collisions of these bodies with Earth are also more frequent.…

Near Earth Objects (NEOs) are a transient population of small bodies with orbits near or in the terrestrial planet region. They represent a mid-stage in the dynamical cycle of asteroids and comets, which starts with their removal from the…

We estimate the total population of near-Earth objects (NEOs) in the Solar System, using an extensive, `Solar System to pixels' fake-asteroid simulation to debias detections of real NEOs by the ATLAS survey. Down to absolute magnitudes…

We extend the most recent orbital and absolute magnitude Near Earth Object (NEO) model (Granvik et al., 2018) to provide a statistical description of NEO geometric albedos. Our model is calibrated on NEOWISE albedo data for the NEO…

Among the near-Earth object (NEO) population there are comets and active asteroids which are sources of fragments that initially move together; in addition, some NEOs follow orbits temporarily trapped in a web of secular resonances. These…

地球与行星天体物理 · 物理学 2016-01-05 C. de la Fuente Marcos , R. de la Fuente Marcos

We have for the first time calculated the population characteristics of the Earth's irregular natural satellites (NES) that are temporarily captured from the near-Earth-object (NEO) population. The steady-state NES size-frequency and…

地球与行星天体物理 · 物理学 2011-12-19 Mikael Granvik , Jeremie Vaubaillon , Robert Jedicke

The catalog of km-sized near-Earth objects (NEOs) is nearly complete. Typical impact monitoring analyses search for possible impacts over the next 100 years and none of the km-sized objects represent an impact threat over that time…

地球与行星天体物理 · 物理学 2023-06-28 Oscar Fuentes-Muñoz , Daniel J. Scheeres , Davide Farnocchia , Ryan S. Park

During close approaches to planets or stars, the morphological and dynamical properties of rubble-pile small bodies can be modified, and some may catastrophically break up. This phenomenon is of particular interest for understanding the…

地球与行星天体物理 · 物理学 2020-08-26 Yun Zhang , Patrick Michel

Determining the size and orbital distribution of the population of near-Earth asteroids (NEAs) is the focus of intense research, with the most recent models converging to a population of approximately $1000$ NEAs larger than 1 km and up to…

地球与行星天体物理 · 物理学 2016-12-21 Pasquale Tricarico

Catalina Sky Survey (CSS) is a major survey of Near-Earth Objects (NEOs). In a recent work, we used CSS observations from 2005-2012 to develop a new population model of NEOs (NEOMOD). CSS's G96 telescope was upgraded in 2016 and detected…

This work studies the dynamical evolution of a possible meteor stream along the orbit of the P\v{r}\'{i}bram meteorite, which originated in the tidal disruption of the putative rubble-pile-like parent body during a close approach to the…

地球与行星天体物理 · 物理学 2015-03-19 Juraj Tóth , Peter Vereš , Leonard Kornoš

The known near-Earth object (NEO) population consists of over 32,000 objects, with a yearly discovery rate of over 3000 NEOs per year. An essential component of the next generation of NEO surveys is an understanding of the population of…

地球与行星天体物理 · 物理学 2023-11-01 Tommy Grav , Amy K. Mainzer , Joseph R. Masiero , Dar W. Dahlen , Tim Spahr , William F. Bottke , Frank J. Masci

The near-Earth object (NEO) population is a window into the original conditions of the protosolar nebula, and has the potential to provide a key pathway for the delivery of water and organics to the early Earth. In addition to delivering…

地球与行星天体物理 · 物理学 2018-08-01 S. Ieva , E. Dotto , E. Mazzotta Epifani , D. Perna , A. Rossi , M. A. Barucci , A. Di Paola , R. Speziali , M. Micheli , E. Perozzi , M. Lazzarin , I. Bertini

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…

地球与行星天体物理 · 物理学 2025-08-04 David Nesvorny , David Vokrouhlicky , Miroslav Broz , Fernando V. Roig

We report 491 new near-infrared spectroscopic measurements of 420 near-Earth objects (NEOs) collected on the NASA InfraRed Telescope Facility (IRTF) as part of the MIT-Hawaii NEO Spectroscopic Survey (MITHNEOS). These measurements were…

Large or even medium sized asteroids impacting the Earth can cause damage on a global scale. Existing and planned concepts for finding near-Earth objects (NEOs) with diameter of 140 m or larger would take ~15-20 years of observation to find…

地球与行星天体物理 · 物理学 2018-11-14 Michael Shao , Hanying Zhou , Slava G. Turyshev , Chengxing Zhai , Navtej Saini , Russell Trahan

Asteroids and comets are of strategic importance for science in an effort to understand the formation, evolution and composition of the Solar System. Near-Earth Objects (NEOs) are of particular interest because of their accessibility from…

动力系统 · 数学 2013-08-09 D. García Yárnoz , J. P. Sánchez , C. R. McInnes
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